/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 14:32:03,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 14:32:03,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 14:32:03,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 14:32:03,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 14:32:03,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 14:32:03,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 14:32:03,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 14:32:03,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 14:32:03,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 14:32:03,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 14:32:03,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 14:32:03,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 14:32:03,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 14:32:03,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 14:32:03,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 14:32:03,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 14:32:03,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 14:32:03,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 14:32:03,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 14:32:03,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 14:32:03,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 14:32:03,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 14:32:03,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 14:32:03,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-17 14:32:03,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-17 14:32:03,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-17 14:32:03,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-17 14:32:03,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-17 14:32:03,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-17 14:32:03,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 14:32:03,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 14:32:03,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 14:32:03,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 14:32:03,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 14:32:03,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 14:32:03,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 14:32:03,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 14:32:03,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 14:32:03,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 14:32:03,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 14:32:03,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-09-17 14:32:03,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 14:32:03,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 14:32:03,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 14:32:03,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 14:32:03,990 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 14:32:03,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 14:32:03,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 14:32:03,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 14:32:03,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 14:32:03,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 14:32:03,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 14:32:03,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 14:32:03,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 14:32:03,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 14:32:03,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 14:32:03,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 14:32:03,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 14:32:03,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 14:32:03,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 14:32:03,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 14:32:03,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 14:32:03,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 14:32:03,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 14:32:03,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-17 14:32:03,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 14:32:03,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 14:32:03,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 14:32:03,996 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-17 14:32:03,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 14:32:04,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 14:32:04,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 14:32:04,503 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 14:32:04,505 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 14:32:04,505 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 14:32:04,507 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-09-17 14:32:04,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec28e113/3ccfa8affdae43fcb899df134e032ed8/FLAG2c4cdf22c [2020-09-17 14:32:05,266 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 14:32:05,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-09-17 14:32:05,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec28e113/3ccfa8affdae43fcb899df134e032ed8/FLAG2c4cdf22c [2020-09-17 14:32:05,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec28e113/3ccfa8affdae43fcb899df134e032ed8 [2020-09-17 14:32:05,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 14:32:05,631 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 14:32:05,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 14:32:05,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 14:32:05,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 14:32:05,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 02:32:05" (1/1) ... [2020-09-17 14:32:05,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a023d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:05, skipping insertion in model container [2020-09-17 14:32:05,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 02:32:05" (1/1) ... [2020-09-17 14:32:05,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 14:32:05,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 14:32:06,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 14:32:06,216 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 14:32:06,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 14:32:06,353 INFO L208 MainTranslator]: Completed translation [2020-09-17 14:32:06,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:06 WrapperNode [2020-09-17 14:32:06,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 14:32:06,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 14:32:06,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 14:32:06,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 14:32:06,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:06" (1/1) ... [2020-09-17 14:32:06,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:06" (1/1) ... [2020-09-17 14:32:06,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 14:32:06,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 14:32:06,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 14:32:06,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 14:32:06,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:06" (1/1) ... [2020-09-17 14:32:06,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:06" (1/1) ... [2020-09-17 14:32:06,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:06" (1/1) ... [2020-09-17 14:32:06,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:06" (1/1) ... [2020-09-17 14:32:06,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:06" (1/1) ... [2020-09-17 14:32:06,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:06" (1/1) ... [2020-09-17 14:32:06,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:06" (1/1) ... [2020-09-17 14:32:06,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 14:32:06,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 14:32:06,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 14:32:06,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 14:32:06,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 14:32:06,554 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-17 14:32:06,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-17 14:32:06,554 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-17 14:32:06,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-17 14:32:06,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 14:32:06,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 14:32:06,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 14:32:06,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 14:32:06,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 14:32:06,558 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 14:32:06,908 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 14:32:06,909 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-17 14:32:06,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 02:32:06 BoogieIcfgContainer [2020-09-17 14:32:06,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 14:32:06,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 14:32:06,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 14:32:06,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 14:32:06,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 02:32:05" (1/3) ... [2020-09-17 14:32:06,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d99cfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 02:32:06, skipping insertion in model container [2020-09-17 14:32:06,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:32:06" (2/3) ... [2020-09-17 14:32:06,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d99cfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 02:32:06, skipping insertion in model container [2020-09-17 14:32:06,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 02:32:06" (3/3) ... [2020-09-17 14:32:06,928 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-09-17 14:32:06,944 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 14:32:06,945 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-17 14:32:06,958 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 14:32:06,959 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 14:32:06,995 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:06,996 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:06,996 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:06,996 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:06,997 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:06,997 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:06,998 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:06,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:06,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:06,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:06,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,000 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,006 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,007 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,007 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,007 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,007 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,020 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,021 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,021 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,021 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,021 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:07,054 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 14:32:07,083 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:32:07,084 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:32:07,084 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:32:07,084 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 14:32:07,085 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:32:07,085 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:32:07,085 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:32:07,085 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:32:07,108 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-09-17 14:32:07,110 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-17 14:32:07,167 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-17 14:32:07,167 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 14:32:07,175 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-09-17 14:32:07,178 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-17 14:32:07,203 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-17 14:32:07,204 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 14:32:07,205 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-09-17 14:32:07,208 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 592 [2020-09-17 14:32:07,209 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:32:08,716 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-09-17 14:32:09,005 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-09-17 14:32:09,287 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-09-17 14:32:09,374 INFO L206 etLargeBlockEncoding]: Checked pairs total: 486 [2020-09-17 14:32:09,375 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-09-17 14:32:09,381 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-17 14:32:09,397 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-17 14:32:09,400 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-17 14:32:09,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 14:32:09,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:09,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 14:32:09,435 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:09,451 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-09-17 14:32:09,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:09,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258180067] [2020-09-17 14:32:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:09,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258180067] [2020-09-17 14:32:09,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:09,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 14:32:09,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576177846] [2020-09-17 14:32:09,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 14:32:09,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:09,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 14:32:09,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:09,740 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-17 14:32:09,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:09,787 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-17 14:32:09,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:32:09,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 14:32:09,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:09,804 INFO L225 Difference]: With dead ends: 35 [2020-09-17 14:32:09,804 INFO L226 Difference]: Without dead ends: 31 [2020-09-17 14:32:09,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:09,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-17 14:32:09,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-17 14:32:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-17 14:32:09,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-17 14:32:09,855 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-17 14:32:09,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:09,856 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-17 14:32:09,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 14:32:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-17 14:32:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-17 14:32:09,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:09,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:09,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 14:32:09,858 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:09,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:09,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-09-17 14:32:09,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:09,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639841417] [2020-09-17 14:32:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:09,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639841417] [2020-09-17 14:32:09,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:09,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 14:32:09,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89767523] [2020-09-17 14:32:09,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 14:32:09,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:09,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 14:32:09,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 14:32:09,970 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-17 14:32:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:09,998 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-17 14:32:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 14:32:09,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-17 14:32:09,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:10,000 INFO L225 Difference]: With dead ends: 26 [2020-09-17 14:32:10,000 INFO L226 Difference]: Without dead ends: 24 [2020-09-17 14:32:10,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 14:32:10,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-17 14:32:10,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-17 14:32:10,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-17 14:32:10,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-17 14:32:10,008 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-17 14:32:10,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:10,008 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-17 14:32:10,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 14:32:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-17 14:32:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 14:32:10,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:10,011 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:10,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 14:32:10,013 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:10,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:10,013 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-09-17 14:32:10,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:10,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483985404] [2020-09-17 14:32:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:32:10,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:32:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:32:10,109 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:32:10,141 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 14:32:10,141 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 14:32:10,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 14:32:10,142 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 14:32:10,143 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 14:32:10,144 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-17 14:32:10,154 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,154 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,154 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,154 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,155 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,155 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,155 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,156 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,156 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,158 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,158 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,159 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,159 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,159 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,161 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,161 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,161 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,161 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,161 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,162 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,162 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,162 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,163 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,164 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,165 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,166 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,166 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,166 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,166 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:10,174 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-17 14:32:10,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:32:10,174 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:32:10,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:32:10,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 14:32:10,175 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:32:10,175 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:32:10,175 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:32:10,175 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:32:10,178 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-09-17 14:32:10,178 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-17 14:32:10,198 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-17 14:32:10,199 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-17 14:32:10,200 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-09-17 14:32:10,204 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-17 14:32:10,236 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-17 14:32:10,236 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-17 14:32:10,239 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-09-17 14:32:10,244 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 920 [2020-09-17 14:32:10,245 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:32:11,687 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-09-17 14:32:11,942 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-17 14:32:12,111 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-17 14:32:12,119 INFO L206 etLargeBlockEncoding]: Checked pairs total: 942 [2020-09-17 14:32:12,119 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-17 14:32:12,119 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-17 14:32:12,132 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-17 14:32:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-17 14:32:12,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 14:32:12,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:12,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 14:32:12,134 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:12,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:12,134 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-09-17 14:32:12,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:12,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712037609] [2020-09-17 14:32:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:12,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712037609] [2020-09-17 14:32:12,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:12,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 14:32:12,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182036459] [2020-09-17 14:32:12,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 14:32:12,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:12,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 14:32:12,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:12,190 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-17 14:32:12,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:12,239 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-17 14:32:12,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:32:12,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 14:32:12,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:12,248 INFO L225 Difference]: With dead ends: 185 [2020-09-17 14:32:12,248 INFO L226 Difference]: Without dead ends: 171 [2020-09-17 14:32:12,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-17 14:32:12,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-17 14:32:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-17 14:32:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-17 14:32:12,283 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-17 14:32:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:12,283 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-17 14:32:12,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 14:32:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-17 14:32:12,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 14:32:12,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:12,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:12,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 14:32:12,285 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:12,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:12,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-09-17 14:32:12,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:12,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556091799] [2020-09-17 14:32:12,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:12,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556091799] [2020-09-17 14:32:12,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:12,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:12,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353149029] [2020-09-17 14:32:12,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:12,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:12,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:12,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:12,357 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-17 14:32:12,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:12,466 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-17 14:32:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:12,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 14:32:12,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:12,473 INFO L225 Difference]: With dead ends: 205 [2020-09-17 14:32:12,473 INFO L226 Difference]: Without dead ends: 201 [2020-09-17 14:32:12,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:12,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-17 14:32:12,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-17 14:32:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-17 14:32:12,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-17 14:32:12,494 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-17 14:32:12,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:12,494 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-17 14:32:12,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:12,495 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-17 14:32:12,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 14:32:12,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:12,496 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:12,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 14:32:12,497 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:12,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:12,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-09-17 14:32:12,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:12,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050506934] [2020-09-17 14:32:12,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:12,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050506934] [2020-09-17 14:32:12,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:12,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:12,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395160042] [2020-09-17 14:32:12,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:12,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:12,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:12,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:12,593 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-17 14:32:12,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:12,715 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-17 14:32:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:12,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 14:32:12,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:12,718 INFO L225 Difference]: With dead ends: 189 [2020-09-17 14:32:12,719 INFO L226 Difference]: Without dead ends: 185 [2020-09-17 14:32:12,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:12,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-17 14:32:12,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-17 14:32:12,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-17 14:32:12,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-17 14:32:12,734 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-17 14:32:12,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:12,736 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-17 14:32:12,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:12,736 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-17 14:32:12,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 14:32:12,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:12,737 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:12,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 14:32:12,738 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:12,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:12,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-09-17 14:32:12,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:12,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701116133] [2020-09-17 14:32:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:32:12,786 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:32:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:32:12,817 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:32:12,827 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 14:32:12,827 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 14:32:12,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 14:32:12,828 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 14:32:12,828 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 14:32:12,830 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-17 14:32:12,841 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,841 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,842 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,842 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,842 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,842 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,843 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,843 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,843 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,843 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,843 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,844 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,844 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,844 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,844 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,845 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,846 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,846 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,849 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,849 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,850 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,850 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,850 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,850 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,851 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,852 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,852 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,853 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,854 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,854 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,857 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,857 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,857 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,857 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,857 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,859 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,859 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,859 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,860 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,860 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,862 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,862 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,863 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,865 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,865 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,866 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,866 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,866 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,866 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,869 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,869 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,870 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,870 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,870 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,870 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:12,873 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-17 14:32:12,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:32:12,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:32:12,873 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:32:12,873 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 14:32:12,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:32:12,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:32:12,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:32:12,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:32:12,876 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-09-17 14:32:12,876 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-17 14:32:12,896 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-17 14:32:12,897 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-17 14:32:12,898 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-09-17 14:32:12,901 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-17 14:32:12,923 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-17 14:32:12,923 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-17 14:32:12,924 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-09-17 14:32:12,927 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1308 [2020-09-17 14:32:12,928 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:32:14,483 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-09-17 14:32:14,780 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-17 14:32:14,954 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-17 14:32:14,962 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1426 [2020-09-17 14:32:14,963 INFO L214 etLargeBlockEncoding]: Total number of compositions: 74 [2020-09-17 14:32:14,963 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-17 14:32:14,993 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-17 14:32:14,994 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-17 14:32:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 14:32:14,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:14,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 14:32:14,995 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:14,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:14,995 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-09-17 14:32:14,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:14,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024806720] [2020-09-17 14:32:14,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:15,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024806720] [2020-09-17 14:32:15,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:15,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 14:32:15,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233136264] [2020-09-17 14:32:15,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 14:32:15,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:15,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 14:32:15,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:15,045 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-17 14:32:15,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:15,082 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-17 14:32:15,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:32:15,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 14:32:15,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:15,089 INFO L225 Difference]: With dead ends: 600 [2020-09-17 14:32:15,090 INFO L226 Difference]: Without dead ends: 559 [2020-09-17 14:32:15,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:15,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-17 14:32:15,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-17 14:32:15,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-17 14:32:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-17 14:32:15,142 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-17 14:32:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:15,145 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-17 14:32:15,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 14:32:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-17 14:32:15,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 14:32:15,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:15,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:15,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 14:32:15,149 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:15,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:15,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-09-17 14:32:15,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:15,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435572659] [2020-09-17 14:32:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:15,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435572659] [2020-09-17 14:32:15,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:15,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:15,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538847797] [2020-09-17 14:32:15,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:15,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:15,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:15,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:15,244 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-17 14:32:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:15,388 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-17 14:32:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:15,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 14:32:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:15,399 INFO L225 Difference]: With dead ends: 817 [2020-09-17 14:32:15,399 INFO L226 Difference]: Without dead ends: 812 [2020-09-17 14:32:15,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:15,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-17 14:32:15,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-17 14:32:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-17 14:32:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-17 14:32:15,431 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-17 14:32:15,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:15,432 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-17 14:32:15,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:15,432 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-17 14:32:15,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 14:32:15,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:15,434 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:15,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 14:32:15,434 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:15,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:15,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-09-17 14:32:15,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:15,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404698413] [2020-09-17 14:32:15,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:15,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404698413] [2020-09-17 14:32:15,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:15,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:15,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169474602] [2020-09-17 14:32:15,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:15,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:15,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:15,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:15,513 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-17 14:32:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:15,627 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-17 14:32:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:15,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 14:32:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:15,635 INFO L225 Difference]: With dead ends: 843 [2020-09-17 14:32:15,635 INFO L226 Difference]: Without dead ends: 836 [2020-09-17 14:32:15,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:15,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-17 14:32:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-17 14:32:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-17 14:32:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-17 14:32:15,668 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-17 14:32:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:15,669 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-17 14:32:15,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:15,669 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-17 14:32:15,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:32:15,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:15,671 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:15,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-17 14:32:15,671 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:15,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-09-17 14:32:15,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:15,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796321219] [2020-09-17 14:32:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:15,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796321219] [2020-09-17 14:32:15,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636420590] [2020-09-17 14:32:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:15,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:15,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:15,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:15,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:15,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879579644] [2020-09-17 14:32:15,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:15,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:15,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:15,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:15,982 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-09-17 14:32:16,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:16,285 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-17 14:32:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:16,287 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 14:32:16,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:16,304 INFO L225 Difference]: With dead ends: 1059 [2020-09-17 14:32:16,304 INFO L226 Difference]: Without dead ends: 1052 [2020-09-17 14:32:16,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:32:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-17 14:32:16,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-17 14:32:16,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-17 14:32:16,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-17 14:32:16,340 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-17 14:32:16,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:16,340 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-17 14:32:16,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:16,340 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-17 14:32:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:32:16,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:16,344 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:16,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-17 14:32:16,560 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:16,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:16,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-09-17 14:32:16,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:16,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815156542] [2020-09-17 14:32:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:16,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815156542] [2020-09-17 14:32:16,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:16,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:16,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627984828] [2020-09-17 14:32:16,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:16,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:16,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:16,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:16,649 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-17 14:32:16,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:16,946 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-17 14:32:16,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:16,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 14:32:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:16,955 INFO L225 Difference]: With dead ends: 1053 [2020-09-17 14:32:16,955 INFO L226 Difference]: Without dead ends: 1045 [2020-09-17 14:32:16,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:32:16,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-17 14:32:16,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-17 14:32:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-17 14:32:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-17 14:32:16,981 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-17 14:32:16,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:16,981 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-17 14:32:16,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-17 14:32:16,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 14:32:16,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:16,983 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:16,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-17 14:32:16,983 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:16,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:16,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-09-17 14:32:16,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:16,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286952322] [2020-09-17 14:32:16,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:17,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286952322] [2020-09-17 14:32:17,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:17,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:17,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803729698] [2020-09-17 14:32:17,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:17,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:17,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:17,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:17,082 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-17 14:32:17,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:17,173 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-17 14:32:17,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:17,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 14:32:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:17,180 INFO L225 Difference]: With dead ends: 736 [2020-09-17 14:32:17,181 INFO L226 Difference]: Without dead ends: 728 [2020-09-17 14:32:17,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:17,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-17 14:32:17,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-17 14:32:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-17 14:32:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-17 14:32:17,203 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-17 14:32:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:17,203 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-17 14:32:17,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-17 14:32:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-17 14:32:17,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:17,204 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:17,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-17 14:32:17,205 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:17,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:17,205 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-09-17 14:32:17,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:17,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631279115] [2020-09-17 14:32:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:32:17,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:32:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:32:17,236 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:32:17,243 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 14:32:17,244 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 14:32:17,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-17 14:32:17,244 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 14:32:17,245 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 14:32:17,245 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-17 14:32:17,259 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,259 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,259 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,260 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,260 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,260 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,260 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,260 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,261 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,261 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,261 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,261 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,261 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,261 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,262 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,262 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,262 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,262 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,262 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,262 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,263 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,263 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,263 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,263 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,263 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,263 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,264 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,264 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,268 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,268 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,269 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,269 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,269 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,270 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,275 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,275 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,275 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,276 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,276 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,279 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,279 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,279 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,280 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,280 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,281 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,285 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:17,291 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-17 14:32:17,291 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:32:17,292 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:32:17,292 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:32:17,292 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 14:32:17,292 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:32:17,292 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:32:17,292 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:32:17,292 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:32:17,294 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-09-17 14:32:17,294 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-17 14:32:17,313 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-17 14:32:17,314 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-17 14:32:17,315 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-09-17 14:32:17,318 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-17 14:32:17,335 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-17 14:32:17,336 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-17 14:32:17,337 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-09-17 14:32:17,340 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1756 [2020-09-17 14:32:17,340 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:32:19,126 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-17 14:32:19,233 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-17 14:32:19,485 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-17 14:32:19,692 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-17 14:32:19,796 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2033 [2020-09-17 14:32:19,797 INFO L214 etLargeBlockEncoding]: Total number of compositions: 86 [2020-09-17 14:32:19,797 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-17 14:32:19,907 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-17 14:32:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-17 14:32:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 14:32:19,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:19,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 14:32:19,909 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:19,909 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-09-17 14:32:19,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:19,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744261433] [2020-09-17 14:32:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:19,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744261433] [2020-09-17 14:32:19,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:19,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 14:32:19,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127377709] [2020-09-17 14:32:19,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 14:32:19,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:19,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 14:32:19,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:19,937 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-17 14:32:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:19,998 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-17 14:32:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:32:19,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 14:32:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:20,016 INFO L225 Difference]: With dead ends: 1889 [2020-09-17 14:32:20,016 INFO L226 Difference]: Without dead ends: 1767 [2020-09-17 14:32:20,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:20,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-17 14:32:20,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-17 14:32:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-17 14:32:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-17 14:32:20,101 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-17 14:32:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:20,101 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-17 14:32:20,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 14:32:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-17 14:32:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 14:32:20,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:20,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:20,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-17 14:32:20,103 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:20,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:20,103 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-09-17 14:32:20,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:20,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258385154] [2020-09-17 14:32:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:20,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258385154] [2020-09-17 14:32:20,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:20,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:20,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794780342] [2020-09-17 14:32:20,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:20,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:20,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:20,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:20,173 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-17 14:32:20,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:20,292 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-17 14:32:20,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:20,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 14:32:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:20,318 INFO L225 Difference]: With dead ends: 2905 [2020-09-17 14:32:20,318 INFO L226 Difference]: Without dead ends: 2899 [2020-09-17 14:32:20,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-17 14:32:20,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-17 14:32:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-17 14:32:20,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-17 14:32:20,437 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-17 14:32:20,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:20,437 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-17 14:32:20,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:20,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-17 14:32:20,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 14:32:20,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:20,438 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:20,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-17 14:32:20,439 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:20,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:20,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-09-17 14:32:20,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:20,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945632991] [2020-09-17 14:32:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:20,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945632991] [2020-09-17 14:32:20,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:20,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:20,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025648045] [2020-09-17 14:32:20,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:20,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:20,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:20,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:20,518 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-17 14:32:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:20,717 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-17 14:32:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:20,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 14:32:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:20,745 INFO L225 Difference]: With dead ends: 3204 [2020-09-17 14:32:20,745 INFO L226 Difference]: Without dead ends: 3194 [2020-09-17 14:32:20,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-17 14:32:20,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-17 14:32:20,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-17 14:32:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-17 14:32:20,855 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-17 14:32:20,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:20,857 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-17 14:32:20,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-17 14:32:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:32:20,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:20,859 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:20,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-17 14:32:20,859 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:20,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-09-17 14:32:20,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:20,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713723191] [2020-09-17 14:32:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:20,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713723191] [2020-09-17 14:32:20,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525891053] [2020-09-17 14:32:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:21,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:21,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:21,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:21,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:21,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378009844] [2020-09-17 14:32:21,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:21,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:21,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:21,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:21,136 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-09-17 14:32:21,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:21,488 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-17 14:32:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:21,488 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 14:32:21,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:21,534 INFO L225 Difference]: With dead ends: 4556 [2020-09-17 14:32:21,534 INFO L226 Difference]: Without dead ends: 4546 [2020-09-17 14:32:21,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:32:21,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-17 14:32:21,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-17 14:32:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-17 14:32:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-17 14:32:21,656 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-17 14:32:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:21,656 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-17 14:32:21,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-17 14:32:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:32:21,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:21,658 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:21,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-17 14:32:21,872 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:21,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:21,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-09-17 14:32:21,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:21,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227496232] [2020-09-17 14:32:21,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:21,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:21,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227496232] [2020-09-17 14:32:21,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:21,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:21,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633157153] [2020-09-17 14:32:21,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:21,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:21,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:21,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:21,949 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-17 14:32:22,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:22,336 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-17 14:32:22,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:22,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 14:32:22,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:22,355 INFO L225 Difference]: With dead ends: 4612 [2020-09-17 14:32:22,356 INFO L226 Difference]: Without dead ends: 4601 [2020-09-17 14:32:22,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:32:22,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-17 14:32:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-17 14:32:22,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-17 14:32:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-17 14:32:22,469 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-17 14:32:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:22,469 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-17 14:32:22,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:22,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-17 14:32:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 14:32:22,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:22,471 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:22,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-17 14:32:22,471 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:22,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:22,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-09-17 14:32:22,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:22,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026384176] [2020-09-17 14:32:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:22,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026384176] [2020-09-17 14:32:22,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:22,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:22,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231427639] [2020-09-17 14:32:22,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:22,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:22,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:22,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:22,558 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-17 14:32:22,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:22,682 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-17 14:32:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:22,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 14:32:22,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:22,698 INFO L225 Difference]: With dead ends: 3265 [2020-09-17 14:32:22,699 INFO L226 Difference]: Without dead ends: 3250 [2020-09-17 14:32:22,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-17 14:32:22,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-17 14:32:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-17 14:32:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-17 14:32:22,794 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-17 14:32:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:22,794 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-17 14:32:22,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:22,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-17 14:32:22,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:22,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:22,796 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:22,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-17 14:32:22,796 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:22,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:22,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-09-17 14:32:22,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:22,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607020047] [2020-09-17 14:32:22,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:32:22,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607020047] [2020-09-17 14:32:22,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051310461] [2020-09-17 14:32:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:23,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:23,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:32:23,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:23,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:23,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728865374] [2020-09-17 14:32:23,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:23,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:23,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:23,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:23,089 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-09-17 14:32:23,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:23,525 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-17 14:32:23,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:23,525 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 14:32:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:23,546 INFO L225 Difference]: With dead ends: 4825 [2020-09-17 14:32:23,546 INFO L226 Difference]: Without dead ends: 4813 [2020-09-17 14:32:23,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:32:23,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-17 14:32:23,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-17 14:32:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-17 14:32:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-17 14:32:23,734 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-17 14:32:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:23,734 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-17 14:32:23,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:23,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-17 14:32:23,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:23,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:23,736 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:23,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:23,949 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:23,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:23,950 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-09-17 14:32:23,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:23,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041731799] [2020-09-17 14:32:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:24,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041731799] [2020-09-17 14:32:24,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306863512] [2020-09-17 14:32:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:24,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:24,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:24,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:24,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:24,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896018668] [2020-09-17 14:32:24,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:24,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:24,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:24,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:24,193 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-09-17 14:32:24,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:24,594 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-17 14:32:24,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:24,595 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 14:32:24,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:24,615 INFO L225 Difference]: With dead ends: 4942 [2020-09-17 14:32:24,616 INFO L226 Difference]: Without dead ends: 4925 [2020-09-17 14:32:24,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:32:24,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-17 14:32:24,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-17 14:32:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-17 14:32:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-17 14:32:24,739 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-17 14:32:24,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:24,740 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-17 14:32:24,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-17 14:32:24,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:24,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:24,742 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:24,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:24,958 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:24,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:24,958 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-09-17 14:32:24,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:24,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709491926] [2020-09-17 14:32:24,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:25,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709491926] [2020-09-17 14:32:25,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:25,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:25,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720435244] [2020-09-17 14:32:25,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:25,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:25,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:25,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:25,048 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-17 14:32:25,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:25,395 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-17 14:32:25,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:25,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 14:32:25,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:25,412 INFO L225 Difference]: With dead ends: 4934 [2020-09-17 14:32:25,412 INFO L226 Difference]: Without dead ends: 4917 [2020-09-17 14:32:25,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:32:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-17 14:32:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-17 14:32:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-17 14:32:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-17 14:32:25,529 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-17 14:32:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:25,529 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-17 14:32:25,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:25,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-17 14:32:25,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:25,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:25,531 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:25,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-17 14:32:25,532 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:25,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:25,532 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-09-17 14:32:25,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:25,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410253156] [2020-09-17 14:32:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:25,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410253156] [2020-09-17 14:32:25,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:25,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:25,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314692965] [2020-09-17 14:32:25,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:25,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:25,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:25,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:25,623 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-17 14:32:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:26,043 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-17 14:32:26,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:26,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 14:32:26,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:26,060 INFO L225 Difference]: With dead ends: 4774 [2020-09-17 14:32:26,060 INFO L226 Difference]: Without dead ends: 4757 [2020-09-17 14:32:26,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:32:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-17 14:32:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-17 14:32:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-17 14:32:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-17 14:32:26,170 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-17 14:32:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:26,171 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-17 14:32:26,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-17 14:32:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:26,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:26,173 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:26,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-17 14:32:26,173 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:26,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-09-17 14:32:26,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:26,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914067583] [2020-09-17 14:32:26,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:26,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914067583] [2020-09-17 14:32:26,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643467226] [2020-09-17 14:32:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:26,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:26,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:26,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:26,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:26,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34898385] [2020-09-17 14:32:26,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:26,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:26,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:26,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:26,489 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-09-17 14:32:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:27,504 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-17 14:32:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:27,505 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:27,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:27,517 INFO L225 Difference]: With dead ends: 6025 [2020-09-17 14:32:27,517 INFO L226 Difference]: Without dead ends: 6017 [2020-09-17 14:32:27,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:27,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-17 14:32:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-17 14:32:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-17 14:32:27,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-17 14:32:27,621 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-17 14:32:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:27,622 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-17 14:32:27,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:27,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-17 14:32:27,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:27,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:27,624 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:27,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-17 14:32:27,837 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:27,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:27,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-09-17 14:32:27,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:27,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040493539] [2020-09-17 14:32:27,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:32:28,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040493539] [2020-09-17 14:32:28,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524346023] [2020-09-17 14:32:28,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:28,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:32:28,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:32:28,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:28,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:32:28,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:28,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:28,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439982877] [2020-09-17 14:32:28,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:28,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:28,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:28,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:28,253 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-09-17 14:32:29,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:29,234 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-17 14:32:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:29,236 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:29,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:29,248 INFO L225 Difference]: With dead ends: 5914 [2020-09-17 14:32:29,249 INFO L226 Difference]: Without dead ends: 5903 [2020-09-17 14:32:29,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:29,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-17 14:32:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-17 14:32:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-17 14:32:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-17 14:32:29,346 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-17 14:32:29,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:29,346 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-17 14:32:29,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-17 14:32:29,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:29,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:29,349 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:29,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:29,563 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:29,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:29,563 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-09-17 14:32:29,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:29,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665510098] [2020-09-17 14:32:29,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:29,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665510098] [2020-09-17 14:32:29,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142631776] [2020-09-17 14:32:29,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:29,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:32:29,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:32:29,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:29,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:29,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:29,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:29,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365825771] [2020-09-17 14:32:29,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:29,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:29,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:29,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:29,904 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-09-17 14:32:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:30,930 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-17 14:32:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:30,930 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:30,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:30,940 INFO L225 Difference]: With dead ends: 5907 [2020-09-17 14:32:30,941 INFO L226 Difference]: Without dead ends: 5899 [2020-09-17 14:32:30,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:30,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-17 14:32:31,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-17 14:32:31,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-17 14:32:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-17 14:32:31,032 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-17 14:32:31,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:31,033 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-17 14:32:31,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-17 14:32:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:31,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:31,036 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:31,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-17 14:32:31,251 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:31,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:31,252 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-09-17 14:32:31,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:31,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967203328] [2020-09-17 14:32:31,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:31,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967203328] [2020-09-17 14:32:31,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15863251] [2020-09-17 14:32:31,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:31,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:32:31,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:32:31,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:31,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:31,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:31,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:31,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341763158] [2020-09-17 14:32:31,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:31,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:31,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:31,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:31,578 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-09-17 14:32:32,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:32,565 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-17 14:32:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:32,565 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:32,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:32,577 INFO L225 Difference]: With dead ends: 5835 [2020-09-17 14:32:32,577 INFO L226 Difference]: Without dead ends: 5824 [2020-09-17 14:32:32,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:32,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-17 14:32:32,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-17 14:32:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-17 14:32:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-17 14:32:32,674 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-17 14:32:32,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:32,674 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-17 14:32:32,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:32,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-17 14:32:32,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:32,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:32,677 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:32,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-17 14:32:32,891 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:32,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:32,891 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-09-17 14:32:32,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:32,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003761068] [2020-09-17 14:32:32,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:32,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003761068] [2020-09-17 14:32:32,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:32,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:32:32,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6737201] [2020-09-17 14:32:32,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:32:32,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:32,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:32:32,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:32:32,998 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-09-17 14:32:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:33,927 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-09-17 14:32:33,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:33,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 14:32:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:33,938 INFO L225 Difference]: With dead ends: 5820 [2020-09-17 14:32:33,938 INFO L226 Difference]: Without dead ends: 5812 [2020-09-17 14:32:33,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:32:33,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-09-17 14:32:33,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-09-17 14:32:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-09-17 14:32:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-09-17 14:32:34,007 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-09-17 14:32:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:34,007 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-09-17 14:32:34,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:32:34,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-09-17 14:32:34,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:34,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:34,011 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:34,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-17 14:32:34,011 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:34,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:34,012 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-09-17 14:32:34,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:34,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341067403] [2020-09-17 14:32:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:34,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341067403] [2020-09-17 14:32:34,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:34,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:32:34,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720299696] [2020-09-17 14:32:34,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:32:34,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:34,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:32:34,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:32:34,113 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-09-17 14:32:34,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:34,884 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-09-17 14:32:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:34,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 14:32:34,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:34,895 INFO L225 Difference]: With dead ends: 5717 [2020-09-17 14:32:34,895 INFO L226 Difference]: Without dead ends: 5705 [2020-09-17 14:32:34,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:32:34,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-09-17 14:32:34,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-09-17 14:32:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-09-17 14:32:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-09-17 14:32:34,994 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-09-17 14:32:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:34,995 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-09-17 14:32:34,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:32:34,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-09-17 14:32:34,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:34,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:34,997 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:34,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-17 14:32:34,997 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:34,998 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-09-17 14:32:34,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:34,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817961413] [2020-09-17 14:32:34,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:32:35,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817961413] [2020-09-17 14:32:35,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:35,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:35,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554054976] [2020-09-17 14:32:35,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:35,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:35,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:35,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:35,069 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-09-17 14:32:35,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:35,179 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-09-17 14:32:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:35,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 14:32:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:35,187 INFO L225 Difference]: With dead ends: 2762 [2020-09-17 14:32:35,188 INFO L226 Difference]: Without dead ends: 2746 [2020-09-17 14:32:35,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:35,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-09-17 14:32:35,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-09-17 14:32:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-17 14:32:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-17 14:32:35,269 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-17 14:32:35,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:35,269 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-17 14:32:35,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:35,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-17 14:32:35,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-17 14:32:35,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:35,273 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:35,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-17 14:32:35,273 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:35,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:35,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-09-17 14:32:35,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:35,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134831848] [2020-09-17 14:32:35,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:32:35,291 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:32:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:32:35,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:32:35,314 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 14:32:35,314 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 14:32:35,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-17 14:32:35,315 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 14:32:35,316 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 14:32:35,316 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-17 14:32:35,330 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,331 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,332 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,332 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,332 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,332 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,332 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,332 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,333 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,333 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,333 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,333 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,333 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,333 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,334 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,334 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,334 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,334 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,334 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,334 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,335 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,335 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,335 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,335 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,336 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,336 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,336 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,336 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,337 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,337 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,337 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,337 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,338 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,338 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,338 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,338 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,339 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,339 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,339 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,339 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,339 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,340 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,340 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,340 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,340 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,340 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,341 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,341 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,341 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,341 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,342 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,342 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,342 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,342 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,342 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,343 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,343 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,343 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,343 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,343 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,344 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,344 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,344 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,344 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,345 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,345 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,345 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,345 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,346 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,346 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,346 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,346 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,348 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,348 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,348 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,349 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,349 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,349 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,349 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,350 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,353 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,354 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,354 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,354 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,354 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,359 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,359 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,360 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,360 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,360 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,361 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,362 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,362 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,362 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,362 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,364 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,364 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,365 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,365 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,365 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,367 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,367 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,367 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,368 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,368 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,368 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,369 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,370 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,370 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,370 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,370 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,370 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,373 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,375 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,376 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,376 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,378 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,378 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:35,381 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-17 14:32:35,382 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:32:35,382 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:32:35,382 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:32:35,382 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 14:32:35,382 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:32:35,383 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:32:35,383 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:32:35,383 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:32:35,385 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-09-17 14:32:35,386 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-17 14:32:35,411 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-17 14:32:35,411 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-17 14:32:35,413 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-09-17 14:32:35,419 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-17 14:32:35,441 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-17 14:32:35,442 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-17 14:32:35,443 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-09-17 14:32:35,449 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2264 [2020-09-17 14:32:35,450 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:32:37,092 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-17 14:32:37,202 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-17 14:32:37,489 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-09-17 14:32:37,758 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-17 14:32:37,861 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2999 [2020-09-17 14:32:37,862 INFO L214 etLargeBlockEncoding]: Total number of compositions: 104 [2020-09-17 14:32:37,862 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-17 14:32:38,227 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-17 14:32:38,228 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-17 14:32:38,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 14:32:38,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:38,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 14:32:38,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:38,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:38,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-09-17 14:32:38,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:38,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395845952] [2020-09-17 14:32:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:38,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395845952] [2020-09-17 14:32:38,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:38,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 14:32:38,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884905383] [2020-09-17 14:32:38,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 14:32:38,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:38,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 14:32:38,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:38,262 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-17 14:32:38,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:38,413 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-17 14:32:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:32:38,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 14:32:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:38,441 INFO L225 Difference]: With dead ends: 5844 [2020-09-17 14:32:38,442 INFO L226 Difference]: Without dead ends: 5479 [2020-09-17 14:32:38,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-17 14:32:38,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-17 14:32:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-17 14:32:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-17 14:32:38,657 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-17 14:32:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:38,657 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-17 14:32:38,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 14:32:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-17 14:32:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 14:32:38,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:38,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:38,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-17 14:32:38,658 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:38,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:38,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-09-17 14:32:38,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:38,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654228652] [2020-09-17 14:32:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:38,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654228652] [2020-09-17 14:32:38,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:38,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:38,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080549820] [2020-09-17 14:32:38,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:38,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:38,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:38,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:38,705 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-17 14:32:38,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:38,861 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-17 14:32:38,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:38,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 14:32:38,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:38,889 INFO L225 Difference]: With dead ends: 9673 [2020-09-17 14:32:38,889 INFO L226 Difference]: Without dead ends: 9666 [2020-09-17 14:32:38,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:38,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-17 14:32:39,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-17 14:32:39,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-17 14:32:39,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-17 14:32:39,167 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-17 14:32:39,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:39,167 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-17 14:32:39,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:39,168 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-17 14:32:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 14:32:39,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:39,168 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:39,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-17 14:32:39,168 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:39,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:39,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-09-17 14:32:39,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:39,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161318952] [2020-09-17 14:32:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:39,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161318952] [2020-09-17 14:32:39,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:39,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:39,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960297379] [2020-09-17 14:32:39,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:39,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:39,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:39,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:39,226 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-17 14:32:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:39,422 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-17 14:32:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:39,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 14:32:39,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:39,465 INFO L225 Difference]: With dead ends: 11081 [2020-09-17 14:32:39,465 INFO L226 Difference]: Without dead ends: 11068 [2020-09-17 14:32:39,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:39,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-17 14:32:40,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-17 14:32:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-17 14:32:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-17 14:32:40,478 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-17 14:32:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:40,478 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-17 14:32:40,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-17 14:32:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:32:40,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:40,479 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:40,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-17 14:32:40,480 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:40,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:40,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-09-17 14:32:40,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:40,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042612361] [2020-09-17 14:32:40,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:40,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042612361] [2020-09-17 14:32:40,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908506476] [2020-09-17 14:32:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:40,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:40,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:40,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:40,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:40,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123853672] [2020-09-17 14:32:40,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:40,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:40,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:40,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:40,709 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-09-17 14:32:41,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:41,238 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-17 14:32:41,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:41,238 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 14:32:41,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:41,304 INFO L225 Difference]: With dead ends: 16749 [2020-09-17 14:32:41,305 INFO L226 Difference]: Without dead ends: 16736 [2020-09-17 14:32:41,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:32:41,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-17 14:32:41,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-17 14:32:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-17 14:32:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-17 14:32:41,639 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-17 14:32:41,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:41,639 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-17 14:32:41,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:41,639 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-17 14:32:41,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:32:41,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:41,640 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:41,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:41,842 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:41,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:41,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-09-17 14:32:41,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:41,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765669634] [2020-09-17 14:32:41,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:41,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765669634] [2020-09-17 14:32:41,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:41,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:41,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171627182] [2020-09-17 14:32:41,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:41,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:41,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:41,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:41,913 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-17 14:32:42,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:42,323 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-17 14:32:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:42,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 14:32:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:42,548 INFO L225 Difference]: With dead ends: 17085 [2020-09-17 14:32:42,548 INFO L226 Difference]: Without dead ends: 17071 [2020-09-17 14:32:42,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:32:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-17 14:32:42,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-17 14:32:42,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-17 14:32:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-17 14:32:42,847 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-17 14:32:42,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:42,847 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-17 14:32:42,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-17 14:32:42,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 14:32:42,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:42,848 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:42,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-17 14:32:42,849 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:42,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:42,849 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-09-17 14:32:42,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:42,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576381437] [2020-09-17 14:32:42,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:42,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576381437] [2020-09-17 14:32:42,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:42,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:42,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635379975] [2020-09-17 14:32:42,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:42,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:42,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:42,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:42,908 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-17 14:32:43,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:43,088 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-17 14:32:43,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:43,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 14:32:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:43,139 INFO L225 Difference]: With dead ends: 12234 [2020-09-17 14:32:43,139 INFO L226 Difference]: Without dead ends: 12212 [2020-09-17 14:32:43,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:43,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-17 14:32:43,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-17 14:32:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-17 14:32:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-17 14:32:43,417 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-17 14:32:43,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:43,418 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-17 14:32:43,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:43,418 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-17 14:32:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:43,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:43,419 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:43,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-17 14:32:43,420 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:43,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:43,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-09-17 14:32:43,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:43,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486061477] [2020-09-17 14:32:43,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 14:32:43,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486061477] [2020-09-17 14:32:43,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366656299] [2020-09-17 14:32:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:43,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:43,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 14:32:43,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:43,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:43,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101098640] [2020-09-17 14:32:43,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:43,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:43,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:43,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:43,659 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-09-17 14:32:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:44,053 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-17 14:32:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:44,053 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 14:32:44,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:44,107 INFO L225 Difference]: With dead ends: 19016 [2020-09-17 14:32:44,107 INFO L226 Difference]: Without dead ends: 18998 [2020-09-17 14:32:44,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:32:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-17 14:32:44,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-17 14:32:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-17 14:32:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-17 14:32:44,639 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-17 14:32:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:44,639 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-17 14:32:44,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-17 14:32:44,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:44,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:44,641 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:44,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-17 14:32:44,842 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:44,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:44,843 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-09-17 14:32:44,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:44,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987741772] [2020-09-17 14:32:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:44,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987741772] [2020-09-17 14:32:44,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060200816] [2020-09-17 14:32:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:45,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:45,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:45,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:45,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:45,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370475093] [2020-09-17 14:32:45,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:45,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:45,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:45,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:45,108 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-09-17 14:32:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:45,618 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-17 14:32:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:45,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 14:32:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:45,712 INFO L225 Difference]: With dead ends: 19670 [2020-09-17 14:32:45,712 INFO L226 Difference]: Without dead ends: 19645 [2020-09-17 14:32:45,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:32:45,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-17 14:32:46,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-17 14:32:46,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-17 14:32:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-17 14:32:46,154 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-17 14:32:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:46,155 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-17 14:32:46,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:46,155 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-17 14:32:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:46,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:46,156 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:46,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-17 14:32:46,357 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:46,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:46,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-09-17 14:32:46,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:46,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940414138] [2020-09-17 14:32:46,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:46,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940414138] [2020-09-17 14:32:46,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:46,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:46,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562095821] [2020-09-17 14:32:46,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:46,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:46,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:46,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:46,444 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-17 14:32:47,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:47,140 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-17 14:32:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:47,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 14:32:47,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:47,208 INFO L225 Difference]: With dead ends: 19852 [2020-09-17 14:32:47,208 INFO L226 Difference]: Without dead ends: 19827 [2020-09-17 14:32:47,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:32:47,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-17 14:32:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-17 14:32:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-17 14:32:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-17 14:32:47,585 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-17 14:32:47,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:47,585 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-17 14:32:47,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:47,586 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-17 14:32:47,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:47,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:47,587 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:47,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-17 14:32:47,587 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:47,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:47,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-09-17 14:32:47,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:47,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080271145] [2020-09-17 14:32:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:47,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080271145] [2020-09-17 14:32:47,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:47,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:47,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157293538] [2020-09-17 14:32:47,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:47,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:47,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:47,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:47,663 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-17 14:32:48,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:48,213 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-17 14:32:48,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:48,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 14:32:48,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:48,309 INFO L225 Difference]: With dead ends: 19555 [2020-09-17 14:32:48,309 INFO L226 Difference]: Without dead ends: 19530 [2020-09-17 14:32:48,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:32:48,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-17 14:32:48,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-17 14:32:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-17 14:32:48,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-17 14:32:48,871 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-17 14:32:48,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:48,871 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-17 14:32:48,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:48,871 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-17 14:32:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:48,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:48,873 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:48,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-17 14:32:48,873 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:48,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:48,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-09-17 14:32:48,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:48,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789029305] [2020-09-17 14:32:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:48,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789029305] [2020-09-17 14:32:48,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831117994] [2020-09-17 14:32:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:49,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:49,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:49,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:49,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:49,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064426200] [2020-09-17 14:32:49,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:49,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:49,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:49,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:49,226 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-09-17 14:32:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:50,594 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-17 14:32:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:50,595 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:50,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:50,673 INFO L225 Difference]: With dead ends: 26969 [2020-09-17 14:32:50,673 INFO L226 Difference]: Without dead ends: 26957 [2020-09-17 14:32:50,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:50,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-17 14:32:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-17 14:32:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-17 14:32:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-17 14:32:51,114 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-17 14:32:51,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:51,114 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-17 14:32:51,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:51,114 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-17 14:32:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:51,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:51,116 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:51,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:51,317 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:51,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:51,317 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-09-17 14:32:51,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:51,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338161166] [2020-09-17 14:32:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 14:32:51,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338161166] [2020-09-17 14:32:51,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604718549] [2020-09-17 14:32:51,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:51,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:32:51,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:32:51,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:51,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 14:32:51,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:51,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:51,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18855893] [2020-09-17 14:32:51,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:51,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:51,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:51,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:51,623 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-09-17 14:32:52,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:52,758 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-17 14:32:52,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:52,759 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:52,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:52,831 INFO L225 Difference]: With dead ends: 26661 [2020-09-17 14:32:52,831 INFO L226 Difference]: Without dead ends: 26645 [2020-09-17 14:32:52,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-17 14:32:53,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-17 14:32:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-17 14:32:53,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-17 14:32:53,481 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-17 14:32:53,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:53,481 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-17 14:32:53,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:53,481 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-17 14:32:53,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:53,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:53,483 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:53,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-17 14:32:53,684 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:53,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:53,685 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-09-17 14:32:53,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:53,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214629392] [2020-09-17 14:32:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:53,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214629392] [2020-09-17 14:32:53,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696546915] [2020-09-17 14:32:53,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:53,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:32:53,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:32:53,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:53,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:53,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:53,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:53,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680314784] [2020-09-17 14:32:53,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:53,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:53,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:53,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:53,982 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-09-17 14:32:55,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:55,171 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-17 14:32:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:55,172 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:55,258 INFO L225 Difference]: With dead ends: 26686 [2020-09-17 14:32:55,258 INFO L226 Difference]: Without dead ends: 26674 [2020-09-17 14:32:55,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-17 14:32:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-17 14:32:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-17 14:32:55,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-17 14:32:55,717 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-17 14:32:55,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:55,717 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-17 14:32:55,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-17 14:32:55,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:55,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:55,719 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:55,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:55,920 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:55,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:55,921 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-09-17 14:32:55,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:55,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953177461] [2020-09-17 14:32:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:56,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:56,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953177461] [2020-09-17 14:32:56,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279198309] [2020-09-17 14:32:56,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:56,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:32:56,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:32:56,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:56,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:56,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:56,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:56,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:56,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433628116] [2020-09-17 14:32:56,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:56,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:56,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:56,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:56,284 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-09-17 14:32:57,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:57,688 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-17 14:32:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:57,689 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:57,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:57,765 INFO L225 Difference]: With dead ends: 26489 [2020-09-17 14:32:57,765 INFO L226 Difference]: Without dead ends: 26473 [2020-09-17 14:32:57,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:57,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-17 14:32:58,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-17 14:32:58,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-17 14:32:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-17 14:32:58,160 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-17 14:32:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:58,160 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-17 14:32:58,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:58,160 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-17 14:32:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:58,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:58,162 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:58,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-17 14:32:58,363 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:58,364 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-09-17 14:32:58,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:58,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717643503] [2020-09-17 14:32:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:32:58,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717643503] [2020-09-17 14:32:58,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:58,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:58,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548078577] [2020-09-17 14:32:58,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:58,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:58,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:58,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:58,423 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-17 14:32:58,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:58,587 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-17 14:32:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:58,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 14:32:58,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:58,623 INFO L225 Difference]: With dead ends: 13251 [2020-09-17 14:32:58,624 INFO L226 Difference]: Without dead ends: 13220 [2020-09-17 14:32:58,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:58,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-17 14:32:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-17 14:32:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-17 14:32:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-17 14:32:58,920 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-17 14:32:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:58,920 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-17 14:32:58,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-17 14:32:58,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:58,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:58,921 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:58,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-17 14:32:58,922 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:58,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:58,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-09-17 14:32:58,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:58,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803717696] [2020-09-17 14:32:58,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:59,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803717696] [2020-09-17 14:32:59,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:59,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:32:59,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246086764] [2020-09-17 14:32:59,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:32:59,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:59,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:32:59,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:32:59,026 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-17 14:33:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:00,033 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-17 14:33:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:00,034 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 14:33:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:00,349 INFO L225 Difference]: With dead ends: 29788 [2020-09-17 14:33:00,349 INFO L226 Difference]: Without dead ends: 29770 [2020-09-17 14:33:00,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:00,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-17 14:33:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-17 14:33:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-17 14:33:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-17 14:33:00,791 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-17 14:33:00,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:00,791 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-17 14:33:00,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-17 14:33:00,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:33:00,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:00,793 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:00,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-17 14:33:00,793 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:00,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:00,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-09-17 14:33:00,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:00,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329201470] [2020-09-17 14:33:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:33:00,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329201470] [2020-09-17 14:33:00,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:00,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:00,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486784188] [2020-09-17 14:33:00,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:00,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:00,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:00,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:00,894 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-17 14:33:01,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:01,937 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-17 14:33:01,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:01,937 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 14:33:01,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:02,007 INFO L225 Difference]: With dead ends: 29379 [2020-09-17 14:33:02,008 INFO L226 Difference]: Without dead ends: 29356 [2020-09-17 14:33:02,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-17 14:33:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-17 14:33:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-17 14:33:02,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-17 14:33:02,500 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-17 14:33:02,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:02,500 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-17 14:33:02,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:02,500 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-17 14:33:02,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:33:02,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:02,502 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:02,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-17 14:33:02,502 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:02,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:02,503 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-09-17 14:33:02,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:02,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228819522] [2020-09-17 14:33:02,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:02,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228819522] [2020-09-17 14:33:02,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573166308] [2020-09-17 14:33:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:02,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:33:02,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:02,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:02,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:33:02,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951832403] [2020-09-17 14:33:02,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:33:02,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:02,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:33:02,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:33:02,767 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-09-17 14:33:03,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:03,246 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-17 14:33:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:33:03,247 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 14:33:03,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:03,303 INFO L225 Difference]: With dead ends: 19727 [2020-09-17 14:33:03,303 INFO L226 Difference]: Without dead ends: 19703 [2020-09-17 14:33:03,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:33:03,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-17 14:33:03,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-17 14:33:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-17 14:33:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-17 14:33:03,865 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-17 14:33:03,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:03,866 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-17 14:33:03,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:33:03,866 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-17 14:33:03,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:33:03,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:03,869 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:04,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-17 14:33:04,076 INFO L427 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:04,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:04,077 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-09-17 14:33:04,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:04,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518232015] [2020-09-17 14:33:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:33:04,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518232015] [2020-09-17 14:33:04,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90894619] [2020-09-17 14:33:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:04,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:33:04,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:33:04,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:04,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:33:04,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748851289] [2020-09-17 14:33:04,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:33:04,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:04,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:33:04,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:33:04,337 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-09-17 14:33:04,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:04,806 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-17 14:33:04,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:33:04,807 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 14:33:04,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:04,873 INFO L225 Difference]: With dead ends: 20694 [2020-09-17 14:33:04,873 INFO L226 Difference]: Without dead ends: 20666 [2020-09-17 14:33:04,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:33:04,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-17 14:33:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-17 14:33:05,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-17 14:33:05,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-17 14:33:05,255 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-17 14:33:05,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:05,256 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-17 14:33:05,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:33:05,256 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-17 14:33:05,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:33:05,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:05,259 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:05,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:05,472 INFO L427 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:05,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:05,473 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-09-17 14:33:05,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:05,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421234854] [2020-09-17 14:33:05,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:05,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421234854] [2020-09-17 14:33:05,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756899736] [2020-09-17 14:33:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:05,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:33:05,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:05,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:05,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:33:05,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580428483] [2020-09-17 14:33:05,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:33:05,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:05,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:33:05,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:33:05,738 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-09-17 14:33:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:06,229 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-17 14:33:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:33:06,230 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 14:33:06,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:06,290 INFO L225 Difference]: With dead ends: 21396 [2020-09-17 14:33:06,290 INFO L226 Difference]: Without dead ends: 21359 [2020-09-17 14:33:06,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:33:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-17 14:33:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-17 14:33:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-17 14:33:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-17 14:33:06,709 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-17 14:33:06,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:06,709 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-17 14:33:06,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:33:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-17 14:33:06,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:33:06,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:06,715 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:06,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-17 14:33:06,922 INFO L427 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:06,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:06,923 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-09-17 14:33:06,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:06,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009826285] [2020-09-17 14:33:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:07,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009826285] [2020-09-17 14:33:07,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:07,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:33:07,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309478969] [2020-09-17 14:33:07,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:33:07,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:07,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:33:07,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:33:07,004 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-17 14:33:07,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:07,624 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-17 14:33:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:33:07,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 14:33:07,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:07,687 INFO L225 Difference]: With dead ends: 21489 [2020-09-17 14:33:07,687 INFO L226 Difference]: Without dead ends: 21452 [2020-09-17 14:33:07,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:33:07,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-17 14:33:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-17 14:33:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-17 14:33:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-17 14:33:08,051 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-17 14:33:08,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:08,054 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-17 14:33:08,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:33:08,054 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-17 14:33:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:33:08,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:08,057 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:08,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-17 14:33:08,058 INFO L427 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:08,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:08,058 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-09-17 14:33:08,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:08,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178618924] [2020-09-17 14:33:08,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:08,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178618924] [2020-09-17 14:33:08,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:08,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:33:08,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726367604] [2020-09-17 14:33:08,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:33:08,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:08,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:33:08,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:33:08,136 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-17 14:33:08,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:08,610 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-09-17 14:33:08,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:33:08,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 14:33:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:08,667 INFO L225 Difference]: With dead ends: 21198 [2020-09-17 14:33:08,668 INFO L226 Difference]: Without dead ends: 21161 [2020-09-17 14:33:08,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:33:08,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-09-17 14:33:09,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-09-17 14:33:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-17 14:33:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-17 14:33:09,069 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-17 14:33:09,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:09,069 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-17 14:33:09,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:33:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-17 14:33:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:33:09,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:09,072 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:09,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-17 14:33:09,072 INFO L427 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:09,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:09,073 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-09-17 14:33:09,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:09,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011584362] [2020-09-17 14:33:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:09,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011584362] [2020-09-17 14:33:09,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:09,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:33:09,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339758057] [2020-09-17 14:33:09,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:33:09,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:09,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:33:09,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:33:09,153 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-17 14:33:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:09,662 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-09-17 14:33:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:33:09,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 14:33:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:09,758 INFO L225 Difference]: With dead ends: 21067 [2020-09-17 14:33:09,758 INFO L226 Difference]: Without dead ends: 21030 [2020-09-17 14:33:09,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:33:09,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-09-17 14:33:10,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-09-17 14:33:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-17 14:33:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-17 14:33:10,164 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-17 14:33:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:10,164 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-17 14:33:10,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:33:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-17 14:33:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:10,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:10,168 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:10,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-17 14:33:10,168 INFO L427 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:10,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:10,168 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-09-17 14:33:10,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:10,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877759294] [2020-09-17 14:33:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:33:10,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877759294] [2020-09-17 14:33:10,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039130307] [2020-09-17 14:33:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:10,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:10,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:33:10,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:10,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:10,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876633586] [2020-09-17 14:33:10,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:10,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:10,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:10,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:10,473 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-09-17 14:33:11,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:11,942 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-17 14:33:11,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:11,943 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:11,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:12,022 INFO L225 Difference]: With dead ends: 30145 [2020-09-17 14:33:12,022 INFO L226 Difference]: Without dead ends: 30125 [2020-09-17 14:33:12,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-17 14:33:12,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-17 14:33:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-17 14:33:12,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-17 14:33:12,495 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-17 14:33:12,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:12,495 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-17 14:33:12,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:12,495 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-17 14:33:12,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:12,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:12,499 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:12,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-17 14:33:12,700 INFO L427 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:12,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:12,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-09-17 14:33:12,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:12,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890629302] [2020-09-17 14:33:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:33:12,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890629302] [2020-09-17 14:33:12,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651028075] [2020-09-17 14:33:12,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:12,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:12,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:33:13,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:13,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:13,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958911965] [2020-09-17 14:33:13,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:13,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:13,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:13,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:13,039 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-09-17 14:33:14,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:14,210 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-17 14:33:14,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:14,210 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:14,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:14,282 INFO L225 Difference]: With dead ends: 29696 [2020-09-17 14:33:14,282 INFO L226 Difference]: Without dead ends: 29676 [2020-09-17 14:33:14,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-17 14:33:14,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-17 14:33:14,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-17 14:33:14,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-17 14:33:14,740 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-17 14:33:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:14,740 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-17 14:33:14,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-17 14:33:14,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:14,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:14,744 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:14,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-17 14:33:14,959 INFO L427 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:14,959 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-09-17 14:33:14,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:14,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685513737] [2020-09-17 14:33:14,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:15,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685513737] [2020-09-17 14:33:15,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761914093] [2020-09-17 14:33:15,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:15,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:33:15,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:15,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:15,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:15,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:15,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:15,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395646169] [2020-09-17 14:33:15,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:15,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:15,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:15,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:15,295 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-09-17 14:33:16,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:16,468 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-17 14:33:16,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:16,469 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:16,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:16,545 INFO L225 Difference]: With dead ends: 29267 [2020-09-17 14:33:16,546 INFO L226 Difference]: Without dead ends: 29245 [2020-09-17 14:33:16,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:16,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-17 14:33:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-17 14:33:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-17 14:33:17,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-17 14:33:17,175 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-17 14:33:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:17,175 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-17 14:33:17,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:17,175 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-17 14:33:17,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:17,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:17,178 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:17,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-17 14:33:17,379 INFO L427 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:17,380 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-09-17 14:33:17,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:17,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522538242] [2020-09-17 14:33:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:17,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522538242] [2020-09-17 14:33:17,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545216314] [2020-09-17 14:33:17,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:17,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:33:17,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:17,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:17,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:17,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:17,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:17,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137435057] [2020-09-17 14:33:17,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:17,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:17,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:17,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:17,725 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-09-17 14:33:19,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:19,118 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-17 14:33:19,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:19,119 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:19,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:19,199 INFO L225 Difference]: With dead ends: 28920 [2020-09-17 14:33:19,200 INFO L226 Difference]: Without dead ends: 28898 [2020-09-17 14:33:19,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:19,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-17 14:33:19,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-17 14:33:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-17 14:33:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-17 14:33:19,672 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-17 14:33:19,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:19,672 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-17 14:33:19,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:19,672 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-17 14:33:19,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:19,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:19,676 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:19,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:19,877 INFO L427 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:19,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:19,877 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-09-17 14:33:19,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:19,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854881559] [2020-09-17 14:33:19,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-17 14:33:19,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854881559] [2020-09-17 14:33:19,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532972714] [2020-09-17 14:33:19,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:20,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 14:33:20,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:20,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:20,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-17 14:33:20,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:20,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:20,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115896457] [2020-09-17 14:33:20,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:20,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:20,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:20,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:20,214 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-09-17 14:33:21,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:21,385 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-17 14:33:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:21,386 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:21,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:21,466 INFO L225 Difference]: With dead ends: 29038 [2020-09-17 14:33:21,467 INFO L226 Difference]: Without dead ends: 29018 [2020-09-17 14:33:21,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:21,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-17 14:33:21,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-17 14:33:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-17 14:33:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-17 14:33:21,957 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-17 14:33:21,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:21,957 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-17 14:33:21,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:21,957 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-17 14:33:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:21,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:21,961 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:22,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-17 14:33:22,162 INFO L427 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:22,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:22,163 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-09-17 14:33:22,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:22,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212593981] [2020-09-17 14:33:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 14:33:22,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212593981] [2020-09-17 14:33:22,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812751988] [2020-09-17 14:33:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:22,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:22,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 14:33:22,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:22,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:22,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948824656] [2020-09-17 14:33:22,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:22,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:22,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:22,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:22,685 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-09-17 14:33:24,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:24,064 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-09-17 14:33:24,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:24,065 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:24,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:24,144 INFO L225 Difference]: With dead ends: 29417 [2020-09-17 14:33:24,145 INFO L226 Difference]: Without dead ends: 29397 [2020-09-17 14:33:24,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-09-17 14:33:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-09-17 14:33:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-09-17 14:33:24,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-09-17 14:33:24,616 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-09-17 14:33:24,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:24,617 INFO L479 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-09-17 14:33:24,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:24,617 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-09-17 14:33:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:24,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:24,620 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:24,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:24,821 INFO L427 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:24,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:24,822 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-09-17 14:33:24,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:24,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560185938] [2020-09-17 14:33:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:33:24,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560185938] [2020-09-17 14:33:24,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614427927] [2020-09-17 14:33:24,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:25,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:33:25,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:25,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:25,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:33:25,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:25,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:25,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790132458] [2020-09-17 14:33:25,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:25,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:25,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:25,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:25,206 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-09-17 14:33:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:26,406 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-09-17 14:33:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:26,407 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:26,482 INFO L225 Difference]: With dead ends: 29064 [2020-09-17 14:33:26,482 INFO L226 Difference]: Without dead ends: 29037 [2020-09-17 14:33:26,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:26,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-09-17 14:33:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-09-17 14:33:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-09-17 14:33:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-09-17 14:33:26,956 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-09-17 14:33:26,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:26,956 INFO L479 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-09-17 14:33:26,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:26,956 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-09-17 14:33:26,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:26,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:26,960 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:27,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-17 14:33:27,161 INFO L427 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:27,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:27,161 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-09-17 14:33:27,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:27,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363373322] [2020-09-17 14:33:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:33:27,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363373322] [2020-09-17 14:33:27,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741515457] [2020-09-17 14:33:27,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:27,344 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:33:27,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:27,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:27,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:33:27,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:27,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:27,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428155125] [2020-09-17 14:33:27,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:27,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:27,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:27,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:27,480 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-09-17 14:33:28,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:28,650 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-09-17 14:33:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:28,651 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:28,727 INFO L225 Difference]: With dead ends: 28523 [2020-09-17 14:33:28,727 INFO L226 Difference]: Without dead ends: 28501 [2020-09-17 14:33:28,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-09-17 14:33:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-09-17 14:33:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-17 14:33:29,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-17 14:33:29,329 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-17 14:33:29,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:29,329 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-17 14:33:29,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-17 14:33:29,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:29,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:29,334 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:29,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:29,535 INFO L427 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:29,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:29,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-09-17 14:33:29,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:29,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753293953] [2020-09-17 14:33:29,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:29,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753293953] [2020-09-17 14:33:29,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749287390] [2020-09-17 14:33:29,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:29,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:33:29,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:29,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:29,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:29,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:29,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:29,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637392573] [2020-09-17 14:33:29,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:29,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:29,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:29,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:29,875 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-09-17 14:33:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:31,011 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-17 14:33:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:31,012 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:31,094 INFO L225 Difference]: With dead ends: 28636 [2020-09-17 14:33:31,094 INFO L226 Difference]: Without dead ends: 28616 [2020-09-17 14:33:31,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-17 14:33:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-17 14:33:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-17 14:33:31,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-17 14:33:31,573 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-17 14:33:31,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:31,573 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-17 14:33:31,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:31,573 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-17 14:33:31,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:31,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:31,577 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:31,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-17 14:33:31,783 INFO L427 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:31,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:31,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-09-17 14:33:31,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:31,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797138795] [2020-09-17 14:33:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:31,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797138795] [2020-09-17 14:33:31,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723553095] [2020-09-17 14:33:31,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:31,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:33:31,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:31,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:31,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:32,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:32,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:32,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311593034] [2020-09-17 14:33:32,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:32,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:32,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:32,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:32,119 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-09-17 14:33:33,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:33,253 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-17 14:33:33,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:33,254 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:33,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:33,336 INFO L225 Difference]: With dead ends: 28297 [2020-09-17 14:33:33,336 INFO L226 Difference]: Without dead ends: 28277 [2020-09-17 14:33:33,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-17 14:33:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-17 14:33:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-17 14:33:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-17 14:33:33,810 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-17 14:33:33,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:33,810 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-17 14:33:33,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:33,810 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-17 14:33:33,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:33,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:33,814 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:34,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:34,025 INFO L427 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:34,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:34,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-09-17 14:33:34,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:34,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161718071] [2020-09-17 14:33:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:34,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161718071] [2020-09-17 14:33:34,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111472604] [2020-09-17 14:33:34,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:34,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:33:34,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:34,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:34,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:34,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:34,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:34,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681843472] [2020-09-17 14:33:34,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:34,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:34,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:34,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:34,366 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-09-17 14:33:35,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:35,774 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-17 14:33:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:35,775 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:35,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:35,850 INFO L225 Difference]: With dead ends: 28565 [2020-09-17 14:33:35,851 INFO L226 Difference]: Without dead ends: 28538 [2020-09-17 14:33:35,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:36,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-17 14:33:36,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-17 14:33:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-17 14:33:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-17 14:33:36,451 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-17 14:33:36,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:36,452 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-17 14:33:36,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-17 14:33:36,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:36,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:36,456 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:36,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-17 14:33:36,657 INFO L427 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:36,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:36,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-09-17 14:33:36,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:36,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434245213] [2020-09-17 14:33:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:36,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434245213] [2020-09-17 14:33:36,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428782342] [2020-09-17 14:33:36,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:36,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:33:36,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:36,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:36,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:37,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:37,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:37,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872054958] [2020-09-17 14:33:37,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:37,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:37,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:37,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:37,009 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-09-17 14:33:38,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:38,287 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-17 14:33:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:38,288 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:38,369 INFO L225 Difference]: With dead ends: 28213 [2020-09-17 14:33:38,369 INFO L226 Difference]: Without dead ends: 28186 [2020-09-17 14:33:38,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:38,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-17 14:33:38,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-17 14:33:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-17 14:33:38,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-17 14:33:38,811 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-17 14:33:38,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:38,811 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-17 14:33:38,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:38,811 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-17 14:33:38,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:38,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:38,814 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:39,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:39,015 INFO L427 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:39,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:39,016 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-09-17 14:33:39,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:39,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723585166] [2020-09-17 14:33:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:39,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723585166] [2020-09-17 14:33:39,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:39,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:39,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039012368] [2020-09-17 14:33:39,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:39,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:39,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:39,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:39,122 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-09-17 14:33:40,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:40,231 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-09-17 14:33:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:40,232 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:33:40,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:40,309 INFO L225 Difference]: With dead ends: 28226 [2020-09-17 14:33:40,310 INFO L226 Difference]: Without dead ends: 28206 [2020-09-17 14:33:40,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-09-17 14:33:40,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-09-17 14:33:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-09-17 14:33:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-09-17 14:33:40,755 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-09-17 14:33:40,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:40,755 INFO L479 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-09-17 14:33:40,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-09-17 14:33:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:40,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:40,759 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:40,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-17 14:33:40,760 INFO L427 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:40,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:40,760 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-09-17 14:33:40,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:40,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204728978] [2020-09-17 14:33:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:40,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204728978] [2020-09-17 14:33:40,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:40,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:40,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562341776] [2020-09-17 14:33:40,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:40,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:40,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:40,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:40,866 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-09-17 14:33:41,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:41,973 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-09-17 14:33:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:41,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:33:41,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:42,065 INFO L225 Difference]: With dead ends: 27801 [2020-09-17 14:33:42,065 INFO L226 Difference]: Without dead ends: 27781 [2020-09-17 14:33:42,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:42,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-09-17 14:33:42,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-09-17 14:33:42,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-09-17 14:33:42,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-09-17 14:33:42,678 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-09-17 14:33:42,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:42,679 INFO L479 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-09-17 14:33:42,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:42,679 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-09-17 14:33:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:42,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:42,682 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:42,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-17 14:33:42,682 INFO L427 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:42,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:42,683 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-09-17 14:33:42,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:42,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357299764] [2020-09-17 14:33:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:42,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357299764] [2020-09-17 14:33:42,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:42,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:42,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782126969] [2020-09-17 14:33:42,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:42,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:42,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:42,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:42,784 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-09-17 14:33:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:43,872 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-09-17 14:33:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:43,872 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:33:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:43,957 INFO L225 Difference]: With dead ends: 27548 [2020-09-17 14:33:43,958 INFO L226 Difference]: Without dead ends: 27521 [2020-09-17 14:33:43,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:44,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-09-17 14:33:44,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-09-17 14:33:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-09-17 14:33:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-09-17 14:33:44,405 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-09-17 14:33:44,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:44,406 INFO L479 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-09-17 14:33:44,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:44,406 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-09-17 14:33:44,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:44,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:44,409 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:44,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-17 14:33:44,410 INFO L427 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:44,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:44,410 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-09-17 14:33:44,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:44,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219239837] [2020-09-17 14:33:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:44,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219239837] [2020-09-17 14:33:44,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:44,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:44,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436758978] [2020-09-17 14:33:44,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:44,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:44,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:44,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:44,514 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-09-17 14:33:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:45,607 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-09-17 14:33:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:45,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:33:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:45,682 INFO L225 Difference]: With dead ends: 27167 [2020-09-17 14:33:45,683 INFO L226 Difference]: Without dead ends: 27147 [2020-09-17 14:33:45,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-09-17 14:33:46,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-09-17 14:33:46,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-09-17 14:33:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-09-17 14:33:46,104 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-09-17 14:33:46,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:46,105 INFO L479 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-09-17 14:33:46,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:46,105 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-09-17 14:33:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:46,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:46,108 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:46,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-17 14:33:46,108 INFO L427 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:46,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:46,109 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-09-17 14:33:46,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:46,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354841940] [2020-09-17 14:33:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:46,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354841940] [2020-09-17 14:33:46,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:46,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:46,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812291575] [2020-09-17 14:33:46,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:46,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:46,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:46,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:46,213 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-09-17 14:33:47,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:47,368 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-09-17 14:33:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:47,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:33:47,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:47,448 INFO L225 Difference]: With dead ends: 26955 [2020-09-17 14:33:47,448 INFO L226 Difference]: Without dead ends: 26928 [2020-09-17 14:33:47,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:47,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-09-17 14:33:47,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-09-17 14:33:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-09-17 14:33:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-09-17 14:33:47,912 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-09-17 14:33:47,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:47,912 INFO L479 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-09-17 14:33:47,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-09-17 14:33:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:47,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:47,916 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:47,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-17 14:33:47,917 INFO L427 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:47,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:47,917 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-09-17 14:33:47,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:47,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74553974] [2020-09-17 14:33:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:48,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74553974] [2020-09-17 14:33:48,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:48,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:48,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887089830] [2020-09-17 14:33:48,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:48,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:48,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:48,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:48,037 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-09-17 14:33:49,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:49,284 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-09-17 14:33:49,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:49,285 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:33:49,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:49,358 INFO L225 Difference]: With dead ends: 26632 [2020-09-17 14:33:49,358 INFO L226 Difference]: Without dead ends: 26605 [2020-09-17 14:33:49,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:49,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-09-17 14:33:49,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-09-17 14:33:49,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-09-17 14:33:50,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-09-17 14:33:50,028 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-09-17 14:33:50,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:50,028 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-09-17 14:33:50,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:50,028 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-09-17 14:33:50,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:50,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:50,032 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:50,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-17 14:33:50,032 INFO L427 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:50,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-09-17 14:33:50,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:50,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689779621] [2020-09-17 14:33:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 14:33:50,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689779621] [2020-09-17 14:33:50,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:50,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:33:50,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828709560] [2020-09-17 14:33:50,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:33:50,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:50,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:33:50,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:33:50,099 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-09-17 14:33:50,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:50,295 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-09-17 14:33:50,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:33:50,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-17 14:33:50,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:50,333 INFO L225 Difference]: With dead ends: 11919 [2020-09-17 14:33:50,333 INFO L226 Difference]: Without dead ends: 11887 [2020-09-17 14:33:50,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:33:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-09-17 14:33:50,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-09-17 14:33:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-17 14:33:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-17 14:33:50,636 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-17 14:33:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:50,636 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-17 14:33:50,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:33:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-17 14:33:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-17 14:33:50,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:50,641 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:50,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-17 14:33:50,641 INFO L427 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:50,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:50,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-09-17 14:33:50,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:50,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640184560] [2020-09-17 14:33:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:33:50,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:33:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:33:50,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:33:50,672 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 14:33:50,672 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 14:33:50,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-17 14:33:50,673 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 14:33:50,673 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 14:33:50,674 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-17 14:33:50,688 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,688 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,688 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,688 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,689 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,689 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,689 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,689 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,689 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,689 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,689 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,690 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,690 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,690 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,690 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,690 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,690 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,691 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,691 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,691 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,691 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,691 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,691 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,691 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,691 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,692 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,692 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,692 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,692 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,692 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,692 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,692 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,692 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,692 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,692 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,693 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,693 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,693 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,693 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,693 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,693 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,694 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,694 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,694 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,694 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,694 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,694 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,694 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,694 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,694 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,695 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,695 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,695 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,695 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,695 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,695 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,695 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,695 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,695 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,695 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,696 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,696 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,696 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,696 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,696 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,696 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,696 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,699 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,699 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,699 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,699 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,699 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,699 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,699 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,702 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,702 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,704 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,704 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,704 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,704 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,705 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,706 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,706 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,706 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,706 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,706 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,709 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,709 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,710 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,710 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,710 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,710 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,711 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,712 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,712 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,712 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,712 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,712 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,714 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,714 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,714 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,714 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,715 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,715 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,715 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,715 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,715 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,715 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,718 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,719 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,719 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,719 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,719 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,719 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,719 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,720 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,720 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,720 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,720 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,720 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,721 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,721 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,722 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,722 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,722 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,722 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,722 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:50,723 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-17 14:33:50,723 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:33:50,724 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:33:50,724 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:33:50,724 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 14:33:50,724 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:33:50,724 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:33:50,724 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:33:50,724 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:33:50,725 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-09-17 14:33:50,726 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-17 14:33:50,745 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-17 14:33:50,746 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-17 14:33:50,747 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-09-17 14:33:50,753 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-17 14:33:50,771 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-17 14:33:50,772 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-17 14:33:50,773 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-09-17 14:33:50,778 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-09-17 14:33:50,778 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:33:53,156 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-09-17 14:33:53,535 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-17 14:33:53,735 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-17 14:33:53,742 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3678 [2020-09-17 14:33:53,742 INFO L214 etLargeBlockEncoding]: Total number of compositions: 113 [2020-09-17 14:33:53,743 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-17 14:33:55,465 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-17 14:33:55,466 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-17 14:33:55,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 14:33:55,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:55,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 14:33:55,466 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:55,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:55,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-09-17 14:33:55,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:55,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497774252] [2020-09-17 14:33:55,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:55,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:33:55,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497774252] [2020-09-17 14:33:55,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:55,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 14:33:55,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57637858] [2020-09-17 14:33:55,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 14:33:55,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:55,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 14:33:55,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:33:55,487 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-17 14:33:55,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:55,693 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-17 14:33:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:33:55,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 14:33:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:55,754 INFO L225 Difference]: With dead ends: 17885 [2020-09-17 14:33:55,754 INFO L226 Difference]: Without dead ends: 16791 [2020-09-17 14:33:55,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:33:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-17 14:33:56,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-17 14:33:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-17 14:33:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-17 14:33:56,585 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-17 14:33:56,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:56,585 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-17 14:33:56,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 14:33:56,585 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-17 14:33:56,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 14:33:56,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:56,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:56,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-17 14:33:56,586 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:56,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:56,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-09-17 14:33:56,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:56,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014278468] [2020-09-17 14:33:56,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:33:56,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014278468] [2020-09-17 14:33:56,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:56,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:33:56,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276909584] [2020-09-17 14:33:56,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:33:56,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:56,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:33:56,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:33:56,622 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-17 14:33:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:58,139 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-17 14:33:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:33:58,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 14:33:58,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:58,263 INFO L225 Difference]: With dead ends: 30985 [2020-09-17 14:33:58,263 INFO L226 Difference]: Without dead ends: 30977 [2020-09-17 14:33:58,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:33:58,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-17 14:33:59,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-17 14:33:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-17 14:33:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-17 14:33:59,404 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-17 14:33:59,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:59,404 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-17 14:33:59,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:33:59,404 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-17 14:33:59,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 14:33:59,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:59,405 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:59,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-17 14:33:59,405 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:33:59,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:59,406 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-09-17 14:33:59,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:59,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065845221] [2020-09-17 14:33:59,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:33:59,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065845221] [2020-09-17 14:33:59,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:59,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:33:59,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567007096] [2020-09-17 14:33:59,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:33:59,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:59,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:33:59,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:33:59,453 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-17 14:33:59,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:59,796 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-17 14:33:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:33:59,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 14:33:59,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:59,920 INFO L225 Difference]: With dead ends: 36296 [2020-09-17 14:33:59,921 INFO L226 Difference]: Without dead ends: 36280 [2020-09-17 14:33:59,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:34:00,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-17 14:34:01,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-17 14:34:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-17 14:34:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-17 14:34:01,213 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-17 14:34:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:01,213 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-17 14:34:01,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:34:01,213 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-17 14:34:01,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:34:01,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:01,214 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:01,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-17 14:34:01,214 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:01,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:01,215 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-09-17 14:34:01,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:01,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262822420] [2020-09-17 14:34:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:34:01,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262822420] [2020-09-17 14:34:01,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883892295] [2020-09-17 14:34:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:34:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:01,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:34:01,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:34:01,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:01,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:34:01,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407967696] [2020-09-17 14:34:01,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:34:01,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:01,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:34:01,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:34:01,491 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-09-17 14:34:04,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:04,117 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-17 14:34:04,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:34:04,118 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 14:34:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:04,319 INFO L225 Difference]: With dead ends: 56720 [2020-09-17 14:34:04,319 INFO L226 Difference]: Without dead ends: 56704 [2020-09-17 14:34:04,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:34:05,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-17 14:34:05,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-17 14:34:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-17 14:34:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-17 14:34:05,905 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-17 14:34:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:05,905 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-17 14:34:05,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:34:05,905 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-17 14:34:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:34:05,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:05,906 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:06,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-17 14:34:06,107 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:06,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:06,107 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-09-17 14:34:06,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:06,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790952807] [2020-09-17 14:34:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:06,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790952807] [2020-09-17 14:34:06,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:34:06,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:34:06,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188270211] [2020-09-17 14:34:06,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:34:06,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:06,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:34:06,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:34:06,169 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-17 14:34:06,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:06,917 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-17 14:34:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:34:06,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 14:34:06,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:07,136 INFO L225 Difference]: With dead ends: 58078 [2020-09-17 14:34:07,136 INFO L226 Difference]: Without dead ends: 58061 [2020-09-17 14:34:07,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:34:07,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-17 14:34:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-17 14:34:09,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-17 14:34:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-17 14:34:09,592 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-17 14:34:09,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:09,592 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-17 14:34:09,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:34:09,593 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-17 14:34:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 14:34:09,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:09,593 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:09,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-17 14:34:09,594 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:09,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:09,594 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-09-17 14:34:09,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:09,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193810356] [2020-09-17 14:34:09,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:09,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:34:09,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193810356] [2020-09-17 14:34:09,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:34:09,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:34:09,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324148040] [2020-09-17 14:34:09,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:34:09,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:09,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:34:09,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:34:09,647 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-17 14:34:10,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:10,204 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-17 14:34:10,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:34:10,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 14:34:10,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:10,365 INFO L225 Difference]: With dead ends: 41885 [2020-09-17 14:34:10,365 INFO L226 Difference]: Without dead ends: 41856 [2020-09-17 14:34:10,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:34:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-17 14:34:11,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-17 14:34:11,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-17 14:34:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-17 14:34:11,794 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-17 14:34:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:11,794 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-17 14:34:11,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:34:11,794 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-17 14:34:11,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:34:11,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:11,795 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:11,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-17 14:34:11,795 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:11,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:11,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-09-17 14:34:11,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:11,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746759431] [2020-09-17 14:34:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:34:11,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746759431] [2020-09-17 14:34:11,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044357072] [2020-09-17 14:34:11,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:34:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:11,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:34:11,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:34:12,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:12,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:34:12,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26668479] [2020-09-17 14:34:12,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:34:12,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:12,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:34:12,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:34:12,069 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-09-17 14:34:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:12,930 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-17 14:34:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:34:12,931 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 14:34:12,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:13,169 INFO L225 Difference]: With dead ends: 66831 [2020-09-17 14:34:13,170 INFO L226 Difference]: Without dead ends: 66807 [2020-09-17 14:34:13,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:34:16,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-17 14:34:17,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-17 14:34:17,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-17 14:34:17,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-17 14:34:17,566 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-17 14:34:17,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:17,566 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-17 14:34:17,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:34:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-17 14:34:17,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:34:17,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:17,567 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:17,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-17 14:34:17,768 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:17,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:17,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-09-17 14:34:17,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:17,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632416768] [2020-09-17 14:34:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:17,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632416768] [2020-09-17 14:34:17,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979675036] [2020-09-17 14:34:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:34:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:17,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:34:17,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:18,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:18,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:34:18,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531599628] [2020-09-17 14:34:18,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:34:18,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:18,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:34:18,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:34:18,045 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-09-17 14:34:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:18,916 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-09-17 14:34:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:34:18,916 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 14:34:18,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:19,175 INFO L225 Difference]: With dead ends: 69484 [2020-09-17 14:34:19,175 INFO L226 Difference]: Without dead ends: 69451 [2020-09-17 14:34:19,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:34:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-09-17 14:34:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-09-17 14:34:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-09-17 14:34:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-09-17 14:34:24,580 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-09-17 14:34:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:24,581 INFO L479 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-09-17 14:34:24,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:34:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-09-17 14:34:24,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:34:24,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:24,582 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:24,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:34:24,783 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:24,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-09-17 14:34:24,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:24,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450386740] [2020-09-17 14:34:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:34:24,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450386740] [2020-09-17 14:34:24,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:34:24,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:34:24,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884658498] [2020-09-17 14:34:24,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:34:24,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:24,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:34:24,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:34:24,854 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-09-17 14:34:25,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:25,712 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-09-17 14:34:25,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:34:25,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 14:34:25,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:26,026 INFO L225 Difference]: With dead ends: 70510 [2020-09-17 14:34:26,026 INFO L226 Difference]: Without dead ends: 70477 [2020-09-17 14:34:26,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:34:26,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-09-17 14:34:27,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-09-17 14:34:27,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-09-17 14:34:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-09-17 14:34:28,082 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-09-17 14:34:28,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:28,082 INFO L479 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-09-17 14:34:28,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:34:28,082 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-09-17 14:34:28,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:34:28,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:28,083 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:28,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-17 14:34:28,084 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:28,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:28,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-09-17 14:34:28,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:28,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972347178] [2020-09-17 14:34:28,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:34:28,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972347178] [2020-09-17 14:34:28,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:34:28,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:34:28,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540462412] [2020-09-17 14:34:28,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:34:28,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:28,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:34:28,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:34:28,150 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-09-17 14:34:29,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:29,490 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-17 14:34:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:34:29,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 14:34:29,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:29,779 INFO L225 Difference]: With dead ends: 70096 [2020-09-17 14:34:29,780 INFO L226 Difference]: Without dead ends: 70063 [2020-09-17 14:34:29,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:34:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-17 14:34:31,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-17 14:34:31,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-17 14:34:31,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-17 14:34:31,599 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-17 14:34:31,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:31,599 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-17 14:34:31,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:34:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-17 14:34:31,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:31,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:31,600 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:31,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-17 14:34:31,601 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:31,601 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-09-17 14:34:31,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:31,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441393469] [2020-09-17 14:34:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:34:31,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441393469] [2020-09-17 14:34:31,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088705156] [2020-09-17 14:34:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:34:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:31,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:34:31,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:34:31,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:31,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:34:31,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787454717] [2020-09-17 14:34:31,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:34:31,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:31,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:34:31,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:34:31,952 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-09-17 14:34:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:34,138 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-17 14:34:34,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:34:34,139 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:34:34,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:34,492 INFO L225 Difference]: With dead ends: 100731 [2020-09-17 14:34:34,492 INFO L226 Difference]: Without dead ends: 100715 [2020-09-17 14:34:34,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:34:35,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-17 14:34:36,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-09-17 14:34:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-09-17 14:34:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-09-17 14:34:36,728 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-09-17 14:34:36,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:36,728 INFO L479 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-09-17 14:34:36,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:34:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-09-17 14:34:36,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:36,729 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:36,729 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:36,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-09-17 14:34:36,930 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:36,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:36,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-09-17 14:34:36,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:36,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548811398] [2020-09-17 14:34:36,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:34:37,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548811398] [2020-09-17 14:34:37,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391824153] [2020-09-17 14:34:37,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:34:37,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:34:37,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:34:37,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:34:37,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:34:37,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:37,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:34:37,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339225176] [2020-09-17 14:34:37,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:34:37,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:37,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:34:37,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:34:37,289 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-09-17 14:34:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:39,262 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-09-17 14:34:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:34:39,263 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:34:39,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:39,573 INFO L225 Difference]: With dead ends: 99876 [2020-09-17 14:34:39,573 INFO L226 Difference]: Without dead ends: 99855 [2020-09-17 14:34:39,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:34:40,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-09-17 14:34:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-09-17 14:34:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-17 14:34:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-17 14:34:42,726 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-17 14:34:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:42,726 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-17 14:34:42,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:34:42,726 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-17 14:34:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:42,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:42,727 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:42,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:34:42,928 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:42,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:42,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-09-17 14:34:42,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:42,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536645251] [2020-09-17 14:34:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:43,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536645251] [2020-09-17 14:34:43,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343979451] [2020-09-17 14:34:43,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:34:43,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:34:43,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:34:43,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:34:43,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:43,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:43,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:34:43,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910086804] [2020-09-17 14:34:43,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:34:43,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:43,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:34:43,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:34:43,281 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-09-17 14:34:45,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:45,124 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-09-17 14:34:45,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:34:45,125 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:34:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:45,420 INFO L225 Difference]: With dead ends: 100071 [2020-09-17 14:34:45,420 INFO L226 Difference]: Without dead ends: 100055 [2020-09-17 14:34:45,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:34:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-09-17 14:34:48,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-09-17 14:34:48,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-09-17 14:34:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-09-17 14:34:48,228 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-09-17 14:34:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:48,229 INFO L479 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-09-17 14:34:48,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:34:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-09-17 14:34:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:48,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:48,230 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:48,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-09-17 14:34:48,431 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:48,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:48,431 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-09-17 14:34:48,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:48,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251054576] [2020-09-17 14:34:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:48,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251054576] [2020-09-17 14:34:48,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699450959] [2020-09-17 14:34:48,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:34:48,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:34:48,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:34:48,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:34:48,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:48,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:48,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:34:48,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602007941] [2020-09-17 14:34:48,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:34:48,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:48,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:34:48,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:34:48,778 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-09-17 14:34:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:50,363 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-09-17 14:34:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:34:50,363 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:34:50,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:50,658 INFO L225 Difference]: With dead ends: 99523 [2020-09-17 14:34:50,658 INFO L226 Difference]: Without dead ends: 99502 [2020-09-17 14:34:50,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:34:52,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-09-17 14:34:53,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-09-17 14:34:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-09-17 14:34:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-09-17 14:34:53,289 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-09-17 14:34:53,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:53,290 INFO L479 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-09-17 14:34:53,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:34:53,290 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-09-17 14:34:53,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:53,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:53,291 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:53,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-09-17 14:34:53,492 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:53,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:53,492 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-09-17 14:34:53,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:53,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231938021] [2020-09-17 14:34:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:34:53,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231938021] [2020-09-17 14:34:53,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:34:53,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:34:53,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296340021] [2020-09-17 14:34:53,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:34:53,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:53,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:34:53,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:34:53,579 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-09-17 14:34:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:55,220 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-09-17 14:34:55,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:34:55,220 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 14:34:55,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:55,537 INFO L225 Difference]: With dead ends: 99710 [2020-09-17 14:34:55,537 INFO L226 Difference]: Without dead ends: 99694 [2020-09-17 14:34:55,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:34:57,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-09-17 14:34:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-09-17 14:34:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-09-17 14:34:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-09-17 14:34:58,204 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-09-17 14:34:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:58,204 INFO L479 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-09-17 14:34:58,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:34:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-09-17 14:34:58,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:58,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:58,206 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:58,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-17 14:34:58,206 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:34:58,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:58,206 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-09-17 14:34:58,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:58,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118988844] [2020-09-17 14:34:58,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:34:58,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118988844] [2020-09-17 14:34:58,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:34:58,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:34:58,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665453863] [2020-09-17 14:34:58,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:34:58,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:58,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:34:58,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:34:58,298 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-09-17 14:35:00,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:00,303 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-09-17 14:35:00,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:35:00,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 14:35:00,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:00,599 INFO L225 Difference]: With dead ends: 98863 [2020-09-17 14:35:00,599 INFO L226 Difference]: Without dead ends: 98841 [2020-09-17 14:35:00,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:35:01,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-09-17 14:35:02,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-09-17 14:35:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-09-17 14:35:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-09-17 14:35:02,735 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-09-17 14:35:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:02,736 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-09-17 14:35:02,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:35:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-09-17 14:35:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:35:02,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:02,737 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:02,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-17 14:35:02,737 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:35:02,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:02,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-09-17 14:35:02,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:02,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480877850] [2020-09-17 14:35:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:35:02,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480877850] [2020-09-17 14:35:02,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:35:02,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:35:02,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688479489] [2020-09-17 14:35:02,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:35:02,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:02,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:35:02,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:35:02,793 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-09-17 14:35:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:03,462 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-09-17 14:35:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:35:03,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 14:35:03,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:03,637 INFO L225 Difference]: With dead ends: 46463 [2020-09-17 14:35:03,637 INFO L226 Difference]: Without dead ends: 46417 [2020-09-17 14:35:03,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:35:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-09-17 14:35:04,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-09-17 14:35:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-17 14:35:05,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-17 14:35:05,104 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-17 14:35:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:05,104 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-17 14:35:05,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:35:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-17 14:35:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:35:05,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:05,106 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:05,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-17 14:35:05,106 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:35:05,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:05,106 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-09-17 14:35:05,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:05,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113426417] [2020-09-17 14:35:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:35:05,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113426417] [2020-09-17 14:35:05,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247725785] [2020-09-17 14:35:05,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:05,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:35:05,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:35:05,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:05,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:35:05,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087381295] [2020-09-17 14:35:05,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:35:05,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:05,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:35:05,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:35:05,393 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-09-17 14:35:06,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:06,367 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-17 14:35:06,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:35:06,368 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 14:35:06,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:07,167 INFO L225 Difference]: With dead ends: 75380 [2020-09-17 14:35:07,168 INFO L226 Difference]: Without dead ends: 75344 [2020-09-17 14:35:07,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:35:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-17 14:35:08,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-17 14:35:08,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-17 14:35:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-17 14:35:09,008 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-17 14:35:09,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:09,009 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-17 14:35:09,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:35:09,009 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-17 14:35:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:35:09,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:09,011 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:09,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:09,211 INFO L427 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:35:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:09,212 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-09-17 14:35:09,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:09,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857691554] [2020-09-17 14:35:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:35:09,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857691554] [2020-09-17 14:35:09,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408752495] [2020-09-17 14:35:09,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:09,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:35:09,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:35:09,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:09,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:35:09,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205275818] [2020-09-17 14:35:09,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:35:09,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:09,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:35:09,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:35:09,497 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-09-17 14:35:10,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:10,405 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-09-17 14:35:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:35:10,406 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 14:35:10,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:11,277 INFO L225 Difference]: With dead ends: 79487 [2020-09-17 14:35:11,277 INFO L226 Difference]: Without dead ends: 79445 [2020-09-17 14:35:11,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:35:12,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-09-17 14:35:13,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-09-17 14:35:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-09-17 14:35:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-09-17 14:35:13,216 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-09-17 14:35:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:13,216 INFO L479 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-09-17 14:35:13,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:35:13,216 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-09-17 14:35:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:35:13,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:13,219 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:13,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:13,419 INFO L427 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:35:13,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:13,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-09-17 14:35:13,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:13,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523478828] [2020-09-17 14:35:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:35:13,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523478828] [2020-09-17 14:35:13,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445543708] [2020-09-17 14:35:13,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:13,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:35:13,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:13,677 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:35:13,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:13,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:35:13,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369064084] [2020-09-17 14:35:13,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:35:13,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:13,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:35:13,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:35:13,679 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-09-17 14:35:15,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:15,059 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-09-17 14:35:15,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:35:15,060 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 14:35:15,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:15,349 INFO L225 Difference]: With dead ends: 82728 [2020-09-17 14:35:15,350 INFO L226 Difference]: Without dead ends: 82673 [2020-09-17 14:35:15,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:35:16,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-09-17 14:35:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-09-17 14:35:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-09-17 14:35:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-09-17 14:35:17,405 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-09-17 14:35:17,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:17,405 INFO L479 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-09-17 14:35:17,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:35:17,406 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-09-17 14:35:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:35:17,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:17,408 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:17,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:17,609 INFO L427 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:35:17,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:17,609 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-09-17 14:35:17,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:17,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420326722] [2020-09-17 14:35:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:35:17,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420326722] [2020-09-17 14:35:17,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:35:17,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:35:17,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105076252] [2020-09-17 14:35:17,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:35:17,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:17,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:35:17,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:35:17,682 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-09-17 14:35:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:19,010 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-09-17 14:35:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:35:19,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 14:35:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:19,289 INFO L225 Difference]: With dead ends: 83507 [2020-09-17 14:35:19,289 INFO L226 Difference]: Without dead ends: 83452 [2020-09-17 14:35:19,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:35:20,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-09-17 14:35:21,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-09-17 14:35:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-09-17 14:35:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-09-17 14:35:21,511 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-09-17 14:35:21,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:21,511 INFO L479 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-09-17 14:35:21,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:35:21,511 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-09-17 14:35:21,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:35:21,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:21,513 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:21,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-17 14:35:21,513 INFO L427 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:35:21,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:21,514 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-09-17 14:35:21,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:21,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318282034] [2020-09-17 14:35:21,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:35:21,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318282034] [2020-09-17 14:35:21,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:35:21,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:35:21,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202390445] [2020-09-17 14:35:21,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:35:21,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:21,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:35:21,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:35:21,589 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-09-17 14:35:22,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:22,960 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-09-17 14:35:22,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:35:22,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 14:35:22,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:23,249 INFO L225 Difference]: With dead ends: 83523 [2020-09-17 14:35:23,249 INFO L226 Difference]: Without dead ends: 83468 [2020-09-17 14:35:23,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:35:24,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-09-17 14:35:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-09-17 14:35:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-09-17 14:35:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-09-17 14:35:25,386 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-09-17 14:35:25,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:25,386 INFO L479 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-09-17 14:35:25,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:35:25,386 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-09-17 14:35:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:35:25,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:25,388 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:25,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-17 14:35:25,388 INFO L427 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:35:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:25,389 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-09-17 14:35:25,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:25,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169253792] [2020-09-17 14:35:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:35:25,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169253792] [2020-09-17 14:35:25,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:35:25,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:35:25,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297883620] [2020-09-17 14:35:25,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:35:25,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:25,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:35:25,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:35:25,461 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-09-17 14:35:26,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:26,829 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-09-17 14:35:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:35:26,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 14:35:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:27,126 INFO L225 Difference]: With dead ends: 83918 [2020-09-17 14:35:27,126 INFO L226 Difference]: Without dead ends: 83863 [2020-09-17 14:35:27,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:35:28,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-09-17 14:35:29,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-09-17 14:35:29,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-17 14:35:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-17 14:35:29,194 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-17 14:35:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:29,195 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-17 14:35:29,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:35:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-17 14:35:29,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:35:29,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:29,198 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:29,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-17 14:35:29,198 INFO L427 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:35:29,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:29,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-09-17 14:35:29,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:29,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696796697] [2020-09-17 14:35:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:35:29,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696796697] [2020-09-17 14:35:29,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742025381] [2020-09-17 14:35:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:29,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:35:29,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:35:29,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:29,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:35:29,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561835853] [2020-09-17 14:35:29,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:35:29,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:29,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:35:29,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:35:29,556 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-09-17 14:35:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:32,142 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-17 14:35:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:35:32,143 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:35:32,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:32,545 INFO L225 Difference]: With dead ends: 122892 [2020-09-17 14:35:32,545 INFO L226 Difference]: Without dead ends: 122862 [2020-09-17 14:35:32,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:35:33,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-17 14:35:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-09-17 14:35:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-09-17 14:35:36,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-09-17 14:35:36,167 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-09-17 14:35:36,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:36,167 INFO L479 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-09-17 14:35:36,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:35:36,167 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-09-17 14:35:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:35:36,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:36,170 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:36,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-17 14:35:36,371 INFO L427 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:35:36,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:36,372 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-09-17 14:35:36,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:36,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490205327] [2020-09-17 14:35:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:35:36,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490205327] [2020-09-17 14:35:36,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476987923] [2020-09-17 14:35:36,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:36,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:35:36,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:36,720 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:35:36,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:36,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:35:36,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815565607] [2020-09-17 14:35:36,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:35:36,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:36,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:35:36,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:35:36,722 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-09-17 14:35:38,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:38,756 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-09-17 14:35:38,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:35:38,756 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:35:38,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:39,218 INFO L225 Difference]: With dead ends: 121590 [2020-09-17 14:35:39,218 INFO L226 Difference]: Without dead ends: 121560 [2020-09-17 14:35:39,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:35:40,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-09-17 14:35:42,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-09-17 14:35:42,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-09-17 14:35:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-09-17 14:35:42,762 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-09-17 14:35:42,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:42,762 INFO L479 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-09-17 14:35:42,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:35:42,762 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-09-17 14:35:42,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:35:42,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:42,766 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:42,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:42,973 INFO L427 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:35:42,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:42,974 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-09-17 14:35:42,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:42,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763625819] [2020-09-17 14:35:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:35:43,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763625819] [2020-09-17 14:35:43,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062548853] [2020-09-17 14:35:43,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:43,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:35:43,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:35:43,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:35:43,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:35:43,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:43,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:35:43,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594261487] [2020-09-17 14:35:43,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:35:43,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:43,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:35:43,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:35:43,327 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-09-17 14:35:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:45,204 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-09-17 14:35:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:35:45,204 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:35:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:46,382 INFO L225 Difference]: With dead ends: 120395 [2020-09-17 14:35:46,383 INFO L226 Difference]: Without dead ends: 120362 [2020-09-17 14:35:46,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:35:47,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-09-17 14:35:48,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-09-17 14:35:48,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-09-17 14:35:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-09-17 14:35:48,997 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-09-17 14:35:48,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:48,997 INFO L479 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-09-17 14:35:48,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:35:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-09-17 14:35:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:35:49,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:49,000 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:49,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-17 14:35:49,201 INFO L427 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:35:49,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:49,201 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-09-17 14:35:49,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:49,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036749507] [2020-09-17 14:35:49,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:35:49,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036749507] [2020-09-17 14:35:49,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861888283] [2020-09-17 14:35:49,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:49,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:35:49,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:35:49,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:35:49,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:35:50,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:50,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:35:50,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419451247] [2020-09-17 14:35:50,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:35:50,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:50,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:35:50,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:35:50,073 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-09-17 14:35:52,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:52,027 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-09-17 14:35:52,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:35:52,028 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:35:52,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:52,424 INFO L225 Difference]: With dead ends: 119346 [2020-09-17 14:35:52,425 INFO L226 Difference]: Without dead ends: 119313 [2020-09-17 14:35:52,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:35:53,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-09-17 14:35:55,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-09-17 14:35:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-09-17 14:35:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-09-17 14:35:55,871 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-09-17 14:35:55,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:55,871 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-09-17 14:35:55,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:35:55,872 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-09-17 14:35:55,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:35:55,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:55,874 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:56,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-09-17 14:35:56,075 INFO L427 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:35:56,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:56,076 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-09-17 14:35:56,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:56,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47557181] [2020-09-17 14:35:56,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:35:56,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47557181] [2020-09-17 14:35:56,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545428840] [2020-09-17 14:35:56,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:56,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 14:35:56,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:35:56,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:35:56,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:35:56,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:56,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:35:56,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170569993] [2020-09-17 14:35:56,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:35:56,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:56,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:35:56,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:35:56,441 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-09-17 14:35:58,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:58,628 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-09-17 14:35:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:35:58,629 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:35:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:59,011 INFO L225 Difference]: With dead ends: 119770 [2020-09-17 14:35:59,012 INFO L226 Difference]: Without dead ends: 119740 [2020-09-17 14:35:59,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:00,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-09-17 14:36:02,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-09-17 14:36:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-09-17 14:36:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-09-17 14:36:02,290 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-09-17 14:36:02,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:02,291 INFO L479 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-09-17 14:36:02,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:02,291 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-09-17 14:36:02,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:02,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:02,293 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:02,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-09-17 14:36:02,494 INFO L427 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:36:02,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:02,495 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-09-17 14:36:02,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:02,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447074300] [2020-09-17 14:36:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:36:02,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447074300] [2020-09-17 14:36:02,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764311116] [2020-09-17 14:36:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:02,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:02,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:02,846 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:36:02,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:02,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:02,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110824097] [2020-09-17 14:36:02,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:02,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:02,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:02,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:02,848 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-09-17 14:36:05,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:05,151 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-09-17 14:36:05,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:05,152 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:05,600 INFO L225 Difference]: With dead ends: 121131 [2020-09-17 14:36:05,600 INFO L226 Difference]: Without dead ends: 121101 [2020-09-17 14:36:05,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:06,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-09-17 14:36:08,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-09-17 14:36:08,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-09-17 14:36:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-09-17 14:36:09,006 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-09-17 14:36:09,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:09,006 INFO L479 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-09-17 14:36:09,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:09,006 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-09-17 14:36:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:09,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:09,009 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:09,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-09-17 14:36:09,210 INFO L427 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:36:09,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:09,210 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-09-17 14:36:09,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:09,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567233880] [2020-09-17 14:36:09,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:36:09,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567233880] [2020-09-17 14:36:09,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120866813] [2020-09-17 14:36:09,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:09,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:36:09,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:36:09,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:09,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:36:09,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:09,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:09,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000715651] [2020-09-17 14:36:09,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:09,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:09,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:09,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:09,563 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-09-17 14:36:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:11,492 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-09-17 14:36:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:11,492 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:11,887 INFO L225 Difference]: With dead ends: 120194 [2020-09-17 14:36:11,888 INFO L226 Difference]: Without dead ends: 120154 [2020-09-17 14:36:11,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:13,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-09-17 14:36:15,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-09-17 14:36:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-09-17 14:36:15,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-09-17 14:36:15,182 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-09-17 14:36:15,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:15,182 INFO L479 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-09-17 14:36:15,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-09-17 14:36:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:15,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:15,185 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:15,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:15,385 INFO L427 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:36:15,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:15,386 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-09-17 14:36:15,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:15,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142919521] [2020-09-17 14:36:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:36:15,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142919521] [2020-09-17 14:36:15,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12602112] [2020-09-17 14:36:15,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:15,607 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:36:15,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:36:15,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:15,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:36:15,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:15,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:15,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896561534] [2020-09-17 14:36:15,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:15,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:15,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:15,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:15,753 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-09-17 14:36:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:17,839 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-09-17 14:36:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:17,839 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:18,221 INFO L225 Difference]: With dead ends: 118559 [2020-09-17 14:36:18,221 INFO L226 Difference]: Without dead ends: 118526 [2020-09-17 14:36:18,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:19,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-09-17 14:36:21,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-09-17 14:36:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-09-17 14:36:21,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-09-17 14:36:21,594 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-09-17 14:36:21,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:21,594 INFO L479 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-09-17 14:36:21,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:21,594 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-09-17 14:36:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:21,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:21,597 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:21,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-09-17 14:36:21,806 INFO L427 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:36:21,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:21,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-09-17 14:36:21,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:21,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896130430] [2020-09-17 14:36:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:21,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896130430] [2020-09-17 14:36:21,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709913977] [2020-09-17 14:36:21,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:22,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:36:22,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:36:22,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:22,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:22,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:22,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:22,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961501530] [2020-09-17 14:36:22,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:22,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:22,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:22,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:22,165 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. [2020-09-17 14:36:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:24,025 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-09-17 14:36:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:24,026 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:24,411 INFO L225 Difference]: With dead ends: 118955 [2020-09-17 14:36:24,411 INFO L226 Difference]: Without dead ends: 118925 [2020-09-17 14:36:24,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-09-17 14:36:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-09-17 14:36:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-09-17 14:36:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-09-17 14:36:27,666 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-09-17 14:36:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:27,666 INFO L479 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-09-17 14:36:27,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-09-17 14:36:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:27,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:27,669 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:27,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-09-17 14:36:27,870 INFO L427 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:36:27,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:27,870 INFO L82 PathProgramCache]: Analyzing trace with hash -989383992, now seen corresponding path program 3 times [2020-09-17 14:36:27,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:27,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220034380] [2020-09-17 14:36:27,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:27,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220034380] [2020-09-17 14:36:27,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204056844] [2020-09-17 14:36:27,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:28,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:36:28,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:36:28,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:28,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:28,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:28,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:28,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665921281] [2020-09-17 14:36:28,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:28,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:28,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:28,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:28,673 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 16 states. [2020-09-17 14:36:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:30,693 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-09-17 14:36:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:30,694 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:31,085 INFO L225 Difference]: With dead ends: 117996 [2020-09-17 14:36:31,085 INFO L226 Difference]: Without dead ends: 117966 [2020-09-17 14:36:31,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:32,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-09-17 14:36:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-09-17 14:36:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-09-17 14:36:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-09-17 14:36:34,495 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-09-17 14:36:34,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:34,495 INFO L479 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-09-17 14:36:34,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:34,495 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-09-17 14:36:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:34,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:34,498 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:34,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-09-17 14:36:34,699 INFO L427 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:36:34,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:34,700 INFO L82 PathProgramCache]: Analyzing trace with hash 507575079, now seen corresponding path program 4 times [2020-09-17 14:36:34,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:34,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555947449] [2020-09-17 14:36:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:34,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555947449] [2020-09-17 14:36:34,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220807498] [2020-09-17 14:36:34,800 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:34,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:36:34,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:36:34,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:34,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:35,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:35,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:35,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943516227] [2020-09-17 14:36:35,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:35,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:35,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:35,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:35,075 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 16 states. [2020-09-17 14:36:36,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:36,988 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-09-17 14:36:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:36,989 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:38,112 INFO L225 Difference]: With dead ends: 119076 [2020-09-17 14:36:38,112 INFO L226 Difference]: Without dead ends: 119036 [2020-09-17 14:36:38,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:39,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-09-17 14:36:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-09-17 14:36:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-09-17 14:36:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-09-17 14:36:40,622 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-09-17 14:36:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:40,622 INFO L479 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-09-17 14:36:40,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-09-17 14:36:40,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:40,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:40,625 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:40,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-09-17 14:36:40,826 INFO L427 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:36:40,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:40,826 INFO L82 PathProgramCache]: Analyzing trace with hash 507547272, now seen corresponding path program 4 times [2020-09-17 14:36:40,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:40,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839271467] [2020-09-17 14:36:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:41,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839271467] [2020-09-17 14:36:41,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683315883] [2020-09-17 14:36:41,373 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:41,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:36:41,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:36:41,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:41,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:41,631 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:41,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:41,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:41,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078537259] [2020-09-17 14:36:41,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:41,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:41,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:41,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:41,633 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 16 states. [2020-09-17 14:36:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:43,719 INFO L93 Difference]: Finished difference Result 118020 states and 538147 transitions. [2020-09-17 14:36:43,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:43,720 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:43,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:44,156 INFO L225 Difference]: With dead ends: 118020 [2020-09-17 14:36:44,156 INFO L226 Difference]: Without dead ends: 117980 [2020-09-17 14:36:44,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:45,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117980 states. [2020-09-17 14:36:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117980 to 33387. [2020-09-17 14:36:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33387 states. [2020-09-17 14:36:47,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33387 states to 33387 states and 177693 transitions. [2020-09-17 14:36:47,541 INFO L78 Accepts]: Start accepts. Automaton has 33387 states and 177693 transitions. Word has length 25 [2020-09-17 14:36:47,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:47,541 INFO L479 AbstractCegarLoop]: Abstraction has 33387 states and 177693 transitions. [2020-09-17 14:36:47,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:47,541 INFO L276 IsEmpty]: Start isEmpty. Operand 33387 states and 177693 transitions. [2020-09-17 14:36:47,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:47,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:47,544 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:47,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:47,745 INFO L427 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:36:47,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:47,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1147615783, now seen corresponding path program 5 times [2020-09-17 14:36:47,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:47,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314301126] [2020-09-17 14:36:47,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:36:47,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314301126] [2020-09-17 14:36:47,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:36:47,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:36:47,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872066979] [2020-09-17 14:36:47,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:36:47,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:47,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:36:47,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:36:47,843 INFO L87 Difference]: Start difference. First operand 33387 states and 177693 transitions. Second operand 9 states. [2020-09-17 14:36:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:49,664 INFO L93 Difference]: Finished difference Result 118363 states and 539792 transitions. [2020-09-17 14:36:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:49,665 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:36:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:50,044 INFO L225 Difference]: With dead ends: 118363 [2020-09-17 14:36:50,044 INFO L226 Difference]: Without dead ends: 118333 [2020-09-17 14:36:50,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:36:51,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118333 states. [2020-09-17 14:36:53,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118333 to 32908. [2020-09-17 14:36:53,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32908 states. [2020-09-17 14:36:53,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 175152 transitions. [2020-09-17 14:36:53,225 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 175152 transitions. Word has length 25 [2020-09-17 14:36:53,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:53,225 INFO L479 AbstractCegarLoop]: Abstraction has 32908 states and 175152 transitions. [2020-09-17 14:36:53,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:36:53,225 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 175152 transitions. [2020-09-17 14:36:53,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:53,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:53,229 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:53,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-09-17 14:36:53,229 INFO L427 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:36:53,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:53,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1147599384, now seen corresponding path program 5 times [2020-09-17 14:36:53,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:53,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258603593] [2020-09-17 14:36:53,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:36:53,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258603593] [2020-09-17 14:36:53,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:36:53,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:36:53,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332085154] [2020-09-17 14:36:53,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:36:53,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:53,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:36:53,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:36:53,328 INFO L87 Difference]: Start difference. First operand 32908 states and 175152 transitions. Second operand 9 states. [2020-09-17 14:36:55,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:55,468 INFO L93 Difference]: Finished difference Result 117027 states and 533313 transitions. [2020-09-17 14:36:55,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:55,469 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:36:55,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:55,889 INFO L225 Difference]: With dead ends: 117027 [2020-09-17 14:36:55,889 INFO L226 Difference]: Without dead ends: 116997 [2020-09-17 14:36:55,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:36:57,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116997 states. [2020-09-17 14:36:58,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116997 to 32394. [2020-09-17 14:36:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32394 states. [2020-09-17 14:36:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32394 states to 32394 states and 172458 transitions. [2020-09-17 14:36:59,099 INFO L78 Accepts]: Start accepts. Automaton has 32394 states and 172458 transitions. Word has length 25 [2020-09-17 14:36:59,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:59,099 INFO L479 AbstractCegarLoop]: Abstraction has 32394 states and 172458 transitions. [2020-09-17 14:36:59,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:36:59,099 INFO L276 IsEmpty]: Start isEmpty. Operand 32394 states and 172458 transitions. [2020-09-17 14:36:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:59,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:59,102 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:59,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-09-17 14:36:59,103 INFO L427 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:36:59,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:59,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1136664103, now seen corresponding path program 6 times [2020-09-17 14:36:59,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:59,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534771105] [2020-09-17 14:36:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:36:59,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534771105] [2020-09-17 14:36:59,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:36:59,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:36:59,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231862029] [2020-09-17 14:36:59,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:36:59,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:59,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:36:59,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:36:59,204 INFO L87 Difference]: Start difference. First operand 32394 states and 172458 transitions. Second operand 9 states. [2020-09-17 14:37:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:00,870 INFO L93 Difference]: Finished difference Result 116213 states and 529114 transitions. [2020-09-17 14:37:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:37:00,871 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:37:00,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:01,269 INFO L225 Difference]: With dead ends: 116213 [2020-09-17 14:37:01,270 INFO L226 Difference]: Without dead ends: 116173 [2020-09-17 14:37:01,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:37:02,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116173 states. [2020-09-17 14:37:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116173 to 31530. [2020-09-17 14:37:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31530 states. [2020-09-17 14:37:04,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31530 states to 31530 states and 168028 transitions. [2020-09-17 14:37:04,582 INFO L78 Accepts]: Start accepts. Automaton has 31530 states and 168028 transitions. Word has length 25 [2020-09-17 14:37:04,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:04,582 INFO L479 AbstractCegarLoop]: Abstraction has 31530 states and 168028 transitions. [2020-09-17 14:37:04,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:37:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 31530 states and 168028 transitions. [2020-09-17 14:37:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:37:04,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:04,586 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:04,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-09-17 14:37:04,586 INFO L427 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:37:04,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:04,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1136636296, now seen corresponding path program 5 times [2020-09-17 14:37:04,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:04,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257969192] [2020-09-17 14:37:04,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:37:04,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257969192] [2020-09-17 14:37:04,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:37:04,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:37:04,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284350332] [2020-09-17 14:37:04,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:37:04,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:04,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:37:04,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:37:04,686 INFO L87 Difference]: Start difference. First operand 31530 states and 168028 transitions. Second operand 9 states. [2020-09-17 14:37:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:06,528 INFO L93 Difference]: Finished difference Result 115048 states and 523573 transitions. [2020-09-17 14:37:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:37:06,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:37:06,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:06,906 INFO L225 Difference]: With dead ends: 115048 [2020-09-17 14:37:06,906 INFO L226 Difference]: Without dead ends: 115018 [2020-09-17 14:37:06,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:37:08,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115018 states. [2020-09-17 14:37:09,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115018 to 31199. [2020-09-17 14:37:09,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31199 states. [2020-09-17 14:37:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 166334 transitions. [2020-09-17 14:37:09,965 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 166334 transitions. Word has length 25 [2020-09-17 14:37:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:09,965 INFO L479 AbstractCegarLoop]: Abstraction has 31199 states and 166334 transitions. [2020-09-17 14:37:09,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:37:09,965 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 166334 transitions. [2020-09-17 14:37:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:37:09,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:09,968 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:09,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-09-17 14:37:09,968 INFO L427 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:37:09,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:09,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1120904664, now seen corresponding path program 6 times [2020-09-17 14:37:09,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:09,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245618872] [2020-09-17 14:37:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:10,067 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:37:10,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245618872] [2020-09-17 14:37:10,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:37:10,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:37:10,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937456072] [2020-09-17 14:37:10,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:37:10,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:10,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:37:10,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:37:10,069 INFO L87 Difference]: Start difference. First operand 31199 states and 166334 transitions. Second operand 9 states. [2020-09-17 14:37:12,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:12,196 INFO L93 Difference]: Finished difference Result 114413 states and 520399 transitions. [2020-09-17 14:37:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:37:12,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:37:12,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:12,587 INFO L225 Difference]: With dead ends: 114413 [2020-09-17 14:37:12,587 INFO L226 Difference]: Without dead ends: 114373 [2020-09-17 14:37:12,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:37:13,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114373 states. [2020-09-17 14:37:15,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114373 to 30592. [2020-09-17 14:37:15,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30592 states. [2020-09-17 14:37:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30592 states to 30592 states and 163260 transitions. [2020-09-17 14:37:15,817 INFO L78 Accepts]: Start accepts. Automaton has 30592 states and 163260 transitions. Word has length 25 [2020-09-17 14:37:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:15,818 INFO L479 AbstractCegarLoop]: Abstraction has 30592 states and 163260 transitions. [2020-09-17 14:37:15,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:37:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 30592 states and 163260 transitions. [2020-09-17 14:37:15,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:37:15,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:15,820 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:15,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-09-17 14:37:15,820 INFO L427 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:37:15,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:15,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1120893256, now seen corresponding path program 6 times [2020-09-17 14:37:15,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:15,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560252597] [2020-09-17 14:37:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:37:15,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560252597] [2020-09-17 14:37:15,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:37:15,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:37:15,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275709201] [2020-09-17 14:37:15,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:37:15,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:15,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:37:15,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:37:15,918 INFO L87 Difference]: Start difference. First operand 30592 states and 163260 transitions. Second operand 9 states. [2020-09-17 14:37:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:17,636 INFO L93 Difference]: Finished difference Result 113466 states and 515911 transitions. [2020-09-17 14:37:17,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:37:17,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:37:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:18,049 INFO L225 Difference]: With dead ends: 113466 [2020-09-17 14:37:18,049 INFO L226 Difference]: Without dead ends: 113426 [2020-09-17 14:37:18,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:37:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113426 states. [2020-09-17 14:37:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113426 to 29802. [2020-09-17 14:37:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-09-17 14:37:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 159321 transitions. [2020-09-17 14:37:21,143 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 159321 transitions. Word has length 25 [2020-09-17 14:37:21,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:21,144 INFO L479 AbstractCegarLoop]: Abstraction has 29802 states and 159321 transitions. [2020-09-17 14:37:21,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:37:21,144 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 159321 transitions. [2020-09-17 14:37:21,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:37:21,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:21,146 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:21,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-09-17 14:37:21,146 INFO L427 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:37:21,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:21,147 INFO L82 PathProgramCache]: Analyzing trace with hash 123792641, now seen corresponding path program 1 times [2020-09-17 14:37:21,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:21,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622322372] [2020-09-17 14:37:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 14:37:21,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622322372] [2020-09-17 14:37:21,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:37:21,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:37:21,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719774387] [2020-09-17 14:37:21,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:37:21,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:21,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:37:21,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:37:21,203 INFO L87 Difference]: Start difference. First operand 29802 states and 159321 transitions. Second operand 5 states. [2020-09-17 14:37:21,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:21,710 INFO L93 Difference]: Finished difference Result 53165 states and 272731 transitions. [2020-09-17 14:37:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:37:21,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-17 14:37:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:21,916 INFO L225 Difference]: With dead ends: 53165 [2020-09-17 14:37:21,916 INFO L226 Difference]: Without dead ends: 53102 [2020-09-17 14:37:21,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:37:22,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53102 states. [2020-09-17 14:37:23,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53102 to 37675. [2020-09-17 14:37:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-09-17 14:37:24,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-09-17 14:37:24,042 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-09-17 14:37:24,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:24,043 INFO L479 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-09-17 14:37:24,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:37:24,043 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-09-17 14:37:24,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:37:24,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:24,046 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:24,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-09-17 14:37:24,047 INFO L427 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:37:24,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:24,047 INFO L82 PathProgramCache]: Analyzing trace with hash -480284107, now seen corresponding path program 1 times [2020-09-17 14:37:24,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:24,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83148819] [2020-09-17 14:37:24,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:37:24,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83148819] [2020-09-17 14:37:24,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568974145] [2020-09-17 14:37:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:37:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:24,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:37:24,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:37:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:37:24,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:37:24,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:37:24,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653362401] [2020-09-17 14:37:24,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:37:24,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:24,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:37:24,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:37:24,499 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 20 states. [2020-09-17 14:37:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:28,830 INFO L93 Difference]: Finished difference Result 186148 states and 815009 transitions. [2020-09-17 14:37:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:37:28,831 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:37:28,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:30,382 INFO L225 Difference]: With dead ends: 186148 [2020-09-17 14:37:30,382 INFO L226 Difference]: Without dead ends: 186130 [2020-09-17 14:37:30,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:37:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186130 states. [2020-09-17 14:37:38,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186130 to 37780. [2020-09-17 14:37:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37780 states. [2020-09-17 14:37:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37780 states to 37780 states and 201508 transitions. [2020-09-17 14:37:38,204 INFO L78 Accepts]: Start accepts. Automaton has 37780 states and 201508 transitions. Word has length 27 [2020-09-17 14:37:38,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:38,205 INFO L479 AbstractCegarLoop]: Abstraction has 37780 states and 201508 transitions. [2020-09-17 14:37:38,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:37:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 37780 states and 201508 transitions. [2020-09-17 14:37:38,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:37:38,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:38,210 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:38,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-09-17 14:37:38,424 INFO L427 AbstractCegarLoop]: === Iteration 44 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:37:38,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:38,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1807002315, now seen corresponding path program 2 times [2020-09-17 14:37:38,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:38,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752890122] [2020-09-17 14:37:38,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:37:38,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752890122] [2020-09-17 14:37:38,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850294150] [2020-09-17 14:37:38,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:37:38,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:37:38,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:37:38,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:37:38,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:37:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:37:38,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:37:38,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:37:38,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475705831] [2020-09-17 14:37:38,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:37:38,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:38,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:37:38,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:37:38,883 INFO L87 Difference]: Start difference. First operand 37780 states and 201508 transitions. Second operand 20 states. [2020-09-17 14:37:43,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:43,902 INFO L93 Difference]: Finished difference Result 185731 states and 813247 transitions. [2020-09-17 14:37:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:37:43,903 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:37:43,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:44,470 INFO L225 Difference]: With dead ends: 185731 [2020-09-17 14:37:44,470 INFO L226 Difference]: Without dead ends: 185707 [2020-09-17 14:37:44,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:37:46,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185707 states. [2020-09-17 14:37:52,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185707 to 37506. [2020-09-17 14:37:52,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37506 states. [2020-09-17 14:37:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 200034 transitions. [2020-09-17 14:37:52,214 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 200034 transitions. Word has length 27 [2020-09-17 14:37:52,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:52,215 INFO L479 AbstractCegarLoop]: Abstraction has 37506 states and 200034 transitions. [2020-09-17 14:37:52,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:37:52,215 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 200034 transitions. [2020-09-17 14:37:52,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:37:52,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:52,219 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:52,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-09-17 14:37:52,420 INFO L427 AbstractCegarLoop]: === Iteration 45 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:37:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:52,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2078895349, now seen corresponding path program 3 times [2020-09-17 14:37:52,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:52,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888398939] [2020-09-17 14:37:52,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:37:52,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888398939] [2020-09-17 14:37:52,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606128324] [2020-09-17 14:37:52,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:37:52,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-17 14:37:52,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:37:52,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:37:52,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:37:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:37:52,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:37:52,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:37:52,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203757527] [2020-09-17 14:37:52,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:37:52,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:52,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:37:52,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:37:52,890 INFO L87 Difference]: Start difference. First operand 37506 states and 200034 transitions. Second operand 20 states. [2020-09-17 14:37:57,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:57,716 INFO L93 Difference]: Finished difference Result 185071 states and 810108 transitions. [2020-09-17 14:37:57,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:37:57,717 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:37:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:58,312 INFO L225 Difference]: With dead ends: 185071 [2020-09-17 14:37:58,313 INFO L226 Difference]: Without dead ends: 185053 [2020-09-17 14:37:58,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1876 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:38:00,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185053 states. [2020-09-17 14:38:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185053 to 37607. [2020-09-17 14:38:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37607 states. [2020-09-17 14:38:07,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37607 states to 37607 states and 200519 transitions. [2020-09-17 14:38:07,476 INFO L78 Accepts]: Start accepts. Automaton has 37607 states and 200519 transitions. Word has length 27 [2020-09-17 14:38:07,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:38:07,476 INFO L479 AbstractCegarLoop]: Abstraction has 37607 states and 200519 transitions. [2020-09-17 14:38:07,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:38:07,476 INFO L276 IsEmpty]: Start isEmpty. Operand 37607 states and 200519 transitions. [2020-09-17 14:38:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:38:07,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:38:07,480 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:38:07,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:07,680 INFO L427 AbstractCegarLoop]: === Iteration 46 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:38:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:38:07,681 INFO L82 PathProgramCache]: Analyzing trace with hash -651887627, now seen corresponding path program 4 times [2020-09-17 14:38:07,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:38:07,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911531606] [2020-09-17 14:38:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:38:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:38:07,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911531606] [2020-09-17 14:38:07,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558828923] [2020-09-17 14:38:07,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:07,932 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:38:07,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:38:07,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:38:07,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:38:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:38:08,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:38:08,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:38:08,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13186666] [2020-09-17 14:38:08,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:38:08,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:38:08,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:38:08,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:38:08,135 INFO L87 Difference]: Start difference. First operand 37607 states and 200519 transitions. Second operand 20 states. [2020-09-17 14:38:12,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:38:12,550 INFO L93 Difference]: Finished difference Result 184772 states and 808751 transitions. [2020-09-17 14:38:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:38:12,551 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:38:12,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:38:13,121 INFO L225 Difference]: With dead ends: 184772 [2020-09-17 14:38:13,121 INFO L226 Difference]: Without dead ends: 184748 [2020-09-17 14:38:13,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:38:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184748 states. [2020-09-17 14:38:20,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184748 to 37341. [2020-09-17 14:38:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37341 states. [2020-09-17 14:38:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37341 states to 37341 states and 199065 transitions. [2020-09-17 14:38:21,093 INFO L78 Accepts]: Start accepts. Automaton has 37341 states and 199065 transitions. Word has length 27 [2020-09-17 14:38:21,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:38:21,093 INFO L479 AbstractCegarLoop]: Abstraction has 37341 states and 199065 transitions. [2020-09-17 14:38:21,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:38:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 37341 states and 199065 transitions. [2020-09-17 14:38:21,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:38:21,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:38:21,097 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:38:21,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:21,298 INFO L427 AbstractCegarLoop]: === Iteration 47 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:38:21,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:38:21,299 INFO L82 PathProgramCache]: Analyzing trace with hash -11846923, now seen corresponding path program 5 times [2020-09-17 14:38:21,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:38:21,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804134977] [2020-09-17 14:38:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:38:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:38:21,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804134977] [2020-09-17 14:38:21,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979565077] [2020-09-17 14:38:21,434 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:21,545 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 14:38:21,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:38:21,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:38:21,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:38:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:38:21,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:38:21,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:38:21,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452430927] [2020-09-17 14:38:21,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:38:21,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:38:21,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:38:21,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:38:21,778 INFO L87 Difference]: Start difference. First operand 37341 states and 199065 transitions. Second operand 20 states. [2020-09-17 14:38:27,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:38:27,154 INFO L93 Difference]: Finished difference Result 184120 states and 805632 transitions. [2020-09-17 14:38:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:38:27,155 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:38:27,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:38:27,712 INFO L225 Difference]: With dead ends: 184120 [2020-09-17 14:38:27,712 INFO L226 Difference]: Without dead ends: 184102 [2020-09-17 14:38:27,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:38:29,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184102 states. [2020-09-17 14:38:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184102 to 37438. [2020-09-17 14:38:32,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37438 states. [2020-09-17 14:38:32,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37438 states to 37438 states and 199538 transitions. [2020-09-17 14:38:32,407 INFO L78 Accepts]: Start accepts. Automaton has 37438 states and 199538 transitions. Word has length 27 [2020-09-17 14:38:32,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:38:32,407 INFO L479 AbstractCegarLoop]: Abstraction has 37438 states and 199538 transitions. [2020-09-17 14:38:32,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:38:32,407 INFO L276 IsEmpty]: Start isEmpty. Operand 37438 states and 199538 transitions. [2020-09-17 14:38:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:38:32,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:38:32,411 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:38:32,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:32,612 INFO L427 AbstractCegarLoop]: === Iteration 48 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:38:32,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:38:32,613 INFO L82 PathProgramCache]: Analyzing trace with hash -22798603, now seen corresponding path program 6 times [2020-09-17 14:38:32,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:38:32,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031272865] [2020-09-17 14:38:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:38:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:38:32,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031272865] [2020-09-17 14:38:32,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097384862] [2020-09-17 14:38:32,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:32,876 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-09-17 14:38:32,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:38:32,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:38:32,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:38:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:38:33,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:38:33,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:38:33,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335673140] [2020-09-17 14:38:33,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:38:33,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:38:33,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:38:33,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:38:33,089 INFO L87 Difference]: Start difference. First operand 37438 states and 199538 transitions. Second operand 20 states. [2020-09-17 14:38:38,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:38:38,057 INFO L93 Difference]: Finished difference Result 183711 states and 803890 transitions. [2020-09-17 14:38:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:38:38,058 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:38:38,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:38:38,594 INFO L225 Difference]: With dead ends: 183711 [2020-09-17 14:38:38,594 INFO L226 Difference]: Without dead ends: 183683 [2020-09-17 14:38:38,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1858 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:38:41,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183683 states. [2020-09-17 14:38:43,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183683 to 37176. [2020-09-17 14:38:43,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-09-17 14:38:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 198103 transitions. [2020-09-17 14:38:44,158 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 198103 transitions. Word has length 27 [2020-09-17 14:38:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:38:44,159 INFO L479 AbstractCegarLoop]: Abstraction has 37176 states and 198103 transitions. [2020-09-17 14:38:44,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:38:44,159 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 198103 transitions. [2020-09-17 14:38:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:38:44,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:38:44,163 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:38:44,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-09-17 14:38:44,364 INFO L427 AbstractCegarLoop]: === Iteration 49 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:38:44,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:38:44,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1035670065, now seen corresponding path program 1 times [2020-09-17 14:38:44,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:38:44,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482676969] [2020-09-17 14:38:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:38:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 14:38:44,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482676969] [2020-09-17 14:38:44,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024672663] [2020-09-17 14:38:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:44,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:38:44,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:38:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 14:38:44,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:38:44,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:38:44,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900378718] [2020-09-17 14:38:44,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:38:44,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:38:44,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:38:44,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:38:44,663 INFO L87 Difference]: Start difference. First operand 37176 states and 198103 transitions. Second operand 12 states. [2020-09-17 14:38:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:38:45,641 INFO L93 Difference]: Finished difference Result 82213 states and 399726 transitions. [2020-09-17 14:38:45,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:38:45,642 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 14:38:45,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:38:45,895 INFO L225 Difference]: With dead ends: 82213 [2020-09-17 14:38:45,895 INFO L226 Difference]: Without dead ends: 82165 [2020-09-17 14:38:45,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:38:47,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-09-17 14:38:48,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 38439. [2020-09-17 14:38:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-09-17 14:38:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-09-17 14:38:48,648 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-09-17 14:38:48,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:38:48,648 INFO L479 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-09-17 14:38:48,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:38:48,649 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-09-17 14:38:48,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:38:48,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:38:48,653 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:38:48,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-09-17 14:38:48,854 INFO L427 AbstractCegarLoop]: === Iteration 50 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:38:48,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:38:48,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1753210507, now seen corresponding path program 7 times [2020-09-17 14:38:48,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:38:48,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599134346] [2020-09-17 14:38:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:38:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:38:48,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599134346] [2020-09-17 14:38:48,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700542183] [2020-09-17 14:38:48,998 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:49,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:38:49,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:38:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:38:49,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:38:49,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:38:49,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134555979] [2020-09-17 14:38:49,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:38:49,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:38:49,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:38:49,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:38:49,373 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 20 states. [2020-09-17 14:38:50,791 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-09-17 14:38:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:38:54,027 INFO L93 Difference]: Finished difference Result 183266 states and 800955 transitions. [2020-09-17 14:38:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:38:54,028 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:38:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:38:55,488 INFO L225 Difference]: With dead ends: 183266 [2020-09-17 14:38:55,488 INFO L226 Difference]: Without dead ends: 183248 [2020-09-17 14:38:55,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1878 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:38:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2020-09-17 14:39:02,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 38274. [2020-09-17 14:39:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38274 states. [2020-09-17 14:39:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 203647 transitions. [2020-09-17 14:39:02,732 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 203647 transitions. Word has length 27 [2020-09-17 14:39:02,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:39:02,732 INFO L479 AbstractCegarLoop]: Abstraction has 38274 states and 203647 transitions. [2020-09-17 14:39:02,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:39:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 203647 transitions. [2020-09-17 14:39:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:39:02,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:39:02,736 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:39:02,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-09-17 14:39:02,937 INFO L427 AbstractCegarLoop]: === Iteration 51 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:39:02,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:39:02,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1215038581, now seen corresponding path program 8 times [2020-09-17 14:39:02,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:39:02,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465504656] [2020-09-17 14:39:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:39:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:39:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:39:03,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465504656] [2020-09-17 14:39:03,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594777699] [2020-09-17 14:39:03,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:39:03,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:39:03,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:39:03,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:39:03,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:39:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:39:03,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:39:03,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:39:03,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937820328] [2020-09-17 14:39:03,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:39:03,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:39:03,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:39:03,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:39:03,396 INFO L87 Difference]: Start difference. First operand 38274 states and 203647 transitions. Second operand 20 states. [2020-09-17 14:39:09,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:39:09,051 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-09-17 14:39:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:39:09,052 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:39:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:39:09,605 INFO L225 Difference]: With dead ends: 182849 [2020-09-17 14:39:09,605 INFO L226 Difference]: Without dead ends: 182825 [2020-09-17 14:39:09,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:39:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-09-17 14:39:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37880. [2020-09-17 14:39:17,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37880 states. [2020-09-17 14:39:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37880 states to 37880 states and 201614 transitions. [2020-09-17 14:39:17,715 INFO L78 Accepts]: Start accepts. Automaton has 37880 states and 201614 transitions. Word has length 27 [2020-09-17 14:39:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:39:17,715 INFO L479 AbstractCegarLoop]: Abstraction has 37880 states and 201614 transitions. [2020-09-17 14:39:17,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:39:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 37880 states and 201614 transitions. [2020-09-17 14:39:17,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:39:17,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:39:17,720 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:39:17,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-09-17 14:39:17,921 INFO L427 AbstractCegarLoop]: === Iteration 52 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:39:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:39:17,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1641326347, now seen corresponding path program 9 times [2020-09-17 14:39:17,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:39:17,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573542392] [2020-09-17 14:39:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:39:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:39:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:39:18,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573542392] [2020-09-17 14:39:18,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102099210] [2020-09-17 14:39:18,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:39:18,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 14:39:18,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:39:18,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:39:18,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:39:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:39:18,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:39:18,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:39:18,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684367405] [2020-09-17 14:39:18,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:39:18,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:39:18,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:39:18,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:39:18,396 INFO L87 Difference]: Start difference. First operand 37880 states and 201614 transitions. Second operand 20 states. [2020-09-17 14:39:24,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:39:24,134 INFO L93 Difference]: Finished difference Result 183813 states and 803277 transitions. [2020-09-17 14:39:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:39:24,135 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:39:24,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:39:24,776 INFO L225 Difference]: With dead ends: 183813 [2020-09-17 14:39:24,776 INFO L226 Difference]: Without dead ends: 183795 [2020-09-17 14:39:24,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:39:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183795 states. [2020-09-17 14:39:29,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183795 to 37981. [2020-09-17 14:39:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-09-17 14:39:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202099 transitions. [2020-09-17 14:39:30,341 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202099 transitions. Word has length 27 [2020-09-17 14:39:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:39:30,342 INFO L479 AbstractCegarLoop]: Abstraction has 37981 states and 202099 transitions. [2020-09-17 14:39:30,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:39:30,342 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202099 transitions. [2020-09-17 14:39:30,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:39:30,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:39:30,347 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:39:30,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-09-17 14:39:30,556 INFO L427 AbstractCegarLoop]: === Iteration 53 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:39:30,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:39:30,557 INFO L82 PathProgramCache]: Analyzing trace with hash -144395083, now seen corresponding path program 10 times [2020-09-17 14:39:30,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:39:30,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11936648] [2020-09-17 14:39:30,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:39:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:39:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:39:30,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11936648] [2020-09-17 14:39:30,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382011534] [2020-09-17 14:39:30,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:39:30,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:39:30,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:39:30,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:39:30,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:39:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:39:31,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:39:31,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:39:31,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548736262] [2020-09-17 14:39:31,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:39:31,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:39:31,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:39:31,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:39:31,042 INFO L87 Difference]: Start difference. First operand 37981 states and 202099 transitions. Second operand 20 states. [2020-09-17 14:39:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:39:39,714 INFO L93 Difference]: Finished difference Result 184566 states and 806586 transitions. [2020-09-17 14:39:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:39:39,715 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:39:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:39:40,365 INFO L225 Difference]: With dead ends: 184566 [2020-09-17 14:39:40,365 INFO L226 Difference]: Without dead ends: 184542 [2020-09-17 14:39:40,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:39:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184542 states. [2020-09-17 14:39:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184542 to 37715. [2020-09-17 14:39:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2020-09-17 14:39:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 200645 transitions. [2020-09-17 14:39:44,745 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 200645 transitions. Word has length 27 [2020-09-17 14:39:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:39:44,746 INFO L479 AbstractCegarLoop]: Abstraction has 37715 states and 200645 transitions. [2020-09-17 14:39:44,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:39:44,746 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 200645 transitions. [2020-09-17 14:39:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:39:44,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:39:44,751 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:39:44,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:39:44,964 INFO L427 AbstractCegarLoop]: === Iteration 54 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:39:44,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:39:44,965 INFO L82 PathProgramCache]: Analyzing trace with hash 484693941, now seen corresponding path program 11 times [2020-09-17 14:39:44,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:39:44,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377903056] [2020-09-17 14:39:44,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:39:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:39:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:39:45,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377903056] [2020-09-17 14:39:45,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618969705] [2020-09-17 14:39:45,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:39:45,211 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 14:39:45,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:39:45,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:39:45,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:39:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:39:45,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:39:45,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:39:45,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466964832] [2020-09-17 14:39:45,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:39:45,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:39:45,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:39:45,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:39:45,444 INFO L87 Difference]: Start difference. First operand 37715 states and 200645 transitions. Second operand 20 states. [2020-09-17 14:39:51,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:39:51,100 INFO L93 Difference]: Finished difference Result 183914 states and 803467 transitions. [2020-09-17 14:39:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:39:51,102 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:39:51,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:39:51,765 INFO L225 Difference]: With dead ends: 183914 [2020-09-17 14:39:51,765 INFO L226 Difference]: Without dead ends: 183896 [2020-09-17 14:39:51,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1861 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:39:54,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183896 states. [2020-09-17 14:39:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183896 to 37812. [2020-09-17 14:39:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37812 states. [2020-09-17 14:40:00,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37812 states to 37812 states and 201118 transitions. [2020-09-17 14:40:00,041 INFO L78 Accepts]: Start accepts. Automaton has 37812 states and 201118 transitions. Word has length 27 [2020-09-17 14:40:00,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:40:00,041 INFO L479 AbstractCegarLoop]: Abstraction has 37812 states and 201118 transitions. [2020-09-17 14:40:00,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:40:00,042 INFO L276 IsEmpty]: Start isEmpty. Operand 37812 states and 201118 transitions. [2020-09-17 14:40:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:40:00,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:40:00,046 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:40:00,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-09-17 14:40:00,247 INFO L427 AbstractCegarLoop]: === Iteration 55 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:40:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:40:00,248 INFO L82 PathProgramCache]: Analyzing trace with hash 468950901, now seen corresponding path program 12 times [2020-09-17 14:40:00,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:40:00,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128917626] [2020-09-17 14:40:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:40:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:00,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:40:00,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128917626] [2020-09-17 14:40:00,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449410100] [2020-09-17 14:40:00,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:00,508 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-09-17 14:40:00,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:40:00,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:40:00,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:40:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:40:00,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:40:00,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:40:00,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109563316] [2020-09-17 14:40:00,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:40:00,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:40:00,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:40:00,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:40:00,734 INFO L87 Difference]: Start difference. First operand 37812 states and 201118 transitions. Second operand 20 states. [2020-09-17 14:40:07,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:40:07,043 INFO L93 Difference]: Finished difference Result 182421 states and 796955 transitions. [2020-09-17 14:40:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:40:07,044 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:40:07,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:40:07,670 INFO L225 Difference]: With dead ends: 182421 [2020-09-17 14:40:07,670 INFO L226 Difference]: Without dead ends: 182393 [2020-09-17 14:40:07,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:40:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182393 states. [2020-09-17 14:40:12,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182393 to 37550. [2020-09-17 14:40:12,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37550 states. [2020-09-17 14:40:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37550 states to 37550 states and 199683 transitions. [2020-09-17 14:40:16,918 INFO L78 Accepts]: Start accepts. Automaton has 37550 states and 199683 transitions. Word has length 27 [2020-09-17 14:40:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:40:16,918 INFO L479 AbstractCegarLoop]: Abstraction has 37550 states and 199683 transitions. [2020-09-17 14:40:16,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:40:16,918 INFO L276 IsEmpty]: Start isEmpty. Operand 37550 states and 199683 transitions. [2020-09-17 14:40:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:40:16,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:40:16,923 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:40:17,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-09-17 14:40:17,124 INFO L427 AbstractCegarLoop]: === Iteration 56 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:40:17,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:40:17,124 INFO L82 PathProgramCache]: Analyzing trace with hash -528149714, now seen corresponding path program 1 times [2020-09-17 14:40:17,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:40:17,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405604875] [2020-09-17 14:40:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:40:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-17 14:40:17,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405604875] [2020-09-17 14:40:17,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531803290] [2020-09-17 14:40:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:17,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:40:17,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:40:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-17 14:40:17,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:40:17,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:40:17,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483904776] [2020-09-17 14:40:17,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:40:17,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:40:17,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:40:17,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:40:17,417 INFO L87 Difference]: Start difference. First operand 37550 states and 199683 transitions. Second operand 12 states. [2020-09-17 14:40:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:40:18,558 INFO L93 Difference]: Finished difference Result 86095 states and 418282 transitions. [2020-09-17 14:40:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:40:18,560 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 14:40:18,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:40:18,889 INFO L225 Difference]: With dead ends: 86095 [2020-09-17 14:40:18,889 INFO L226 Difference]: Without dead ends: 86043 [2020-09-17 14:40:18,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:40:19,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2020-09-17 14:40:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 39046. [2020-09-17 14:40:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-09-17 14:40:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207545 transitions. [2020-09-17 14:40:21,726 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207545 transitions. Word has length 27 [2020-09-17 14:40:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:40:21,726 INFO L479 AbstractCegarLoop]: Abstraction has 39046 states and 207545 transitions. [2020-09-17 14:40:21,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:40:21,726 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207545 transitions. [2020-09-17 14:40:21,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:40:21,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:40:21,730 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:40:21,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:21,931 INFO L427 AbstractCegarLoop]: === Iteration 57 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:40:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:40:21,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1008837557, now seen corresponding path program 13 times [2020-09-17 14:40:21,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:40:21,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832672164] [2020-09-17 14:40:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:40:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:22,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832672164] [2020-09-17 14:40:22,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573902615] [2020-09-17 14:40:22,075 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:22,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:40:22,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:40:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:22,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:40:22,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:40:22,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281517267] [2020-09-17 14:40:22,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:40:22,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:40:22,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:40:22,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:40:22,432 INFO L87 Difference]: Start difference. First operand 39046 states and 207545 transitions. Second operand 20 states. [2020-09-17 14:40:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:40:27,790 INFO L93 Difference]: Finished difference Result 182203 states and 795088 transitions. [2020-09-17 14:40:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:40:27,791 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:40:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:40:28,452 INFO L225 Difference]: With dead ends: 182203 [2020-09-17 14:40:28,452 INFO L226 Difference]: Without dead ends: 182185 [2020-09-17 14:40:28,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:40:30,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2020-09-17 14:40:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 38881. [2020-09-17 14:40:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38881 states. [2020-09-17 14:40:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38881 states to 38881 states and 206740 transitions. [2020-09-17 14:40:36,181 INFO L78 Accepts]: Start accepts. Automaton has 38881 states and 206740 transitions. Word has length 27 [2020-09-17 14:40:36,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:40:36,181 INFO L479 AbstractCegarLoop]: Abstraction has 38881 states and 206740 transitions. [2020-09-17 14:40:36,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:40:36,182 INFO L276 IsEmpty]: Start isEmpty. Operand 38881 states and 206740 transitions. [2020-09-17 14:40:36,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:40:36,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:40:36,187 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:40:36,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:36,402 INFO L427 AbstractCegarLoop]: === Iteration 58 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:40:36,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:40:36,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1789198475, now seen corresponding path program 14 times [2020-09-17 14:40:36,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:40:36,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5735610] [2020-09-17 14:40:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:40:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:36,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5735610] [2020-09-17 14:40:36,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853894066] [2020-09-17 14:40:36,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:36,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:40:36,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:40:36,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:40:36,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:40:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:36,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:40:36,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:40:36,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089031424] [2020-09-17 14:40:36,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:40:36,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:40:36,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:40:36,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:40:36,917 INFO L87 Difference]: Start difference. First operand 38881 states and 206740 transitions. Second operand 20 states. [2020-09-17 14:40:42,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:40:42,253 INFO L93 Difference]: Finished difference Result 182814 states and 797848 transitions. [2020-09-17 14:40:42,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:40:42,254 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:40:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:40:42,806 INFO L225 Difference]: With dead ends: 182814 [2020-09-17 14:40:42,806 INFO L226 Difference]: Without dead ends: 182790 [2020-09-17 14:40:42,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:40:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182790 states. [2020-09-17 14:40:47,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182790 to 38491. [2020-09-17 14:40:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38491 states. [2020-09-17 14:40:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 204715 transitions. [2020-09-17 14:40:47,525 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 204715 transitions. Word has length 27 [2020-09-17 14:40:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:40:47,525 INFO L479 AbstractCegarLoop]: Abstraction has 38491 states and 204715 transitions. [2020-09-17 14:40:47,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:40:47,526 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 204715 transitions. [2020-09-17 14:40:47,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:40:47,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:40:47,532 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:40:47,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:47,733 INFO L427 AbstractCegarLoop]: === Iteration 59 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:40:47,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:40:47,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1120567157, now seen corresponding path program 15 times [2020-09-17 14:40:47,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:40:47,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134996618] [2020-09-17 14:40:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:40:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:47,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134996618] [2020-09-17 14:40:47,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418037346] [2020-09-17 14:40:47,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:47,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:40:47,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:40:47,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:40:47,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:40:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:48,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:40:48,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:40:48,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859127204] [2020-09-17 14:40:48,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:40:48,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:40:48,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:40:48,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:40:48,233 INFO L87 Difference]: Start difference. First operand 38491 states and 204715 transitions. Second operand 20 states. [2020-09-17 14:40:53,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:40:53,443 INFO L93 Difference]: Finished difference Result 181233 states and 790722 transitions. [2020-09-17 14:40:53,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:40:53,444 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:40:53,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:40:53,983 INFO L225 Difference]: With dead ends: 181233 [2020-09-17 14:40:53,983 INFO L226 Difference]: Without dead ends: 181215 [2020-09-17 14:40:53,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:40:56,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181215 states. [2020-09-17 14:40:58,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181215 to 38192. [2020-09-17 14:40:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38192 states. [2020-09-17 14:40:59,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 203358 transitions. [2020-09-17 14:40:59,044 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 203358 transitions. Word has length 27 [2020-09-17 14:40:59,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:40:59,044 INFO L479 AbstractCegarLoop]: Abstraction has 38192 states and 203358 transitions. [2020-09-17 14:40:59,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:40:59,044 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 203358 transitions. [2020-09-17 14:40:59,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:40:59,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:40:59,049 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:40:59,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-09-17 14:40:59,250 INFO L427 AbstractCegarLoop]: === Iteration 60 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:40:59,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:40:59,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1610215819, now seen corresponding path program 16 times [2020-09-17 14:40:59,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:40:59,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046050639] [2020-09-17 14:40:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:40:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:59,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046050639] [2020-09-17 14:40:59,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930576540] [2020-09-17 14:40:59,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:59,507 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:40:59,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:40:59,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:40:59,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:40:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:59,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:40:59,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:40:59,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273908583] [2020-09-17 14:40:59,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:40:59,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:40:59,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:40:59,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:40:59,716 INFO L87 Difference]: Start difference. First operand 38192 states and 203358 transitions. Second operand 20 states. [2020-09-17 14:41:08,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:41:08,288 INFO L93 Difference]: Finished difference Result 181989 states and 794023 transitions. [2020-09-17 14:41:08,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:41:08,289 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:41:08,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:41:08,833 INFO L225 Difference]: With dead ends: 181989 [2020-09-17 14:41:08,833 INFO L226 Difference]: Without dead ends: 181965 [2020-09-17 14:41:08,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:41:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181965 states. [2020-09-17 14:41:12,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181965 to 37802. [2020-09-17 14:41:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37802 states. [2020-09-17 14:41:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37802 states to 37802 states and 201333 transitions. [2020-09-17 14:41:12,982 INFO L78 Accepts]: Start accepts. Automaton has 37802 states and 201333 transitions. Word has length 27 [2020-09-17 14:41:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:41:12,982 INFO L479 AbstractCegarLoop]: Abstraction has 37802 states and 201333 transitions. [2020-09-17 14:41:12,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:41:12,983 INFO L276 IsEmpty]: Start isEmpty. Operand 37802 states and 201333 transitions. [2020-09-17 14:41:12,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:41:12,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:41:12,987 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:41:13,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-09-17 14:41:13,188 INFO L427 AbstractCegarLoop]: === Iteration 61 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:41:13,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:41:13,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1846620555, now seen corresponding path program 17 times [2020-09-17 14:41:13,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:41:13,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958606397] [2020-09-17 14:41:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:41:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:41:13,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958606397] [2020-09-17 14:41:13,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376923106] [2020-09-17 14:41:13,339 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:41:13,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 14:41:13,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:41:13,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:41:13,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:41:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:41:13,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:41:13,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:41:13,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63435078] [2020-09-17 14:41:13,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:41:13,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:41:13,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:41:13,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:41:13,689 INFO L87 Difference]: Start difference. First operand 37802 states and 201333 transitions. Second operand 20 states. [2020-09-17 14:41:19,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:41:19,007 INFO L93 Difference]: Finished difference Result 183299 states and 799959 transitions. [2020-09-17 14:41:19,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:41:19,008 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:41:19,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:41:19,578 INFO L225 Difference]: With dead ends: 183299 [2020-09-17 14:41:19,579 INFO L226 Difference]: Without dead ends: 183281 [2020-09-17 14:41:19,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:41:22,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183281 states. [2020-09-17 14:41:27,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183281 to 37899. [2020-09-17 14:41:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-09-17 14:41:27,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 201806 transitions. [2020-09-17 14:41:27,622 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 201806 transitions. Word has length 27 [2020-09-17 14:41:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:41:27,622 INFO L479 AbstractCegarLoop]: Abstraction has 37899 states and 201806 transitions. [2020-09-17 14:41:27,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:41:27,623 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 201806 transitions. [2020-09-17 14:41:27,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:41:27,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:41:27,627 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:41:27,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-09-17 14:41:27,828 INFO L427 AbstractCegarLoop]: === Iteration 62 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:41:27,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:41:27,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1873315275, now seen corresponding path program 18 times [2020-09-17 14:41:27,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:41:27,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125053169] [2020-09-17 14:41:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:41:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:41:27,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125053169] [2020-09-17 14:41:27,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363675306] [2020-09-17 14:41:27,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:41:28,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-09-17 14:41:28,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:41:28,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:41:28,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:41:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:41:28,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:41:28,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:41:28,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001819899] [2020-09-17 14:41:28,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:41:28,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:41:28,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:41:28,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:41:28,338 INFO L87 Difference]: Start difference. First operand 37899 states and 201806 transitions. Second operand 20 states. [2020-09-17 14:41:34,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:41:34,090 INFO L93 Difference]: Finished difference Result 182890 states and 798217 transitions. [2020-09-17 14:41:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:41:34,091 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:41:34,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:41:34,778 INFO L225 Difference]: With dead ends: 182890 [2020-09-17 14:41:34,778 INFO L226 Difference]: Without dead ends: 182862 [2020-09-17 14:41:34,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1861 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:41:36,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182862 states. [2020-09-17 14:41:39,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182862 to 37637. [2020-09-17 14:41:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37637 states. [2020-09-17 14:41:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37637 states to 37637 states and 200371 transitions. [2020-09-17 14:41:39,823 INFO L78 Accepts]: Start accepts. Automaton has 37637 states and 200371 transitions. Word has length 27 [2020-09-17 14:41:39,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:41:39,823 INFO L479 AbstractCegarLoop]: Abstraction has 37637 states and 200371 transitions. [2020-09-17 14:41:39,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:41:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 37637 states and 200371 transitions. [2020-09-17 14:41:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:41:39,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:41:39,829 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:41:40,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-09-17 14:41:40,030 INFO L427 AbstractCegarLoop]: === Iteration 63 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:41:40,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:41:40,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1424539998, now seen corresponding path program 1 times [2020-09-17 14:41:40,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:41:40,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676016046] [2020-09-17 14:41:40,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:41:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:41:40,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676016046] [2020-09-17 14:41:40,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294364687] [2020-09-17 14:41:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:41:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:40,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:41:40,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:41:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:41:40,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:41:40,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:41:40,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444348735] [2020-09-17 14:41:40,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:41:40,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:41:40,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:41:40,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:41:40,334 INFO L87 Difference]: Start difference. First operand 37637 states and 200371 transitions. Second operand 12 states. [2020-09-17 14:41:42,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:41:42,225 INFO L93 Difference]: Finished difference Result 88848 states and 432494 transitions. [2020-09-17 14:41:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:41:42,226 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 14:41:42,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:41:42,567 INFO L225 Difference]: With dead ends: 88848 [2020-09-17 14:41:42,568 INFO L226 Difference]: Without dead ends: 88788 [2020-09-17 14:41:42,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:41:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88788 states. [2020-09-17 14:41:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88788 to 39292. [2020-09-17 14:41:44,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39292 states. [2020-09-17 14:41:48,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39292 states to 39292 states and 209387 transitions. [2020-09-17 14:41:48,225 INFO L78 Accepts]: Start accepts. Automaton has 39292 states and 209387 transitions. Word has length 27 [2020-09-17 14:41:48,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:41:48,226 INFO L479 AbstractCegarLoop]: Abstraction has 39292 states and 209387 transitions. [2020-09-17 14:41:48,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:41:48,226 INFO L276 IsEmpty]: Start isEmpty. Operand 39292 states and 209387 transitions. [2020-09-17 14:41:48,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:41:48,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:41:48,231 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:41:48,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:41:48,432 INFO L427 AbstractCegarLoop]: === Iteration 64 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:41:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:41:48,433 INFO L82 PathProgramCache]: Analyzing trace with hash -839318940, now seen corresponding path program 1 times [2020-09-17 14:41:48,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:41:48,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125322874] [2020-09-17 14:41:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:41:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:41:48,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125322874] [2020-09-17 14:41:48,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403420718] [2020-09-17 14:41:48,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:41:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:48,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:41:48,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:41:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:41:48,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:41:48,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:41:48,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012770240] [2020-09-17 14:41:48,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:41:48,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:41:48,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:41:48,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:41:48,721 INFO L87 Difference]: Start difference. First operand 39292 states and 209387 transitions. Second operand 12 states. [2020-09-17 14:41:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:41:49,816 INFO L93 Difference]: Finished difference Result 92913 states and 454143 transitions. [2020-09-17 14:41:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:41:49,817 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 14:41:49,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:41:50,164 INFO L225 Difference]: With dead ends: 92913 [2020-09-17 14:41:50,164 INFO L226 Difference]: Without dead ends: 92836 [2020-09-17 14:41:50,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:41:51,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92836 states. [2020-09-17 14:41:52,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92836 to 40834. [2020-09-17 14:41:52,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40834 states. [2020-09-17 14:41:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40834 states to 40834 states and 218021 transitions. [2020-09-17 14:41:53,143 INFO L78 Accepts]: Start accepts. Automaton has 40834 states and 218021 transitions. Word has length 27 [2020-09-17 14:41:53,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:41:53,143 INFO L479 AbstractCegarLoop]: Abstraction has 40834 states and 218021 transitions. [2020-09-17 14:41:53,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:41:53,143 INFO L276 IsEmpty]: Start isEmpty. Operand 40834 states and 218021 transitions. [2020-09-17 14:41:53,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:41:53,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:41:53,149 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:41:53,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-09-17 14:41:53,358 INFO L427 AbstractCegarLoop]: === Iteration 65 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:41:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:41:53,359 INFO L82 PathProgramCache]: Analyzing trace with hash -947827339, now seen corresponding path program 19 times [2020-09-17 14:41:53,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:41:53,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070723010] [2020-09-17 14:41:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:41:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:41:53,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070723010] [2020-09-17 14:41:53,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:41:53,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 14:41:53,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566282297] [2020-09-17 14:41:53,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 14:41:53,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:41:53,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 14:41:53,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 14:41:53,502 INFO L87 Difference]: Start difference. First operand 40834 states and 218021 transitions. Second operand 11 states. [2020-09-17 14:41:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:41:58,618 INFO L93 Difference]: Finished difference Result 180696 states and 786321 transitions. [2020-09-17 14:41:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:41:58,620 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 14:41:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:41:59,260 INFO L225 Difference]: With dead ends: 180696 [2020-09-17 14:41:59,261 INFO L226 Difference]: Without dead ends: 180678 [2020-09-17 14:41:59,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 14:42:00,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180678 states. [2020-09-17 14:42:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180678 to 40673. [2020-09-17 14:42:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40673 states. [2020-09-17 14:42:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 217228 transitions. [2020-09-17 14:42:07,114 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 217228 transitions. Word has length 27 [2020-09-17 14:42:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:42:07,114 INFO L479 AbstractCegarLoop]: Abstraction has 40673 states and 217228 transitions. [2020-09-17 14:42:07,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 14:42:07,114 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 217228 transitions. [2020-09-17 14:42:07,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:42:07,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:42:07,120 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:42:07,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-09-17 14:42:07,120 INFO L427 AbstractCegarLoop]: === Iteration 66 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:42:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:42:07,120 INFO L82 PathProgramCache]: Analyzing trace with hash -963570379, now seen corresponding path program 20 times [2020-09-17 14:42:07,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:42:07,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253024623] [2020-09-17 14:42:07,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:42:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:42:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:42:07,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253024623] [2020-09-17 14:42:07,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:42:07,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 14:42:07,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458945212] [2020-09-17 14:42:07,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 14:42:07,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:42:07,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 14:42:07,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 14:42:07,272 INFO L87 Difference]: Start difference. First operand 40673 states and 217228 transitions. Second operand 11 states. [2020-09-17 14:42:12,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:42:12,515 INFO L93 Difference]: Finished difference Result 180287 states and 784579 transitions. [2020-09-17 14:42:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:42:12,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 14:42:12,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:42:13,188 INFO L225 Difference]: With dead ends: 180287 [2020-09-17 14:42:13,188 INFO L226 Difference]: Without dead ends: 180263 [2020-09-17 14:42:13,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 14:42:14,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180263 states. [2020-09-17 14:42:17,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180263 to 40321. [2020-09-17 14:42:17,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40321 states. [2020-09-17 14:42:18,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 215433 transitions. [2020-09-17 14:42:18,112 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 215433 transitions. Word has length 27 [2020-09-17 14:42:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:42:18,113 INFO L479 AbstractCegarLoop]: Abstraction has 40321 states and 215433 transitions. [2020-09-17 14:42:18,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 14:42:18,113 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 215433 transitions. [2020-09-17 14:42:18,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:42:18,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:42:18,118 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:42:18,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-09-17 14:42:18,119 INFO L427 AbstractCegarLoop]: === Iteration 67 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:42:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:42:18,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1412510069, now seen corresponding path program 21 times [2020-09-17 14:42:18,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:42:18,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777532205] [2020-09-17 14:42:18,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:42:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:42:18,262 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:42:18,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777532205] [2020-09-17 14:42:18,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:42:18,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 14:42:18,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497135705] [2020-09-17 14:42:18,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 14:42:18,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:42:18,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 14:42:18,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 14:42:18,264 INFO L87 Difference]: Start difference. First operand 40321 states and 215433 transitions. Second operand 11 states. [2020-09-17 14:42:23,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:42:23,390 INFO L93 Difference]: Finished difference Result 179815 states and 782456 transitions. [2020-09-17 14:42:23,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:42:23,391 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 14:42:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:42:23,938 INFO L225 Difference]: With dead ends: 179815 [2020-09-17 14:42:23,939 INFO L226 Difference]: Without dead ends: 179797 [2020-09-17 14:42:23,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 14:42:25,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179797 states. [2020-09-17 14:42:31,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179797 to 40030. [2020-09-17 14:42:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40030 states. [2020-09-17 14:42:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40030 states to 40030 states and 214096 transitions. [2020-09-17 14:42:31,743 INFO L78 Accepts]: Start accepts. Automaton has 40030 states and 214096 transitions. Word has length 27 [2020-09-17 14:42:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:42:31,744 INFO L479 AbstractCegarLoop]: Abstraction has 40030 states and 214096 transitions. [2020-09-17 14:42:31,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 14:42:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 40030 states and 214096 transitions. [2020-09-17 14:42:31,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:42:31,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:42:31,750 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:42:31,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-09-17 14:42:31,750 INFO L427 AbstractCegarLoop]: === Iteration 68 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:42:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:42:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1385815349, now seen corresponding path program 22 times [2020-09-17 14:42:31,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:42:31,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618837087] [2020-09-17 14:42:31,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:42:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:42:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:42:31,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618837087] [2020-09-17 14:42:31,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:42:31,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 14:42:31,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239888878] [2020-09-17 14:42:31,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 14:42:31,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:42:31,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 14:42:31,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 14:42:31,909 INFO L87 Difference]: Start difference. First operand 40030 states and 214096 transitions. Second operand 11 states. [2020-09-17 14:42:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:42:36,819 INFO L93 Difference]: Finished difference Result 179585 states and 781438 transitions. [2020-09-17 14:42:36,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:42:36,820 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 14:42:36,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:42:37,388 INFO L225 Difference]: With dead ends: 179585 [2020-09-17 14:42:37,389 INFO L226 Difference]: Without dead ends: 179561 [2020-09-17 14:42:37,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 14:42:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179561 states. [2020-09-17 14:42:41,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179561 to 39678. [2020-09-17 14:42:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39678 states. [2020-09-17 14:42:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39678 states to 39678 states and 212301 transitions. [2020-09-17 14:42:42,167 INFO L78 Accepts]: Start accepts. Automaton has 39678 states and 212301 transitions. Word has length 27 [2020-09-17 14:42:42,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:42:42,167 INFO L479 AbstractCegarLoop]: Abstraction has 39678 states and 212301 transitions. [2020-09-17 14:42:42,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 14:42:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 39678 states and 212301 transitions. [2020-09-17 14:42:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:42:42,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:42:42,173 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:42:42,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-09-17 14:42:42,173 INFO L427 AbstractCegarLoop]: === Iteration 69 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:42:42,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:42:42,174 INFO L82 PathProgramCache]: Analyzing trace with hash -847392523, now seen corresponding path program 23 times [2020-09-17 14:42:42,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:42:42,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544163385] [2020-09-17 14:42:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:42:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:42:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:42:42,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544163385] [2020-09-17 14:42:42,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:42:42,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 14:42:42,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11248259] [2020-09-17 14:42:42,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 14:42:42,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:42:42,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 14:42:42,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 14:42:42,335 INFO L87 Difference]: Start difference. First operand 39678 states and 212301 transitions. Second operand 11 states. [2020-09-17 14:42:47,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:42:47,666 INFO L93 Difference]: Finished difference Result 179113 states and 779315 transitions. [2020-09-17 14:42:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:42:47,668 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 14:42:47,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:42:48,210 INFO L225 Difference]: With dead ends: 179113 [2020-09-17 14:42:48,211 INFO L226 Difference]: Without dead ends: 179095 [2020-09-17 14:42:48,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 14:42:50,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179095 states. [2020-09-17 14:42:52,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179095 to 39387. [2020-09-17 14:42:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39387 states. [2020-09-17 14:42:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39387 states to 39387 states and 210964 transitions. [2020-09-17 14:42:52,714 INFO L78 Accepts]: Start accepts. Automaton has 39387 states and 210964 transitions. Word has length 27 [2020-09-17 14:42:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:42:52,715 INFO L479 AbstractCegarLoop]: Abstraction has 39387 states and 210964 transitions. [2020-09-17 14:42:52,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 14:42:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 39387 states and 210964 transitions. [2020-09-17 14:42:52,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:42:52,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:42:52,720 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:42:52,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-09-17 14:42:52,720 INFO L427 AbstractCegarLoop]: === Iteration 70 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:42:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:42:52,721 INFO L82 PathProgramCache]: Analyzing trace with hash -858344203, now seen corresponding path program 24 times [2020-09-17 14:42:52,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:42:52,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984708195] [2020-09-17 14:42:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:42:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:42:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:42:52,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984708195] [2020-09-17 14:42:52,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:42:52,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 14:42:52,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971250619] [2020-09-17 14:42:52,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 14:42:52,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:42:52,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 14:42:52,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 14:42:52,863 INFO L87 Difference]: Start difference. First operand 39387 states and 210964 transitions. Second operand 11 states. [2020-09-17 14:42:59,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:42:59,487 INFO L93 Difference]: Finished difference Result 178704 states and 777573 transitions. [2020-09-17 14:42:59,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:42:59,488 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 14:42:59,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:42:59,994 INFO L225 Difference]: With dead ends: 178704 [2020-09-17 14:42:59,995 INFO L226 Difference]: Without dead ends: 178675 [2020-09-17 14:42:59,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 14:43:02,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178675 states. [2020-09-17 14:43:04,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178675 to 38805. [2020-09-17 14:43:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38805 states. [2020-09-17 14:43:04,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 208284 transitions. [2020-09-17 14:43:04,333 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 208284 transitions. Word has length 27 [2020-09-17 14:43:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:43:04,333 INFO L479 AbstractCegarLoop]: Abstraction has 38805 states and 208284 transitions. [2020-09-17 14:43:04,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 14:43:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 208284 transitions. [2020-09-17 14:43:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:43:04,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:43:04,339 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:43:04,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-09-17 14:43:04,340 INFO L427 AbstractCegarLoop]: === Iteration 71 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:43:04,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:43:04,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1294328210, now seen corresponding path program 2 times [2020-09-17 14:43:04,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:43:04,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841677777] [2020-09-17 14:43:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:43:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:43:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 14:43:04,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841677777] [2020-09-17 14:43:04,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:43:04,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:43:04,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86012627] [2020-09-17 14:43:04,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:43:04,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:43:04,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:43:04,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:43:04,440 INFO L87 Difference]: Start difference. First operand 38805 states and 208284 transitions. Second operand 7 states. [2020-09-17 14:43:06,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:43:06,640 INFO L93 Difference]: Finished difference Result 90966 states and 445145 transitions. [2020-09-17 14:43:06,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:43:06,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 14:43:06,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:43:06,927 INFO L225 Difference]: With dead ends: 90966 [2020-09-17 14:43:06,928 INFO L226 Difference]: Without dead ends: 90889 [2020-09-17 14:43:06,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:43:07,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90889 states. [2020-09-17 14:43:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90889 to 40453. [2020-09-17 14:43:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-09-17 14:43:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 217061 transitions. [2020-09-17 14:43:09,247 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 217061 transitions. Word has length 27 [2020-09-17 14:43:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:43:09,247 INFO L479 AbstractCegarLoop]: Abstraction has 40453 states and 217061 transitions. [2020-09-17 14:43:09,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:43:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 217061 transitions. [2020-09-17 14:43:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:43:09,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:43:09,253 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:43:09,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-09-17 14:43:09,254 INFO L427 AbstractCegarLoop]: === Iteration 72 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:43:09,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:43:09,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1294339618, now seen corresponding path program 2 times [2020-09-17 14:43:09,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:43:09,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737166421] [2020-09-17 14:43:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:43:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:43:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 14:43:09,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737166421] [2020-09-17 14:43:09,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:43:09,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:43:09,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836720938] [2020-09-17 14:43:09,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:43:09,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:43:09,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:43:09,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:43:09,336 INFO L87 Difference]: Start difference. First operand 40453 states and 217061 transitions. Second operand 7 states. [2020-09-17 14:43:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:43:10,913 INFO L93 Difference]: Finished difference Result 91560 states and 447373 transitions. [2020-09-17 14:43:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:43:10,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 14:43:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:43:11,232 INFO L225 Difference]: With dead ends: 91560 [2020-09-17 14:43:11,233 INFO L226 Difference]: Without dead ends: 91483 [2020-09-17 14:43:11,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:43:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91483 states. [2020-09-17 14:43:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91483 to 41467. [2020-09-17 14:43:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41467 states. [2020-09-17 14:43:13,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41467 states to 41467 states and 222391 transitions. [2020-09-17 14:43:13,603 INFO L78 Accepts]: Start accepts. Automaton has 41467 states and 222391 transitions. Word has length 27 [2020-09-17 14:43:13,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:43:13,603 INFO L479 AbstractCegarLoop]: Abstraction has 41467 states and 222391 transitions. [2020-09-17 14:43:13,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:43:13,603 INFO L276 IsEmpty]: Start isEmpty. Operand 41467 states and 222391 transitions. [2020-09-17 14:43:13,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:43:13,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:43:13,608 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:43:13,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-09-17 14:43:13,609 INFO L427 AbstractCegarLoop]: === Iteration 73 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:43:13,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:43:13,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1294356017, now seen corresponding path program 2 times [2020-09-17 14:43:13,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:43:13,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274778659] [2020-09-17 14:43:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:43:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:43:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 14:43:13,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274778659] [2020-09-17 14:43:13,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:43:13,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:43:13,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100282620] [2020-09-17 14:43:13,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:43:13,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:43:13,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:43:13,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:43:13,687 INFO L87 Difference]: Start difference. First operand 41467 states and 222391 transitions. Second operand 7 states. [2020-09-17 14:43:15,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:43:15,064 INFO L93 Difference]: Finished difference Result 92674 states and 452263 transitions. [2020-09-17 14:43:15,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:43:15,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 14:43:15,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:43:15,354 INFO L225 Difference]: With dead ends: 92674 [2020-09-17 14:43:15,354 INFO L226 Difference]: Without dead ends: 92597 [2020-09-17 14:43:15,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:43:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92597 states. [2020-09-17 14:43:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92597 to 42564. [2020-09-17 14:43:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-09-17 14:43:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 227862 transitions. [2020-09-17 14:43:17,737 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 227862 transitions. Word has length 27 [2020-09-17 14:43:17,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:43:17,737 INFO L479 AbstractCegarLoop]: Abstraction has 42564 states and 227862 transitions. [2020-09-17 14:43:17,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:43:17,737 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 227862 transitions. [2020-09-17 14:43:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:43:17,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:43:17,743 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:43:17,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-09-17 14:43:17,743 INFO L427 AbstractCegarLoop]: === Iteration 74 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:43:17,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:43:17,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1294335650, now seen corresponding path program 2 times [2020-09-17 14:43:17,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:43:17,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758669332] [2020-09-17 14:43:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:43:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:43:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 14:43:18,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758669332] [2020-09-17 14:43:18,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:43:18,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:43:18,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698632405] [2020-09-17 14:43:18,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:43:18,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:43:18,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:43:18,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:43:18,416 INFO L87 Difference]: Start difference. First operand 42564 states and 227862 transitions. Second operand 7 states. [2020-09-17 14:43:19,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:43:19,538 INFO L93 Difference]: Finished difference Result 93922 states and 458312 transitions. [2020-09-17 14:43:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:43:19,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 14:43:19,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:43:19,841 INFO L225 Difference]: With dead ends: 93922 [2020-09-17 14:43:19,841 INFO L226 Difference]: Without dead ends: 93845 [2020-09-17 14:43:19,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 14:43:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93845 states. [2020-09-17 14:43:22,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93845 to 43794. [2020-09-17 14:43:22,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-09-17 14:43:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-09-17 14:43:23,096 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-09-17 14:43:23,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:43:23,096 INFO L479 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-09-17 14:43:23,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:43:23,096 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-09-17 14:43:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 14:43:23,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:43:23,105 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:43:23,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-09-17 14:43:23,105 INFO L427 AbstractCegarLoop]: === Iteration 75 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:43:23,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:43:23,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1919686780, now seen corresponding path program 1 times [2020-09-17 14:43:23,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:43:23,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761827101] [2020-09-17 14:43:23,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:43:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:43:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:43:23,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761827101] [2020-09-17 14:43:23,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89958638] [2020-09-17 14:43:23,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:43:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:43:23,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:43:23,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:43:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:43:23,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:43:23,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:43:23,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466549851] [2020-09-17 14:43:23,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:43:23,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:43:23,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:43:23,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:43:23,474 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 16 states. [2020-09-17 14:43:25,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:43:25,787 INFO L93 Difference]: Finished difference Result 140781 states and 654227 transitions. [2020-09-17 14:43:25,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:43:25,788 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-17 14:43:25,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:43:26,189 INFO L225 Difference]: With dead ends: 140781 [2020-09-17 14:43:26,189 INFO L226 Difference]: Without dead ends: 140737 [2020-09-17 14:43:26,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:43:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140737 states. [2020-09-17 14:43:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140737 to 43602. [2020-09-17 14:43:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43602 states. [2020-09-17 14:43:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43602 states to 43602 states and 232379 transitions. [2020-09-17 14:43:30,085 INFO L78 Accepts]: Start accepts. Automaton has 43602 states and 232379 transitions. Word has length 29 [2020-09-17 14:43:30,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:43:30,085 INFO L479 AbstractCegarLoop]: Abstraction has 43602 states and 232379 transitions. [2020-09-17 14:43:30,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:43:30,086 INFO L276 IsEmpty]: Start isEmpty. Operand 43602 states and 232379 transitions. [2020-09-17 14:43:30,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 14:43:30,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:43:30,093 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:43:30,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:43:30,294 INFO L427 AbstractCegarLoop]: === Iteration 76 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:43:30,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:43:30,295 INFO L82 PathProgramCache]: Analyzing trace with hash -422590804, now seen corresponding path program 1 times [2020-09-17 14:43:30,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:43:30,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538489711] [2020-09-17 14:43:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:43:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:43:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:43:30,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538489711] [2020-09-17 14:43:30,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347294514] [2020-09-17 14:43:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:43:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:43:30,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:43:30,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:43:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:43:30,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:43:30,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:43:30,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992782474] [2020-09-17 14:43:30,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:43:30,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:43:30,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:43:30,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:43:30,666 INFO L87 Difference]: Start difference. First operand 43602 states and 232379 transitions. Second operand 16 states. [2020-09-17 14:43:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:43:35,974 INFO L93 Difference]: Finished difference Result 139468 states and 647412 transitions. [2020-09-17 14:43:35,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:43:35,975 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-17 14:43:35,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:43:36,398 INFO L225 Difference]: With dead ends: 139468 [2020-09-17 14:43:36,398 INFO L226 Difference]: Without dead ends: 139424 [2020-09-17 14:43:36,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:43:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139424 states. [2020-09-17 14:43:39,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139424 to 43506. [2020-09-17 14:43:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43506 states.