/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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:19:29,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:19:29,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:19:29,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:19:29,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:19:29,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:19:29,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:19:29,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:19:29,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:19:29,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:19:29,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:19:29,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:19:29,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:19:29,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:19:29,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:19:29,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:19:29,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:19:29,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:19:29,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:19:29,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:19:29,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:19:29,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:19:29,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:19:29,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:19:29,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:19:29,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:19:29,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:19:29,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:19:29,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:19:29,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:19:29,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:19:29,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:19:29,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:19:29,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:19:29,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:19:29,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:19:29,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:19:29,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:19:29,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:19:29,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:19:29,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:19:29,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 12:19:30,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:19:30,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:19:30,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:19:30,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:19:30,048 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:19:30,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:19:30,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:19:30,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:19:30,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:19:30,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:19:30,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:19:30,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:19:30,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:19:30,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:19:30,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:19:30,051 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:19:30,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:19:30,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:19:30,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:19:30,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:19:30,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:19:30,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:19:30,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:19:30,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:19:30,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:19:30,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:19:30,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:19:30,053 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:19:30,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:19:30,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:19:30,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:19:30,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:19:30,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:19:30,394 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:19:30,395 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-16 12:19:30,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eac2b8027/15d51b9226734f0bb29ff46db3ce6343/FLAG04fed7813 [2020-10-16 12:19:31,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:19:31,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-16 12:19:31,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eac2b8027/15d51b9226734f0bb29ff46db3ce6343/FLAG04fed7813 [2020-10-16 12:19:31,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eac2b8027/15d51b9226734f0bb29ff46db3ce6343 [2020-10-16 12:19:31,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:19:31,350 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:19:31,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:19:31,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:19:31,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:19:31,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:19:31" (1/1) ... [2020-10-16 12:19:31,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245ad007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:31, skipping insertion in model container [2020-10-16 12:19:31,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:19:31" (1/1) ... [2020-10-16 12:19:31,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:19:31,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:19:31,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:19:31,959 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:19:32,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:19:32,127 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:19:32,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:32 WrapperNode [2020-10-16 12:19:32,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:19:32,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:19:32,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:19:32,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:19:32,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:32" (1/1) ... [2020-10-16 12:19:32,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:32" (1/1) ... [2020-10-16 12:19:32,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:19:32,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:19:32,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:19:32,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:19:32,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:32" (1/1) ... [2020-10-16 12:19:32,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:32" (1/1) ... [2020-10-16 12:19:32,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:32" (1/1) ... [2020-10-16 12:19:32,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:32" (1/1) ... [2020-10-16 12:19:32,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:32" (1/1) ... [2020-10-16 12:19:32,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:32" (1/1) ... [2020-10-16 12:19:32,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:32" (1/1) ... [2020-10-16 12:19:32,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:19:32,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:19:32,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:19:32,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:19:32,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:19:32,287 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 12:19:32,288 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 12:19:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 12:19:32,288 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 12:19:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:19:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:19:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:19:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:19:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:19:32,290 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:19:32,618 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:19:32,618 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-16 12:19:32,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:19:32 BoogieIcfgContainer [2020-10-16 12:19:32,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:19:32,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:19:32,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:19:32,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:19:32,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:19:31" (1/3) ... [2020-10-16 12:19:32,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42582da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:19:32, skipping insertion in model container [2020-10-16 12:19:32,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:32" (2/3) ... [2020-10-16 12:19:32,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42582da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:19:32, skipping insertion in model container [2020-10-16 12:19:32,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:19:32" (3/3) ... [2020-10-16 12:19:32,647 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-10-16 12:19:32,665 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:19:32,665 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:19:32,673 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:19:32,674 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:19:32,706 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,706 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,707 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,707 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,709 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,716 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,717 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,717 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,717 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,718 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:32,735 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:19:32,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:19:32,770 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:19:32,770 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:19:32,771 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:19:32,771 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:19:32,771 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:19:32,771 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:19:32,771 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:19:32,771 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:19:32,783 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:19:32,784 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-16 12:19:32,786 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-16 12:19:32,788 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-16 12:19:32,834 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-16 12:19:32,834 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:19:32,840 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. [2020-10-16 12:19:32,846 INFO L117 LiptonReduction]: Number of co-enabled transitions 592 [2020-10-16 12:19:34,204 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-16 12:19:34,465 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-16 12:19:34,576 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-16 12:19:34,727 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-16 12:19:34,807 INFO L132 LiptonReduction]: Checked pairs total: 576 [2020-10-16 12:19:34,808 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-16 12:19:34,817 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-16 12:19:34,832 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 12:19:34,834 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 12:19:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 12:19:34,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:34,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 12:19:34,845 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:34,850 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-10-16 12:19:34,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:34,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508846040] [2020-10-16 12:19:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:35,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508846040] [2020-10-16 12:19:35,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:35,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:19:35,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171064344] [2020-10-16 12:19:35,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:19:35,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:35,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:19:35,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:35,111 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-16 12:19:35,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:35,157 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-16 12:19:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:19:35,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 12:19:35,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:35,172 INFO L225 Difference]: With dead ends: 35 [2020-10-16 12:19:35,172 INFO L226 Difference]: Without dead ends: 31 [2020-10-16 12:19:35,175 INFO L677 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 [2020-10-16 12:19:35,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-16 12:19:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-16 12:19:35,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-16 12:19:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-16 12:19:35,213 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-16 12:19:35,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:35,214 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-16 12:19:35,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:19:35,214 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-16 12:19:35,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 12:19:35,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:35,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:35,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:19:35,216 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:35,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:35,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-10-16 12:19:35,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:35,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062990855] [2020-10-16 12:19:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:35,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062990855] [2020-10-16 12:19:35,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:35,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:19:35,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870523213] [2020-10-16 12:19:35,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:19:35,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:35,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:19:35,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:19:35,343 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-16 12:19:35,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:35,364 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-16 12:19:35,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:19:35,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-16 12:19:35,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:35,366 INFO L225 Difference]: With dead ends: 26 [2020-10-16 12:19:35,366 INFO L226 Difference]: Without dead ends: 24 [2020-10-16 12:19:35,367 INFO L677 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 [2020-10-16 12:19:35,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-16 12:19:35,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-16 12:19:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-16 12:19:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-16 12:19:35,372 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-16 12:19:35,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:35,372 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-16 12:19:35,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:19:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-16 12:19:35,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:19:35,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:35,374 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:35,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:19:35,374 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:35,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:35,374 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-10-16 12:19:35,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:35,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639943362] [2020-10-16 12:19:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:35,415 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:35,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:35,462 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:19:35,462 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:19:35,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:19:35,463 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:19:35,464 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:19:35,464 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 12:19:35,472 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,473 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,473 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,473 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,473 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,473 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,474 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,474 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,474 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,474 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,474 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,476 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,476 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,477 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,478 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,478 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,480 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,481 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,481 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,483 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,483 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,483 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,483 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,483 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,488 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,488 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,488 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:35,490 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:19:35,490 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 12:19:35,490 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:19:35,490 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:19:35,491 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:19:35,491 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:19:35,491 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:19:35,491 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:19:35,491 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:19:35,491 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:19:35,494 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:19:35,494 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-16 12:19:35,494 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-16 12:19:35,494 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-16 12:19:35,515 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-16 12:19:35,516 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 12:19:35,517 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. [2020-10-16 12:19:35,519 INFO L117 LiptonReduction]: Number of co-enabled transitions 920 [2020-10-16 12:19:36,880 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-16 12:19:37,017 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 12:19:37,023 INFO L132 LiptonReduction]: Checked pairs total: 1122 [2020-10-16 12:19:37,023 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-16 12:19:37,023 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-16 12:19:37,039 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-16 12:19:37,039 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-16 12:19:37,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 12:19:37,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:37,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 12:19:37,040 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:37,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:37,040 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-10-16 12:19:37,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:37,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005556024] [2020-10-16 12:19:37,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:37,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005556024] [2020-10-16 12:19:37,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:37,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:19:37,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821214674] [2020-10-16 12:19:37,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:19:37,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:37,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:19:37,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:37,090 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-16 12:19:37,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:37,122 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-16 12:19:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:19:37,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 12:19:37,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:37,128 INFO L225 Difference]: With dead ends: 185 [2020-10-16 12:19:37,129 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 12:19:37,129 INFO L677 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 [2020-10-16 12:19:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 12:19:37,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-16 12:19:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 12:19:37,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-16 12:19:37,156 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-16 12:19:37,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:37,156 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-16 12:19:37,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:19:37,156 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-16 12:19:37,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:19:37,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:37,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:37,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:19:37,158 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:37,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:37,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-10-16 12:19:37,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:37,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630288873] [2020-10-16 12:19:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:37,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630288873] [2020-10-16 12:19:37,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:37,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:37,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720009446] [2020-10-16 12:19:37,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:19:37,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:37,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:19:37,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:19:37,263 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-16 12:19:37,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:37,375 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-16 12:19:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:19:37,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 12:19:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:37,379 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:19:37,380 INFO L226 Difference]: Without dead ends: 201 [2020-10-16 12:19:37,380 INFO L677 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 [2020-10-16 12:19:37,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-16 12:19:37,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-16 12:19:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 12:19:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-16 12:19:37,401 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-16 12:19:37,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:37,401 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-16 12:19:37,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:19:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-16 12:19:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:19:37,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:37,403 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:37,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:19:37,404 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:37,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-10-16 12:19:37,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:37,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372430369] [2020-10-16 12:19:37,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:37,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372430369] [2020-10-16 12:19:37,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:37,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:37,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200449231] [2020-10-16 12:19:37,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:19:37,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:37,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:19:37,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:19:37,461 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-16 12:19:37,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:37,555 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-16 12:19:37,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:19:37,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 12:19:37,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:37,559 INFO L225 Difference]: With dead ends: 189 [2020-10-16 12:19:37,559 INFO L226 Difference]: Without dead ends: 185 [2020-10-16 12:19:37,559 INFO L677 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 [2020-10-16 12:19:37,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-16 12:19:37,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-16 12:19:37,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:19:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-16 12:19:37,575 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-16 12:19:37,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:37,577 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-16 12:19:37,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:19:37,577 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-16 12:19:37,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:19:37,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:37,579 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:37,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:19:37,579 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:37,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:37,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-10-16 12:19:37,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:37,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709909465] [2020-10-16 12:19:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:37,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:37,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:37,618 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:19:37,618 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:19:37,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:19:37,619 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:19:37,619 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:19:37,621 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 12:19:37,632 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,632 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,634 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,634 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,635 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,635 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,635 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,635 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,636 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,639 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,639 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,640 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,640 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,640 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,640 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,640 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,641 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,641 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,641 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,641 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,641 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,642 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,642 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,643 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,643 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,643 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,643 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,643 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,644 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,645 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,645 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,645 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,645 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,665 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,665 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,665 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,666 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,666 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,667 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,667 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,667 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,668 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,668 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:37,677 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:19:37,677 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 12:19:37,677 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:19:37,678 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:19:37,678 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:19:37,678 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:19:37,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:19:37,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:19:37,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:19:37,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:19:37,681 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:19:37,681 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-16 12:19:37,681 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-16 12:19:37,682 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-16 12:19:37,705 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-16 12:19:37,705 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 12:19:37,707 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. [2020-10-16 12:19:37,709 INFO L117 LiptonReduction]: Number of co-enabled transitions 1308 [2020-10-16 12:19:38,971 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-16 12:19:39,213 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 12:19:39,358 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 12:19:39,366 INFO L132 LiptonReduction]: Checked pairs total: 1841 [2020-10-16 12:19:39,366 INFO L134 LiptonReduction]: Total number of compositions: 79 [2020-10-16 12:19:39,366 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-16 12:19:39,395 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-16 12:19:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-16 12:19:39,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 12:19:39,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:39,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 12:19:39,396 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:39,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:39,397 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-10-16 12:19:39,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:39,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332207745] [2020-10-16 12:19:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:39,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332207745] [2020-10-16 12:19:39,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:39,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:19:39,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306352093] [2020-10-16 12:19:39,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:19:39,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:39,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:19:39,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:39,433 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-16 12:19:39,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:39,463 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-16 12:19:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:19:39,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 12:19:39,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:39,470 INFO L225 Difference]: With dead ends: 600 [2020-10-16 12:19:39,470 INFO L226 Difference]: Without dead ends: 559 [2020-10-16 12:19:39,471 INFO L677 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 [2020-10-16 12:19:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-16 12:19:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-16 12:19:39,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-16 12:19:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-16 12:19:39,545 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-16 12:19:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:39,546 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-16 12:19:39,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:19:39,546 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-16 12:19:39,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:19:39,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:39,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:39,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:19:39,547 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:39,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:39,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-10-16 12:19:39,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:39,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515856229] [2020-10-16 12:19:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:39,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515856229] [2020-10-16 12:19:39,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:39,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:39,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198938125] [2020-10-16 12:19:39,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:19:39,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:39,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:19:39,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:19:39,640 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-16 12:19:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:39,739 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-16 12:19:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:19:39,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 12:19:39,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:39,750 INFO L225 Difference]: With dead ends: 817 [2020-10-16 12:19:39,750 INFO L226 Difference]: Without dead ends: 812 [2020-10-16 12:19:39,751 INFO L677 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 [2020-10-16 12:19:39,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-16 12:19:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-16 12:19:39,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-16 12:19:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-16 12:19:39,793 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-16 12:19:39,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:39,794 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-16 12:19:39,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:19:39,794 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-16 12:19:39,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:19:39,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:39,802 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:39,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:19:39,802 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:39,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-10-16 12:19:39,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:39,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124786957] [2020-10-16 12:19:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:39,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124786957] [2020-10-16 12:19:39,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:39,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:39,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55391870] [2020-10-16 12:19:39,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:19:39,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:39,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:19:39,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:19:39,882 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-16 12:19:39,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:39,999 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-16 12:19:39,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:19:39,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 12:19:40,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:40,006 INFO L225 Difference]: With dead ends: 843 [2020-10-16 12:19:40,006 INFO L226 Difference]: Without dead ends: 836 [2020-10-16 12:19:40,007 INFO L677 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 [2020-10-16 12:19:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-16 12:19:40,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-16 12:19:40,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-16 12:19:40,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-16 12:19:40,036 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-16 12:19:40,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:40,037 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-16 12:19:40,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:19:40,037 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-16 12:19:40,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:19:40,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:40,038 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:40,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 12:19:40,038 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:40,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:40,039 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-10-16 12:19:40,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:40,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643590092] [2020-10-16 12:19:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:40,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643590092] [2020-10-16 12:19:40,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042626101] [2020-10-16 12:19:40,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:19:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:40,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:19:40,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:19:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:40,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:19:40,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:19:40,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121386970] [2020-10-16 12:19:40,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:19:40,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:40,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:19:40,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:19:40,259 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-10-16 12:19:40,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:40,545 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-16 12:19:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:19:40,546 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:19:40,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:40,554 INFO L225 Difference]: With dead ends: 1059 [2020-10-16 12:19:40,554 INFO L226 Difference]: Without dead ends: 1052 [2020-10-16 12:19:40,555 INFO L677 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 [2020-10-16 12:19:40,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-16 12:19:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-16 12:19:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-16 12:19:40,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-16 12:19:40,588 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-16 12:19:40,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:40,588 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-16 12:19:40,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:19:40,588 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-16 12:19:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:19:40,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:40,589 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:40,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 12:19:40,805 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:40,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:40,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-10-16 12:19:40,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:40,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509674879] [2020-10-16 12:19:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:40,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509674879] [2020-10-16 12:19:40,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:40,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:19:40,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521546184] [2020-10-16 12:19:40,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:19:40,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:40,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:19:40,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:19:40,866 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-16 12:19:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:41,132 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-16 12:19:41,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:19:41,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 12:19:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:41,142 INFO L225 Difference]: With dead ends: 1053 [2020-10-16 12:19:41,142 INFO L226 Difference]: Without dead ends: 1045 [2020-10-16 12:19:41,143 INFO L677 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 [2020-10-16 12:19:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-16 12:19:41,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-16 12:19:41,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-16 12:19:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-16 12:19:41,178 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-16 12:19:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:41,178 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-16 12:19:41,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:19:41,179 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-16 12:19:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:19:41,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:41,180 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:41,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 12:19:41,181 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:41,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:41,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-10-16 12:19:41,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:41,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448023970] [2020-10-16 12:19:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:19:41,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448023970] [2020-10-16 12:19:41,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:41,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:41,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040315448] [2020-10-16 12:19:41,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:19:41,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:41,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:19:41,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:19:41,237 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-16 12:19:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:41,358 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-16 12:19:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:19:41,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 12:19:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:41,364 INFO L225 Difference]: With dead ends: 736 [2020-10-16 12:19:41,364 INFO L226 Difference]: Without dead ends: 728 [2020-10-16 12:19:41,364 INFO L677 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 [2020-10-16 12:19:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-16 12:19:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-16 12:19:41,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-16 12:19:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-16 12:19:41,388 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-16 12:19:41,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:41,389 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-16 12:19:41,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:19:41,389 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-16 12:19:41,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:19:41,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:41,390 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:41,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 12:19:41,390 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:41,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:41,391 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-10-16 12:19:41,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:41,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497794972] [2020-10-16 12:19:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:41,403 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:41,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:41,419 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:19:41,419 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:19:41,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 12:19:41,420 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:19:41,420 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:19:41,420 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 12:19:41,432 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,433 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,433 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,433 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,433 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,433 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,434 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,434 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,434 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,434 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,434 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,434 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,435 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,435 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,435 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,435 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,435 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,435 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,436 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,436 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,436 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,436 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,436 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,436 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,436 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,437 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,437 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,437 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,437 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,437 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,438 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,438 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,443 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,443 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,443 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,443 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,444 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,444 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,444 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,444 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,444 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,447 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,448 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,448 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,448 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,448 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,449 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,449 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,449 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,450 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,450 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,451 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,451 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,451 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,452 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,452 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,454 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,454 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,455 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,455 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,455 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,455 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,455 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,455 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,457 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,457 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,457 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,457 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,457 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,457 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,458 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,459 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,459 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,459 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,459 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,459 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,461 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:19:41,461 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 12:19:41,461 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:19:41,461 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:19:41,461 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:19:41,461 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:19:41,462 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:19:41,462 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:19:41,462 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:19:41,462 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:19:41,464 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:19:41,464 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-16 12:19:41,464 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-16 12:19:41,464 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-10-16 12:19:41,486 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-16 12:19:41,486 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 12:19:41,488 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. [2020-10-16 12:19:41,492 INFO L117 LiptonReduction]: Number of co-enabled transitions 1756 [2020-10-16 12:19:42,961 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-16 12:19:43,224 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-16 12:19:43,381 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-16 12:19:43,473 INFO L132 LiptonReduction]: Checked pairs total: 2590 [2020-10-16 12:19:43,473 INFO L134 LiptonReduction]: Total number of compositions: 92 [2020-10-16 12:19:43,474 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-16 12:19:43,596 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-16 12:19:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-16 12:19:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 12:19:43,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:43,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 12:19:43,598 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:43,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:43,598 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-10-16 12:19:43,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:43,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205944115] [2020-10-16 12:19:43,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:43,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205944115] [2020-10-16 12:19:43,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:43,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:19:43,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483750357] [2020-10-16 12:19:43,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:19:43,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:43,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:19:43,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:43,619 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-16 12:19:43,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:43,668 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-16 12:19:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:19:43,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 12:19:43,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:43,685 INFO L225 Difference]: With dead ends: 1889 [2020-10-16 12:19:43,685 INFO L226 Difference]: Without dead ends: 1767 [2020-10-16 12:19:43,686 INFO L677 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 [2020-10-16 12:19:43,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-16 12:19:43,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-16 12:19:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-16 12:19:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-16 12:19:43,810 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-16 12:19:43,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:43,810 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-16 12:19:43,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:19:43,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-16 12:19:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:19:43,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:43,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:43,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 12:19:43,811 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:43,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:43,812 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-10-16 12:19:43,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:43,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181193925] [2020-10-16 12:19:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:43,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181193925] [2020-10-16 12:19:43,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:43,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:43,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562208401] [2020-10-16 12:19:43,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:19:43,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:43,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:19:43,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:19:43,855 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-16 12:19:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:43,974 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-16 12:19:43,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:19:43,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 12:19:43,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:44,000 INFO L225 Difference]: With dead ends: 2905 [2020-10-16 12:19:44,001 INFO L226 Difference]: Without dead ends: 2899 [2020-10-16 12:19:44,001 INFO L677 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 [2020-10-16 12:19:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-16 12:19:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-16 12:19:44,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-16 12:19:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-16 12:19:44,119 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-16 12:19:44,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:44,119 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-16 12:19:44,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:19:44,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-16 12:19:44,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:19:44,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:44,120 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:44,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 12:19:44,120 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:44,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:44,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-10-16 12:19:44,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:44,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737893758] [2020-10-16 12:19:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:44,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737893758] [2020-10-16 12:19:44,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:44,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:44,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978949228] [2020-10-16 12:19:44,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:19:44,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:44,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:19:44,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:19:44,163 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-16 12:19:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:44,276 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-16 12:19:44,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:19:44,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 12:19:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:44,303 INFO L225 Difference]: With dead ends: 3204 [2020-10-16 12:19:44,303 INFO L226 Difference]: Without dead ends: 3194 [2020-10-16 12:19:44,303 INFO L677 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 [2020-10-16 12:19:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-16 12:19:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-16 12:19:44,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-16 12:19:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-16 12:19:44,414 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-16 12:19:44,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:44,415 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-16 12:19:44,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:19:44,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-16 12:19:44,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:19:44,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:44,416 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:44,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 12:19:44,416 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:44,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:44,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-10-16 12:19:44,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:44,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312902922] [2020-10-16 12:19:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:44,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312902922] [2020-10-16 12:19:44,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109384665] [2020-10-16 12:19:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:19:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:44,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:19:44,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:19:44,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:44,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:19:44,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:19:44,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418965636] [2020-10-16 12:19:44,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:19:44,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:44,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:19:44,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:19:44,600 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-10-16 12:19:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:44,972 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-16 12:19:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:19:44,973 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:19:44,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:45,015 INFO L225 Difference]: With dead ends: 4556 [2020-10-16 12:19:45,015 INFO L226 Difference]: Without dead ends: 4546 [2020-10-16 12:19:45,017 INFO L677 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 [2020-10-16 12:19:45,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-16 12:19:45,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-16 12:19:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-16 12:19:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-16 12:19:45,131 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-16 12:19:45,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:45,132 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-16 12:19:45,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:19:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-16 12:19:45,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:19:45,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:45,133 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:45,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 12:19:45,349 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:45,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:45,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-10-16 12:19:45,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:45,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619686693] [2020-10-16 12:19:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:45,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:45,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619686693] [2020-10-16 12:19:45,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:45,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:19:45,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145622571] [2020-10-16 12:19:45,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:19:45,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:45,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:19:45,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:19:45,419 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-16 12:19:45,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:45,710 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-16 12:19:45,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:19:45,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 12:19:45,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:45,728 INFO L225 Difference]: With dead ends: 4612 [2020-10-16 12:19:45,728 INFO L226 Difference]: Without dead ends: 4601 [2020-10-16 12:19:45,729 INFO L677 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 [2020-10-16 12:19:45,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-16 12:19:45,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-16 12:19:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-16 12:19:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-16 12:19:45,831 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-16 12:19:45,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:45,831 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-16 12:19:45,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:19:45,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-16 12:19:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:19:45,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:45,833 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:45,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 12:19:45,833 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:45,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-10-16 12:19:45,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:45,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51065893] [2020-10-16 12:19:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:19:45,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51065893] [2020-10-16 12:19:45,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:45,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:45,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123082438] [2020-10-16 12:19:45,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:19:45,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:45,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:19:45,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:19:45,874 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-16 12:19:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:45,980 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-16 12:19:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:19:45,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 12:19:45,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:45,993 INFO L225 Difference]: With dead ends: 3265 [2020-10-16 12:19:45,994 INFO L226 Difference]: Without dead ends: 3250 [2020-10-16 12:19:45,994 INFO L677 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 [2020-10-16 12:19:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-16 12:19:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-16 12:19:46,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-16 12:19:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-16 12:19:46,144 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-16 12:19:46,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:46,144 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-16 12:19:46,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:19:46,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-16 12:19:46,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:19:46,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:46,146 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:46,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 12:19:46,146 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:46,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:46,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-10-16 12:19:46,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:46,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958852662] [2020-10-16 12:19:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:19:46,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958852662] [2020-10-16 12:19:46,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614939057] [2020-10-16 12:19:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:19:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:46,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:19:46,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:19:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:19:46,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:19:46,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:19:46,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138290737] [2020-10-16 12:19:46,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:19:46,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:46,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:19:46,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:19:46,366 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-10-16 12:19:46,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:46,730 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-16 12:19:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:19:46,731 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-16 12:19:46,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:46,748 INFO L225 Difference]: With dead ends: 4825 [2020-10-16 12:19:46,749 INFO L226 Difference]: Without dead ends: 4813 [2020-10-16 12:19:46,749 INFO L677 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 [2020-10-16 12:19:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-16 12:19:46,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-16 12:19:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-16 12:19:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-16 12:19:46,856 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-16 12:19:46,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:46,857 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-16 12:19:46,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:19:46,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-16 12:19:46,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:19:46,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:46,858 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:47,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:19:47,071 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:47,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:47,072 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-10-16 12:19:47,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:47,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735896523] [2020-10-16 12:19:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:47,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:47,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735896523] [2020-10-16 12:19:47,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633518625] [2020-10-16 12:19:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:19:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:47,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:19:47,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:19:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:47,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:19:47,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:19:47,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808385258] [2020-10-16 12:19:47,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:19:47,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:47,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:19:47,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:19:47,264 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-10-16 12:19:47,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:47,635 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-16 12:19:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:19:47,635 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-16 12:19:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:47,649 INFO L225 Difference]: With dead ends: 4942 [2020-10-16 12:19:47,650 INFO L226 Difference]: Without dead ends: 4925 [2020-10-16 12:19:47,650 INFO L677 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 [2020-10-16 12:19:47,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-16 12:19:47,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-16 12:19:47,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-16 12:19:47,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-16 12:19:47,832 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-16 12:19:47,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:47,833 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-16 12:19:47,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:19:47,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-16 12:19:47,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:19:47,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:47,834 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:48,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:19:48,049 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:48,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:48,049 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-10-16 12:19:48,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:48,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159320292] [2020-10-16 12:19:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:19:48,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159320292] [2020-10-16 12:19:48,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:48,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:19:48,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037973431] [2020-10-16 12:19:48,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:19:48,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:48,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:19:48,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:19:48,104 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-16 12:19:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:48,376 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-16 12:19:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:19:48,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 12:19:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:48,395 INFO L225 Difference]: With dead ends: 4934 [2020-10-16 12:19:48,395 INFO L226 Difference]: Without dead ends: 4917 [2020-10-16 12:19:48,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:19:48,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-16 12:19:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-16 12:19:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-16 12:19:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-16 12:19:48,521 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-16 12:19:48,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:48,522 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-16 12:19:48,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:19:48,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-16 12:19:48,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:19:48,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:48,524 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:48,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 12:19:48,524 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:48,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:48,525 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-10-16 12:19:48,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:48,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580967147] [2020-10-16 12:19:48,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:19:48,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580967147] [2020-10-16 12:19:48,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:48,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:19:48,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366319065] [2020-10-16 12:19:48,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:19:48,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:48,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:19:48,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:19:48,582 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-16 12:19:48,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:48,838 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-16 12:19:48,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:19:48,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 12:19:48,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:48,854 INFO L225 Difference]: With dead ends: 4774 [2020-10-16 12:19:48,855 INFO L226 Difference]: Without dead ends: 4757 [2020-10-16 12:19:48,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:19:48,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-16 12:19:48,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-16 12:19:48,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-16 12:19:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-16 12:19:48,956 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-16 12:19:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:48,957 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-16 12:19:48,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:19:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-16 12:19:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:19:48,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:48,959 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:48,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 12:19:48,960 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:48,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-10-16 12:19:48,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:48,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613194474] [2020-10-16 12:19:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:49,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613194474] [2020-10-16 12:19:49,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545626426] [2020-10-16 12:19:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:19:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:49,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:19:49,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:19:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:49,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:19:49,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:19:49,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286758119] [2020-10-16 12:19:49,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:19:49,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:49,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:19:49,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:19:49,345 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-10-16 12:19:50,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:50,155 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-16 12:19:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:19:50,155 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 12:19:50,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:50,169 INFO L225 Difference]: With dead ends: 6025 [2020-10-16 12:19:50,169 INFO L226 Difference]: Without dead ends: 6017 [2020-10-16 12:19:50,170 INFO L677 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 [2020-10-16 12:19:50,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-16 12:19:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-16 12:19:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-16 12:19:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-16 12:19:50,279 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-16 12:19:50,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:50,280 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-16 12:19:50,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:19:50,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-16 12:19:50,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:19:50,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:50,282 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:50,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 12:19:50,496 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:50,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:50,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-10-16 12:19:50,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:50,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726431528] [2020-10-16 12:19:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:19:50,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726431528] [2020-10-16 12:19:50,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331454027] [2020-10-16 12:19:50,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:19:50,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:19:50,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:19:50,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:19:50,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:19:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:19:50,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:19:50,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:19:50,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90314697] [2020-10-16 12:19:50,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:19:50,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:50,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:19:50,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:19:50,758 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-10-16 12:19:51,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:51,589 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-16 12:19:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:19:51,589 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 12:19:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:51,600 INFO L225 Difference]: With dead ends: 5914 [2020-10-16 12:19:51,600 INFO L226 Difference]: Without dead ends: 5903 [2020-10-16 12:19:51,601 INFO L677 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 [2020-10-16 12:19:51,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-16 12:19:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-16 12:19:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-16 12:19:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-16 12:19:51,698 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-16 12:19:51,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:51,699 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-16 12:19:51,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:19:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-16 12:19:51,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:19:51,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:51,702 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:51,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:19:51,916 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:51,916 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-10-16 12:19:51,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:51,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025322208] [2020-10-16 12:19:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:51,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025322208] [2020-10-16 12:19:51,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821719464] [2020-10-16 12:19:51,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:19:52,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:19:52,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:19:52,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:19:52,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:19:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:52,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:19:52,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:19:52,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832453938] [2020-10-16 12:19:52,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:19:52,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:52,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:19:52,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:19:52,169 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-10-16 12:19:52,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:52,957 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-16 12:19:52,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:19:52,958 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 12:19:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:52,969 INFO L225 Difference]: With dead ends: 5907 [2020-10-16 12:19:52,969 INFO L226 Difference]: Without dead ends: 5899 [2020-10-16 12:19:52,970 INFO L677 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 [2020-10-16 12:19:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-16 12:19:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-16 12:19:53,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-16 12:19:53,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-16 12:19:53,113 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-16 12:19:53,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:53,113 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-16 12:19:53,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:19:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-16 12:19:53,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:19:53,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:53,119 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:53,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-16 12:19:53,334 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:53,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:53,336 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-10-16 12:19:53,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:53,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426733971] [2020-10-16 12:19:53,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:53,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426733971] [2020-10-16 12:19:53,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566793618] [2020-10-16 12:19:53,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:19:53,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:19:53,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:19:53,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:19:53,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:19:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:53,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:19:53,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:19:53,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221930406] [2020-10-16 12:19:53,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:19:53,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:53,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:19:53,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:19:53,604 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-10-16 12:19:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:54,440 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-16 12:19:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:19:54,440 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 12:19:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:54,451 INFO L225 Difference]: With dead ends: 5835 [2020-10-16 12:19:54,451 INFO L226 Difference]: Without dead ends: 5824 [2020-10-16 12:19:54,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:19:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-16 12:19:54,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-16 12:19:54,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-16 12:19:54,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-16 12:19:54,547 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-16 12:19:54,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:54,547 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-16 12:19:54,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:19:54,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-16 12:19:54,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:19:54,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:54,550 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:54,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 12:19:54,765 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:54,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:54,765 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-10-16 12:19:54,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:54,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649041045] [2020-10-16 12:19:54,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:19:54,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649041045] [2020-10-16 12:19:54,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:54,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 12:19:54,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805375756] [2020-10-16 12:19:54,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:19:54,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:54,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:19:54,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:19:54,831 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-10-16 12:19:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:55,569 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-10-16 12:19:55,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:19:55,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 12:19:55,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:55,580 INFO L225 Difference]: With dead ends: 5820 [2020-10-16 12:19:55,580 INFO L226 Difference]: Without dead ends: 5812 [2020-10-16 12:19:55,581 INFO L677 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 [2020-10-16 12:19:55,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-10-16 12:19:55,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-10-16 12:19:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-10-16 12:19:55,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-10-16 12:19:55,648 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-10-16 12:19:55,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:55,648 INFO L481 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-10-16 12:19:55,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:19:55,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-10-16 12:19:55,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:19:55,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:55,650 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:55,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-16 12:19:55,650 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:55,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:55,651 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-10-16 12:19:55,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:55,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278089782] [2020-10-16 12:19:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:19:55,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278089782] [2020-10-16 12:19:55,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:55,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 12:19:55,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279297265] [2020-10-16 12:19:55,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:19:55,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:55,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:19:55,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:19:55,730 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-10-16 12:19:56,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:56,410 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-10-16 12:19:56,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:19:56,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 12:19:56,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:56,421 INFO L225 Difference]: With dead ends: 5717 [2020-10-16 12:19:56,421 INFO L226 Difference]: Without dead ends: 5705 [2020-10-16 12:19:56,422 INFO L677 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 [2020-10-16 12:19:56,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-10-16 12:19:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-10-16 12:19:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-10-16 12:19:56,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-10-16 12:19:56,505 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-10-16 12:19:56,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:56,506 INFO L481 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-10-16 12:19:56,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:19:56,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-10-16 12:19:56,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:19:56,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:56,508 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:56,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 12:19:56,508 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:56,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:56,509 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-10-16 12:19:56,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:56,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811340561] [2020-10-16 12:19:56,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:19:56,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811340561] [2020-10-16 12:19:56,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:56,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:56,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171261943] [2020-10-16 12:19:56,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:19:56,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:56,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:19:56,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:19:56,553 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-10-16 12:19:56,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:56,665 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-10-16 12:19:56,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:19:56,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 12:19:56,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:56,673 INFO L225 Difference]: With dead ends: 2762 [2020-10-16 12:19:56,673 INFO L226 Difference]: Without dead ends: 2746 [2020-10-16 12:19:56,674 INFO L677 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 [2020-10-16 12:19:56,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-10-16 12:19:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-10-16 12:19:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-16 12:19:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-16 12:19:56,735 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-16 12:19:56,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:56,735 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-16 12:19:56,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:19:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-16 12:19:56,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:19:56,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:56,738 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:56,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 12:19:56,739 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:19:56,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:56,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-10-16 12:19:56,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:56,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138814607] [2020-10-16 12:19:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:56,756 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:56,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:56,782 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:19:56,782 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:19:56,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 12:19:56,782 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:19:56,784 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:19:56,784 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 12:19:56,800 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,801 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,802 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,802 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,803 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,804 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,805 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,805 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,806 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,806 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,811 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,811 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,811 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,813 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,813 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,813 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,814 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,815 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,815 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,815 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,816 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,816 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,817 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,817 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,817 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,817 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,817 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,818 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,818 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,818 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,819 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,819 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,820 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,820 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,820 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,820 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,820 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,822 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,822 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,822 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,823 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,823 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,823 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,823 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,823 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,824 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,826 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:56,832 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:19:56,832 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 12:19:56,832 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:19:56,832 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:19:56,832 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:19:56,832 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:19:56,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:19:56,833 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:19:56,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:19:56,833 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:19:56,834 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:19:56,834 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-16 12:19:56,835 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-16 12:19:56,835 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-10-16 12:19:56,855 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-16 12:19:56,855 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 12:19:56,857 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. [2020-10-16 12:19:56,862 INFO L117 LiptonReduction]: Number of co-enabled transitions 2264 [2020-10-16 12:19:58,645 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-16 12:19:58,856 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-16 12:19:58,940 INFO L132 LiptonReduction]: Checked pairs total: 4038 [2020-10-16 12:19:58,940 INFO L134 LiptonReduction]: Total number of compositions: 111 [2020-10-16 12:19:58,940 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-16 12:19:59,392 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-16 12:19:59,392 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-16 12:19:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 12:19:59,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:59,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 12:19:59,393 INFO L429 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]=== [2020-10-16 12:19:59,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:59,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-10-16 12:19:59,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:59,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530840886] [2020-10-16 12:19:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:59,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530840886] [2020-10-16 12:19:59,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:59,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:19:59,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180003972] [2020-10-16 12:19:59,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:19:59,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:59,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:19:59,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:59,408 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-16 12:19:59,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:59,479 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-16 12:19:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:19:59,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 12:19:59,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:59,501 INFO L225 Difference]: With dead ends: 5844 [2020-10-16 12:19:59,501 INFO L226 Difference]: Without dead ends: 5479 [2020-10-16 12:19:59,502 INFO L677 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 [2020-10-16 12:19:59,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-16 12:19:59,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-16 12:19:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-16 12:19:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-16 12:19:59,795 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-16 12:19:59,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:59,795 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-16 12:19:59,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:19:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-16 12:19:59,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:19:59,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:59,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:59,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 12:19:59,797 INFO L429 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]=== [2020-10-16 12:19:59,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:59,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-10-16 12:19:59,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:59,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371600181] [2020-10-16 12:19:59,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:59,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371600181] [2020-10-16 12:19:59,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:59,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:59,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757079341] [2020-10-16 12:19:59,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:19:59,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:59,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:19:59,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:19:59,851 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-16 12:20:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:00,047 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-16 12:20:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:20:00,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 12:20:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:00,087 INFO L225 Difference]: With dead ends: 9673 [2020-10-16 12:20:00,087 INFO L226 Difference]: Without dead ends: 9666 [2020-10-16 12:20:00,089 INFO L677 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 [2020-10-16 12:20:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-16 12:20:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-16 12:20:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-16 12:20:00,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-16 12:20:00,405 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-16 12:20:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:00,405 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-16 12:20:00,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:20:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-16 12:20:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:20:00,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:00,406 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:00,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 12:20:00,407 INFO L429 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]=== [2020-10-16 12:20:00,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-10-16 12:20:00,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:00,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446958094] [2020-10-16 12:20:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:20:00,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446958094] [2020-10-16 12:20:00,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:00,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:20:00,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131874670] [2020-10-16 12:20:00,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:20:00,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:00,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:20:00,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:20:00,449 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-16 12:20:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:00,640 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-16 12:20:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:20:00,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 12:20:00,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:00,690 INFO L225 Difference]: With dead ends: 11081 [2020-10-16 12:20:00,691 INFO L226 Difference]: Without dead ends: 11068 [2020-10-16 12:20:00,694 INFO L677 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 [2020-10-16 12:20:01,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-16 12:20:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-16 12:20:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-16 12:20:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-16 12:20:01,249 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-16 12:20:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:01,249 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-16 12:20:01,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:20:01,249 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-16 12:20:01,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:20:01,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:01,250 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:01,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 12:20:01,251 INFO L429 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]=== [2020-10-16 12:20:01,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:01,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-10-16 12:20:01,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:01,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670949406] [2020-10-16 12:20:01,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:20:01,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670949406] [2020-10-16 12:20:01,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200458317] [2020-10-16 12:20:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:01,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:20:01,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:20:01,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:01,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:20:01,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70464052] [2020-10-16 12:20:01,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:20:01,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:01,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:20:01,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:20:01,443 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-10-16 12:20:01,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:01,827 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-16 12:20:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:20:01,828 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:20:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:01,872 INFO L225 Difference]: With dead ends: 16749 [2020-10-16 12:20:01,872 INFO L226 Difference]: Without dead ends: 16736 [2020-10-16 12:20:01,873 INFO L677 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 [2020-10-16 12:20:01,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-16 12:20:02,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-16 12:20:02,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-16 12:20:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-16 12:20:03,159 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-16 12:20:03,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:03,159 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-16 12:20:03,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:20:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-16 12:20:03,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:20:03,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:03,160 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:03,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:20:03,361 INFO L429 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]=== [2020-10-16 12:20:03,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:03,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-10-16 12:20:03,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:03,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621329931] [2020-10-16 12:20:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:20:03,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621329931] [2020-10-16 12:20:03,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:03,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:20:03,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284942286] [2020-10-16 12:20:03,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:20:03,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:03,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:20:03,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:20:03,427 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-16 12:20:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:03,780 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-16 12:20:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:20:03,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 12:20:03,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:03,826 INFO L225 Difference]: With dead ends: 17085 [2020-10-16 12:20:03,826 INFO L226 Difference]: Without dead ends: 17071 [2020-10-16 12:20:03,827 INFO L677 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 [2020-10-16 12:20:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-16 12:20:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-16 12:20:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-16 12:20:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-16 12:20:04,127 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-16 12:20:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:04,127 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-16 12:20:04,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:20:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-16 12:20:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:20:04,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:04,128 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:04,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 12:20:04,128 INFO L429 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]=== [2020-10-16 12:20:04,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:04,128 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-10-16 12:20:04,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:04,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238007557] [2020-10-16 12:20:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:20:04,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238007557] [2020-10-16 12:20:04,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:04,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:20:04,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703492091] [2020-10-16 12:20:04,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:20:04,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:04,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:20:04,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:20:04,175 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-16 12:20:04,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:04,328 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-16 12:20:04,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:20:04,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 12:20:04,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:04,362 INFO L225 Difference]: With dead ends: 12234 [2020-10-16 12:20:04,362 INFO L226 Difference]: Without dead ends: 12212 [2020-10-16 12:20:04,362 INFO L677 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 [2020-10-16 12:20:04,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-16 12:20:04,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-16 12:20:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-16 12:20:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-16 12:20:04,782 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-16 12:20:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:04,782 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-16 12:20:04,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:20:04,782 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-16 12:20:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:20:04,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:04,783 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:04,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 12:20:04,784 INFO L429 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]=== [2020-10-16 12:20:04,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:04,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-10-16 12:20:04,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:04,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289654666] [2020-10-16 12:20:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:20:04,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289654666] [2020-10-16 12:20:04,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909658100] [2020-10-16 12:20:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:04,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:20:04,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:20:05,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:05,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:20:05,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2397613] [2020-10-16 12:20:05,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:20:05,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:05,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:20:05,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:20:05,003 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-10-16 12:20:05,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:05,362 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-16 12:20:05,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:20:05,362 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-16 12:20:05,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:05,413 INFO L225 Difference]: With dead ends: 19016 [2020-10-16 12:20:05,413 INFO L226 Difference]: Without dead ends: 18998 [2020-10-16 12:20:05,414 INFO L677 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 [2020-10-16 12:20:05,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-16 12:20:05,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-16 12:20:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-16 12:20:05,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-16 12:20:05,760 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-16 12:20:05,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:05,760 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-16 12:20:05,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:20:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-16 12:20:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:20:05,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:05,761 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:05,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 12:20:05,962 INFO L429 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]=== [2020-10-16 12:20:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:05,963 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-10-16 12:20:05,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:05,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883492069] [2020-10-16 12:20:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:20:06,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883492069] [2020-10-16 12:20:06,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874224645] [2020-10-16 12:20:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:06,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:20:06,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:20:06,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:06,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:20:06,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556648581] [2020-10-16 12:20:06,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:20:06,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:06,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:20:06,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:20:06,197 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-10-16 12:20:06,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:06,825 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-10-16 12:20:06,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:20:06,826 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-16 12:20:06,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:06,923 INFO L225 Difference]: With dead ends: 19670 [2020-10-16 12:20:06,923 INFO L226 Difference]: Without dead ends: 19645 [2020-10-16 12:20:06,924 INFO L677 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 [2020-10-16 12:20:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-10-16 12:20:07,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-10-16 12:20:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-16 12:20:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-16 12:20:07,385 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-16 12:20:07,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:07,385 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-16 12:20:07,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:20:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-16 12:20:07,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:20:07,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:07,386 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:07,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 12:20:07,587 INFO L429 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]=== [2020-10-16 12:20:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:07,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-10-16 12:20:07,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:07,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807212060] [2020-10-16 12:20:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:20:07,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807212060] [2020-10-16 12:20:07,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:07,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:20:07,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529497722] [2020-10-16 12:20:07,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:20:07,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:07,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:20:07,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:20:07,635 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-10-16 12:20:08,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:08,004 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-16 12:20:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:20:08,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 12:20:08,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:08,053 INFO L225 Difference]: With dead ends: 19852 [2020-10-16 12:20:08,053 INFO L226 Difference]: Without dead ends: 19827 [2020-10-16 12:20:08,053 INFO L677 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 [2020-10-16 12:20:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-16 12:20:08,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-16 12:20:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-16 12:20:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-16 12:20:08,548 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-16 12:20:08,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:08,549 INFO L481 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-16 12:20:08,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:20:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-16 12:20:08,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:20:08,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:08,551 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:08,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 12:20:08,551 INFO L429 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]=== [2020-10-16 12:20:08,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:08,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-10-16 12:20:08,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:08,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675661364] [2020-10-16 12:20:08,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:20:08,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675661364] [2020-10-16 12:20:08,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:08,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:20:08,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333070878] [2020-10-16 12:20:08,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:20:08,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:08,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:20:08,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:20:08,606 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-10-16 12:20:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:08,962 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-16 12:20:08,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:20:08,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 12:20:08,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:09,010 INFO L225 Difference]: With dead ends: 19555 [2020-10-16 12:20:09,010 INFO L226 Difference]: Without dead ends: 19530 [2020-10-16 12:20:09,010 INFO L677 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 [2020-10-16 12:20:09,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-16 12:20:09,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-16 12:20:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-16 12:20:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-16 12:20:09,345 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-16 12:20:09,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:09,345 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-16 12:20:09,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:20:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-16 12:20:09,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:20:09,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:09,346 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:09,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 12:20:09,346 INFO L429 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]=== [2020-10-16 12:20:09,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:09,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-10-16 12:20:09,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:09,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457838182] [2020-10-16 12:20:09,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:20:09,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457838182] [2020-10-16 12:20:09,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902653287] [2020-10-16 12:20:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:09,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:09,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:20:09,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:09,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:09,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321339597] [2020-10-16 12:20:09,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:09,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:09,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:09,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:09,595 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-10-16 12:20:10,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:10,700 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-16 12:20:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:10,701 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 12:20:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:10,767 INFO L225 Difference]: With dead ends: 26969 [2020-10-16 12:20:10,767 INFO L226 Difference]: Without dead ends: 26957 [2020-10-16 12:20:10,768 INFO L677 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 [2020-10-16 12:20:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-16 12:20:11,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-10-16 12:20:11,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-16 12:20:11,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-10-16 12:20:11,171 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-10-16 12:20:11,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:11,171 INFO L481 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-10-16 12:20:11,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:11,171 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-10-16 12:20:11,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:20:11,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:11,172 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:11,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:20:11,373 INFO L429 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]=== [2020-10-16 12:20:11,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:11,373 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-10-16 12:20:11,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:11,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748639646] [2020-10-16 12:20:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:20:11,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748639646] [2020-10-16 12:20:11,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519720422] [2020-10-16 12:20:11,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:11,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:20:11,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:11,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:11,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:20:11,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:11,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:11,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030133975] [2020-10-16 12:20:11,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:11,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:11,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:11,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:11,642 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-10-16 12:20:12,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:12,595 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-10-16 12:20:12,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:12,596 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 12:20:12,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:12,664 INFO L225 Difference]: With dead ends: 26661 [2020-10-16 12:20:12,664 INFO L226 Difference]: Without dead ends: 26645 [2020-10-16 12:20:12,665 INFO L677 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 [2020-10-16 12:20:12,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-10-16 12:20:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-10-16 12:20:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-16 12:20:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-16 12:20:13,214 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-16 12:20:13,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:13,214 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-16 12:20:13,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:13,214 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-16 12:20:13,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:20:13,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:13,215 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:13,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-16 12:20:13,416 INFO L429 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]=== [2020-10-16 12:20:13,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:13,417 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-10-16 12:20:13,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:13,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265510946] [2020-10-16 12:20:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:20:13,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265510946] [2020-10-16 12:20:13,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379179092] [2020-10-16 12:20:13,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:13,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:20:13,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:13,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:13,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:20:13,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:13,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:13,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327757523] [2020-10-16 12:20:13,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:13,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:13,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:13,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:13,671 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-10-16 12:20:14,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:14,613 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-10-16 12:20:14,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:14,613 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 12:20:14,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:14,687 INFO L225 Difference]: With dead ends: 26686 [2020-10-16 12:20:14,687 INFO L226 Difference]: Without dead ends: 26674 [2020-10-16 12:20:14,688 INFO L677 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 [2020-10-16 12:20:14,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-10-16 12:20:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-10-16 12:20:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-16 12:20:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-16 12:20:15,089 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-16 12:20:15,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:15,090 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-16 12:20:15,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-16 12:20:15,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:20:15,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:15,091 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:15,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:20:15,292 INFO L429 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]=== [2020-10-16 12:20:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:15,292 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-10-16 12:20:15,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:15,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011600405] [2020-10-16 12:20:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:20:15,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011600405] [2020-10-16 12:20:15,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951173923] [2020-10-16 12:20:15,373 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:15,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:20:15,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:15,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:15,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:20:15,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:15,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:15,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484060663] [2020-10-16 12:20:15,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:15,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:15,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:15,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:15,701 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-10-16 12:20:16,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:16,690 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-10-16 12:20:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:16,691 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 12:20:16,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:16,761 INFO L225 Difference]: With dead ends: 26489 [2020-10-16 12:20:16,761 INFO L226 Difference]: Without dead ends: 26473 [2020-10-16 12:20:16,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:20:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-10-16 12:20:17,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-10-16 12:20:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-16 12:20:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-16 12:20:17,150 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-16 12:20:17,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:17,150 INFO L481 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-16 12:20:17,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-16 12:20:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:20:17,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:17,151 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:17,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-16 12:20:17,352 INFO L429 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]=== [2020-10-16 12:20:17,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:17,353 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-10-16 12:20:17,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:17,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815883364] [2020-10-16 12:20:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:20:17,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815883364] [2020-10-16 12:20:17,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:17,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:20:17,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786277466] [2020-10-16 12:20:17,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:20:17,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:17,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:20:17,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:20:17,394 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-10-16 12:20:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:17,548 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-10-16 12:20:17,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:20:17,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 12:20:17,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:17,594 INFO L225 Difference]: With dead ends: 13251 [2020-10-16 12:20:17,595 INFO L226 Difference]: Without dead ends: 13220 [2020-10-16 12:20:17,595 INFO L677 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 [2020-10-16 12:20:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-16 12:20:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-10-16 12:20:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-10-16 12:20:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-10-16 12:20:18,097 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-10-16 12:20:18,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:18,097 INFO L481 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-10-16 12:20:18,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:20:18,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-10-16 12:20:18,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:20:18,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:18,099 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:18,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-16 12:20:18,099 INFO L429 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]=== [2020-10-16 12:20:18,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:18,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-10-16 12:20:18,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:18,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633546749] [2020-10-16 12:20:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:20:18,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633546749] [2020-10-16 12:20:18,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:18,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 12:20:18,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735774823] [2020-10-16 12:20:18,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:20:18,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:18,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:20:18,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:20:18,167 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-10-16 12:20:19,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:19,011 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-10-16 12:20:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:19,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 12:20:19,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:19,097 INFO L225 Difference]: With dead ends: 29788 [2020-10-16 12:20:19,098 INFO L226 Difference]: Without dead ends: 29770 [2020-10-16 12:20:19,098 INFO L677 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 [2020-10-16 12:20:19,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-10-16 12:20:19,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-10-16 12:20:19,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-10-16 12:20:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-10-16 12:20:19,552 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-10-16 12:20:19,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:19,552 INFO L481 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-10-16 12:20:19,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:20:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-10-16 12:20:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:20:19,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:19,554 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:19,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-16 12:20:19,555 INFO L429 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]=== [2020-10-16 12:20:19,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:19,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-10-16 12:20:19,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:19,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335016595] [2020-10-16 12:20:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:20:19,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335016595] [2020-10-16 12:20:19,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:19,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 12:20:19,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582624148] [2020-10-16 12:20:19,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:20:19,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:19,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:20:19,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:20:19,636 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-10-16 12:20:20,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:20,528 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-10-16 12:20:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:20,528 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 12:20:20,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:20,603 INFO L225 Difference]: With dead ends: 29379 [2020-10-16 12:20:20,603 INFO L226 Difference]: Without dead ends: 29356 [2020-10-16 12:20:20,603 INFO L677 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 [2020-10-16 12:20:20,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-16 12:20:21,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-10-16 12:20:21,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-16 12:20:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-16 12:20:21,236 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-16 12:20:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:21,236 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-16 12:20:21,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:20:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-16 12:20:21,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:20:21,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:21,238 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:21,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-16 12:20:21,238 INFO L429 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]=== [2020-10-16 12:20:21,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:21,238 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-10-16 12:20:21,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:21,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377523697] [2020-10-16 12:20:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:21,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377523697] [2020-10-16 12:20:21,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267931267] [2020-10-16 12:20:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:21,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:20:21,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:21,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:21,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:20:21,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792095584] [2020-10-16 12:20:21,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:20:21,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:21,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:20:21,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:20:21,423 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-10-16 12:20:21,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:21,839 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-16 12:20:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:20:21,839 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-16 12:20:21,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:21,891 INFO L225 Difference]: With dead ends: 19727 [2020-10-16 12:20:21,891 INFO L226 Difference]: Without dead ends: 19703 [2020-10-16 12:20:21,891 INFO L677 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 [2020-10-16 12:20:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-16 12:20:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-16 12:20:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-16 12:20:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-16 12:20:22,233 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-16 12:20:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:22,234 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-16 12:20:22,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:20:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-16 12:20:22,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:20:22,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:22,236 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:22,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 12:20:22,442 INFO L429 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]=== [2020-10-16 12:20:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:22,443 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-10-16 12:20:22,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:22,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486834656] [2020-10-16 12:20:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:20:22,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486834656] [2020-10-16 12:20:22,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339438358] [2020-10-16 12:20:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:22,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:20:22,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:20:22,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:22,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:20:22,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552237180] [2020-10-16 12:20:22,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:20:22,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:22,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:20:22,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:20:22,629 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-10-16 12:20:23,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:23,009 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-10-16 12:20:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:20:23,010 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-16 12:20:23,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:23,062 INFO L225 Difference]: With dead ends: 20694 [2020-10-16 12:20:23,063 INFO L226 Difference]: Without dead ends: 20666 [2020-10-16 12:20:23,063 INFO L677 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 [2020-10-16 12:20:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-10-16 12:20:23,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-10-16 12:20:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-16 12:20:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-16 12:20:23,610 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-16 12:20:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:23,611 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-16 12:20:23,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:20:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-16 12:20:23,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:20:23,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:23,615 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:23,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:20:23,816 INFO L429 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]=== [2020-10-16 12:20:23,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:23,817 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-10-16 12:20:23,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:23,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292436988] [2020-10-16 12:20:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:23,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:23,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292436988] [2020-10-16 12:20:23,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940787092] [2020-10-16 12:20:23,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:23,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:20:23,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:24,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:24,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:20:24,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764065167] [2020-10-16 12:20:24,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:20:24,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:24,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:20:24,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:20:24,031 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-10-16 12:20:24,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:24,444 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-10-16 12:20:24,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:20:24,444 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-16 12:20:24,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:24,499 INFO L225 Difference]: With dead ends: 21396 [2020-10-16 12:20:24,500 INFO L226 Difference]: Without dead ends: 21359 [2020-10-16 12:20:24,500 INFO L677 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 [2020-10-16 12:20:24,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-10-16 12:20:24,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-10-16 12:20:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-16 12:20:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-16 12:20:24,870 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-16 12:20:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:24,870 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-16 12:20:24,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:20:24,870 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-16 12:20:24,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:20:24,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:24,874 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:25,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-16 12:20:25,090 INFO L429 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]=== [2020-10-16 12:20:25,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:25,090 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-10-16 12:20:25,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:25,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253513866] [2020-10-16 12:20:25,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:20:25,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253513866] [2020-10-16 12:20:25,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:25,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:20:25,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527395922] [2020-10-16 12:20:25,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:20:25,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:25,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:20:25,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:20:25,137 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-16 12:20:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:25,519 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-10-16 12:20:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:20:25,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 12:20:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:25,572 INFO L225 Difference]: With dead ends: 21489 [2020-10-16 12:20:25,572 INFO L226 Difference]: Without dead ends: 21452 [2020-10-16 12:20:25,573 INFO L677 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 [2020-10-16 12:20:25,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-10-16 12:20:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-10-16 12:20:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-16 12:20:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-16 12:20:25,941 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-16 12:20:25,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:25,941 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-16 12:20:25,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:20:25,941 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-16 12:20:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:20:25,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:25,944 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:25,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-16 12:20:25,944 INFO L429 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]=== [2020-10-16 12:20:25,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:25,945 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-10-16 12:20:25,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:25,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2427325] [2020-10-16 12:20:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:20:25,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2427325] [2020-10-16 12:20:25,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:25,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:20:25,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746708570] [2020-10-16 12:20:25,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:20:25,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:25,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:20:25,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:20:25,998 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-16 12:20:26,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:26,387 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-10-16 12:20:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:20:26,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 12:20:26,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:26,439 INFO L225 Difference]: With dead ends: 21198 [2020-10-16 12:20:26,439 INFO L226 Difference]: Without dead ends: 21161 [2020-10-16 12:20:26,440 INFO L677 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 [2020-10-16 12:20:26,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-10-16 12:20:26,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-10-16 12:20:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-16 12:20:26,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-16 12:20:26,934 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-16 12:20:26,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:26,935 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-16 12:20:26,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:20:26,935 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-16 12:20:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:20:26,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:26,937 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:26,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-16 12:20:26,937 INFO L429 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]=== [2020-10-16 12:20:26,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:26,937 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-10-16 12:20:26,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:26,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053614631] [2020-10-16 12:20:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:20:26,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053614631] [2020-10-16 12:20:26,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:26,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:20:26,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329482255] [2020-10-16 12:20:26,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:20:26,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:26,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:20:26,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:20:26,986 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-16 12:20:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:27,418 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-10-16 12:20:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:20:27,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 12:20:27,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:27,492 INFO L225 Difference]: With dead ends: 21067 [2020-10-16 12:20:27,493 INFO L226 Difference]: Without dead ends: 21030 [2020-10-16 12:20:27,493 INFO L677 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 [2020-10-16 12:20:27,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-10-16 12:20:27,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-10-16 12:20:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-16 12:20:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-16 12:20:27,868 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-16 12:20:27,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:27,868 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-16 12:20:27,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:20:27,868 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-16 12:20:27,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:27,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:27,871 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:27,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-16 12:20:27,871 INFO L429 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]=== [2020-10-16 12:20:27,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:27,872 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-10-16 12:20:27,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:27,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228898568] [2020-10-16 12:20:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:20:27,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228898568] [2020-10-16 12:20:27,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691298034] [2020-10-16 12:20:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:28,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:28,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:20:28,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:28,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:28,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309943549] [2020-10-16 12:20:28,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:28,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:28,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:28,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:28,122 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-10-16 12:20:29,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:29,222 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-16 12:20:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:29,223 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:20:29,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:29,298 INFO L225 Difference]: With dead ends: 30145 [2020-10-16 12:20:29,298 INFO L226 Difference]: Without dead ends: 30125 [2020-10-16 12:20:29,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:20:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-16 12:20:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-10-16 12:20:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-16 12:20:29,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-10-16 12:20:29,944 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-10-16 12:20:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:29,944 INFO L481 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-10-16 12:20:29,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:29,944 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-10-16 12:20:29,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:29,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:29,947 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:30,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-16 12:20:30,148 INFO L429 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]=== [2020-10-16 12:20:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:30,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-10-16 12:20:30,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:30,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490857027] [2020-10-16 12:20:30,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:20:30,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490857027] [2020-10-16 12:20:30,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545789607] [2020-10-16 12:20:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:30,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:30,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:30,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:20:30,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:30,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:30,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605879728] [2020-10-16 12:20:30,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:30,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:30,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:30,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:30,442 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-10-16 12:20:31,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:31,385 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-10-16 12:20:31,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:31,386 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:20:31,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:31,456 INFO L225 Difference]: With dead ends: 29696 [2020-10-16 12:20:31,456 INFO L226 Difference]: Without dead ends: 29676 [2020-10-16 12:20:31,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:20:31,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-10-16 12:20:31,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-10-16 12:20:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-16 12:20:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-16 12:20:31,894 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-16 12:20:31,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:31,894 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-16 12:20:31,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-16 12:20:31,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:31,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:31,897 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:32,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-16 12:20:32,098 INFO L429 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]=== [2020-10-16 12:20:32,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:32,099 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-10-16 12:20:32,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:32,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779820734] [2020-10-16 12:20:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:32,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779820734] [2020-10-16 12:20:32,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605138190] [2020-10-16 12:20:32,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:32,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:20:32,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:32,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:32,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:32,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:32,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:32,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104067119] [2020-10-16 12:20:32,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:32,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:32,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:32,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:32,358 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-10-16 12:20:33,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:33,332 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-16 12:20:33,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:33,333 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:20:33,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:33,407 INFO L225 Difference]: With dead ends: 29267 [2020-10-16 12:20:33,407 INFO L226 Difference]: Without dead ends: 29245 [2020-10-16 12:20:33,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:20:33,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-16 12:20:33,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-16 12:20:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-16 12:20:34,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-16 12:20:34,017 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-16 12:20:34,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:34,017 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-16 12:20:34,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:34,017 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-16 12:20:34,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:34,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:34,020 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:34,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-16 12:20:34,221 INFO L429 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]=== [2020-10-16 12:20:34,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:34,222 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-10-16 12:20:34,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:34,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204601713] [2020-10-16 12:20:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:34,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204601713] [2020-10-16 12:20:34,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074092480] [2020-10-16 12:20:34,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:34,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:20:34,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:34,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:34,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:34,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:34,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:34,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071061430] [2020-10-16 12:20:34,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:34,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:34,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:34,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:34,467 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-10-16 12:20:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:35,578 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-16 12:20:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:35,578 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:20:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:35,645 INFO L225 Difference]: With dead ends: 28920 [2020-10-16 12:20:35,646 INFO L226 Difference]: Without dead ends: 28898 [2020-10-16 12:20:35,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:20:35,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-16 12:20:36,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-16 12:20:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-16 12:20:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-16 12:20:36,086 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-16 12:20:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:36,086 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-16 12:20:36,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-16 12:20:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:36,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:36,089 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:36,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:20:36,290 INFO L429 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]=== [2020-10-16 12:20:36,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:36,291 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-10-16 12:20:36,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:36,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998987889] [2020-10-16 12:20:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-16 12:20:36,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998987889] [2020-10-16 12:20:36,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291569611] [2020-10-16 12:20:36,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:36,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:20:36,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:36,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:36,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-16 12:20:36,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:36,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:36,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797403242] [2020-10-16 12:20:36,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:36,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:36,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:36,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:36,541 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-10-16 12:20:37,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:37,489 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-10-16 12:20:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:37,490 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:20:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:37,556 INFO L225 Difference]: With dead ends: 29038 [2020-10-16 12:20:37,556 INFO L226 Difference]: Without dead ends: 29018 [2020-10-16 12:20:37,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:20:37,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-10-16 12:20:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-10-16 12:20:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-16 12:20:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-10-16 12:20:38,167 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-10-16 12:20:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:38,167 INFO L481 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-10-16 12:20:38,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-10-16 12:20:38,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:38,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:38,170 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:38,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-16 12:20:38,371 INFO L429 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]=== [2020-10-16 12:20:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:38,372 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-10-16 12:20:38,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:38,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181713159] [2020-10-16 12:20:38,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:20:38,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181713159] [2020-10-16 12:20:38,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104906054] [2020-10-16 12:20:38,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:38,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:38,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:20:38,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:38,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:38,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097010340] [2020-10-16 12:20:38,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:38,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:38,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:38,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:38,620 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-10-16 12:20:39,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:39,710 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-10-16 12:20:39,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:39,710 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:20:39,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:39,780 INFO L225 Difference]: With dead ends: 29417 [2020-10-16 12:20:39,780 INFO L226 Difference]: Without dead ends: 29397 [2020-10-16 12:20:39,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:20:39,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-10-16 12:20:40,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-10-16 12:20:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-10-16 12:20:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-10-16 12:20:40,212 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-10-16 12:20:40,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:40,212 INFO L481 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-10-16 12:20:40,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:40,212 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-10-16 12:20:40,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:40,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:40,215 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:40,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:20:40,417 INFO L429 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]=== [2020-10-16 12:20:40,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:40,417 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-10-16 12:20:40,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:40,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407950668] [2020-10-16 12:20:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:20:40,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407950668] [2020-10-16 12:20:40,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711561528] [2020-10-16 12:20:40,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:40,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:20:40,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:40,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:40,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:20:40,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:40,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:40,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331814013] [2020-10-16 12:20:40,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:40,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:40,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:40,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:40,722 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-10-16 12:20:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:41,962 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-10-16 12:20:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:41,963 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:20:41,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:42,047 INFO L225 Difference]: With dead ends: 29064 [2020-10-16 12:20:42,047 INFO L226 Difference]: Without dead ends: 29037 [2020-10-16 12:20:42,048 INFO L677 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 [2020-10-16 12:20:42,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-10-16 12:20:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-10-16 12:20:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-10-16 12:20:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-10-16 12:20:42,470 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-10-16 12:20:42,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:42,470 INFO L481 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-10-16 12:20:42,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-10-16 12:20:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:42,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:42,474 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:42,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-10-16 12:20:42,675 INFO L429 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]=== [2020-10-16 12:20:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-10-16 12:20:42,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:42,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909834625] [2020-10-16 12:20:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:20:42,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909834625] [2020-10-16 12:20:42,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548589218] [2020-10-16 12:20:42,741 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:42,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:20:42,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:42,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:42,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:20:42,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:42,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:42,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145971098] [2020-10-16 12:20:42,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:42,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:42,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:42,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:42,924 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-10-16 12:20:43,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:43,991 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-10-16 12:20:43,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:43,991 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:20:43,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:44,059 INFO L225 Difference]: With dead ends: 28523 [2020-10-16 12:20:44,059 INFO L226 Difference]: Without dead ends: 28501 [2020-10-16 12:20:44,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:20:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-10-16 12:20:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-10-16 12:20:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-16 12:20:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-10-16 12:20:44,475 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-10-16 12:20:44,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:44,475 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-10-16 12:20:44,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:44,476 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-10-16 12:20:44,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:44,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:44,480 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:44,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:20:44,688 INFO L429 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]=== [2020-10-16 12:20:44,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:44,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-10-16 12:20:44,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:44,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851725106] [2020-10-16 12:20:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:44,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851725106] [2020-10-16 12:20:44,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162480843] [2020-10-16 12:20:44,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:44,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:20:44,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:44,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:44,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:44,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:44,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:44,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334940136] [2020-10-16 12:20:44,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:44,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:44,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:44,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:44,930 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-10-16 12:20:45,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:45,854 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-16 12:20:45,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:45,855 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:20:45,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:45,924 INFO L225 Difference]: With dead ends: 28636 [2020-10-16 12:20:45,925 INFO L226 Difference]: Without dead ends: 28616 [2020-10-16 12:20:45,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:20:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-16 12:20:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-10-16 12:20:46,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-10-16 12:20:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-10-16 12:20:46,342 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-10-16 12:20:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:46,342 INFO L481 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-10-16 12:20:46,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:46,342 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-10-16 12:20:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:46,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:46,345 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:46,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-16 12:20:46,552 INFO L429 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]=== [2020-10-16 12:20:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:46,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-10-16 12:20:46,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:46,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91431128] [2020-10-16 12:20:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:46,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91431128] [2020-10-16 12:20:46,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568514275] [2020-10-16 12:20:46,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:46,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:20:46,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:46,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:46,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:46,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:46,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:46,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303301036] [2020-10-16 12:20:46,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:46,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:46,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:46,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:46,879 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-10-16 12:20:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:47,875 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-16 12:20:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:47,876 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:20:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:47,947 INFO L225 Difference]: With dead ends: 28297 [2020-10-16 12:20:47,948 INFO L226 Difference]: Without dead ends: 28277 [2020-10-16 12:20:47,948 INFO L677 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 [2020-10-16 12:20:48,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-16 12:20:48,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-10-16 12:20:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-16 12:20:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-10-16 12:20:48,528 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-10-16 12:20:48,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:48,528 INFO L481 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-10-16 12:20:48,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-10-16 12:20:48,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:48,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:48,532 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:48,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:20:48,732 INFO L429 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]=== [2020-10-16 12:20:48,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:48,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-10-16 12:20:48,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:48,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888625771] [2020-10-16 12:20:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:48,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888625771] [2020-10-16 12:20:48,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206937990] [2020-10-16 12:20:48,802 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:48,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:20:48,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:48,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:48,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:48,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:48,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:48,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121868880] [2020-10-16 12:20:48,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:48,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:48,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:48,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:48,981 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-10-16 12:20:50,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:50,092 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-16 12:20:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:50,092 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:20:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:50,159 INFO L225 Difference]: With dead ends: 28565 [2020-10-16 12:20:50,160 INFO L226 Difference]: Without dead ends: 28538 [2020-10-16 12:20:50,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:20:50,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-16 12:20:50,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-16 12:20:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-16 12:20:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-16 12:20:50,587 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-16 12:20:50,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:50,588 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-16 12:20:50,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-16 12:20:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:50,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:50,591 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:50,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-16 12:20:50,800 INFO L429 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]=== [2020-10-16 12:20:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:50,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-10-16 12:20:50,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:50,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320175781] [2020-10-16 12:20:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:50,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320175781] [2020-10-16 12:20:50,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576985371] [2020-10-16 12:20:50,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:20:50,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:20:50,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:50,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:20:50,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:20:51,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:51,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:20:51,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847791764] [2020-10-16 12:20:51,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:20:51,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:51,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:20:51,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:20:51,087 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-10-16 12:20:52,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:52,185 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-16 12:20:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:52,186 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:20:52,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:52,255 INFO L225 Difference]: With dead ends: 28213 [2020-10-16 12:20:52,255 INFO L226 Difference]: Without dead ends: 28186 [2020-10-16 12:20:52,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:20:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-16 12:20:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-16 12:20:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-16 12:20:52,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-16 12:20:52,661 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-16 12:20:52,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:52,662 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-16 12:20:52,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:20:52,662 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-16 12:20:52,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:52,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:52,665 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:52,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:20:52,866 INFO L429 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]=== [2020-10-16 12:20:52,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:52,866 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-10-16 12:20:52,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:52,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694122608] [2020-10-16 12:20:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:20:52,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694122608] [2020-10-16 12:20:52,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:52,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 12:20:52,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943706532] [2020-10-16 12:20:52,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:20:52,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:52,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:20:52,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:20:52,929 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-10-16 12:20:54,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:54,030 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-10-16 12:20:54,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:54,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 12:20:54,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:54,101 INFO L225 Difference]: With dead ends: 28226 [2020-10-16 12:20:54,102 INFO L226 Difference]: Without dead ends: 28206 [2020-10-16 12:20:54,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:20:54,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-10-16 12:20:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-10-16 12:20:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-16 12:20:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-10-16 12:20:54,491 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-10-16 12:20:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:54,491 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-10-16 12:20:54,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:20:54,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-10-16 12:20:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:54,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:54,495 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:54,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-16 12:20:54,495 INFO L429 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]=== [2020-10-16 12:20:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:54,496 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-10-16 12:20:54,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:54,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904897660] [2020-10-16 12:20:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:20:54,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904897660] [2020-10-16 12:20:54,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:54,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 12:20:54,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053623447] [2020-10-16 12:20:54,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:20:54,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:54,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:20:54,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:20:54,575 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-10-16 12:20:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:55,463 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-10-16 12:20:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:55,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 12:20:55,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:55,537 INFO L225 Difference]: With dead ends: 27801 [2020-10-16 12:20:55,537 INFO L226 Difference]: Without dead ends: 27781 [2020-10-16 12:20:55,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:20:55,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-10-16 12:20:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-10-16 12:20:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-10-16 12:20:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-10-16 12:20:55,939 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-10-16 12:20:55,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:55,939 INFO L481 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-10-16 12:20:55,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:20:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-10-16 12:20:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:55,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:55,942 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:55,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-16 12:20:55,943 INFO L429 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]=== [2020-10-16 12:20:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:55,943 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-10-16 12:20:55,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:55,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877749515] [2020-10-16 12:20:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:20:56,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877749515] [2020-10-16 12:20:56,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:56,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 12:20:56,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675509987] [2020-10-16 12:20:56,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:20:56,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:56,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:20:56,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:20:56,025 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-10-16 12:20:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:56,924 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-10-16 12:20:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:56,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 12:20:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:56,990 INFO L225 Difference]: With dead ends: 27548 [2020-10-16 12:20:56,991 INFO L226 Difference]: Without dead ends: 27521 [2020-10-16 12:20:56,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:20:57,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-10-16 12:20:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-10-16 12:20:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-10-16 12:20:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-10-16 12:20:57,387 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-10-16 12:20:57,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:57,387 INFO L481 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-10-16 12:20:57,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:20:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-10-16 12:20:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:57,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:57,390 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:57,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-16 12:20:57,390 INFO L429 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]=== [2020-10-16 12:20:57,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:57,391 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-10-16 12:20:57,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:57,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132664997] [2020-10-16 12:20:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:20:57,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132664997] [2020-10-16 12:20:57,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:57,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 12:20:57,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515701861] [2020-10-16 12:20:57,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:20:57,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:57,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:20:57,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:20:57,456 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-10-16 12:20:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:58,352 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-10-16 12:20:58,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:58,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 12:20:58,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:58,414 INFO L225 Difference]: With dead ends: 27167 [2020-10-16 12:20:58,414 INFO L226 Difference]: Without dead ends: 27147 [2020-10-16 12:20:58,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:20:58,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-10-16 12:20:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-10-16 12:20:58,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-10-16 12:20:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-10-16 12:20:58,940 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-10-16 12:20:58,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:58,941 INFO L481 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-10-16 12:20:58,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:20:58,941 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-10-16 12:20:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:20:58,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:58,943 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:58,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-16 12:20:58,944 INFO L429 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]=== [2020-10-16 12:20:58,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:58,944 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-10-16 12:20:58,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:58,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480856767] [2020-10-16 12:20:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:20:59,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480856767] [2020-10-16 12:20:59,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:59,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 12:20:59,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235202651] [2020-10-16 12:20:59,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:20:59,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:59,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:20:59,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:20:59,006 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-10-16 12:20:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:59,937 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-10-16 12:20:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:20:59,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 12:20:59,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:00,007 INFO L225 Difference]: With dead ends: 26955 [2020-10-16 12:21:00,007 INFO L226 Difference]: Without dead ends: 26928 [2020-10-16 12:21:00,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:21:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-10-16 12:21:00,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-10-16 12:21:00,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-10-16 12:21:00,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-10-16 12:21:00,402 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-10-16 12:21:00,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:00,403 INFO L481 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-10-16 12:21:00,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:21:00,403 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-10-16 12:21:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:21:00,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:00,406 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:00,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-16 12:21:00,406 INFO L429 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]=== [2020-10-16 12:21:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-10-16 12:21:00,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:00,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161884049] [2020-10-16 12:21:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:21:00,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161884049] [2020-10-16 12:21:00,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:00,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 12:21:00,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667839231] [2020-10-16 12:21:00,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:21:00,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:00,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:21:00,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:21:00,490 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-10-16 12:21:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:01,503 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-10-16 12:21:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:21:01,504 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 12:21:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:01,574 INFO L225 Difference]: With dead ends: 26632 [2020-10-16 12:21:01,574 INFO L226 Difference]: Without dead ends: 26605 [2020-10-16 12:21:01,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:21:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-10-16 12:21:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-10-16 12:21:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-10-16 12:21:01,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-10-16 12:21:01,955 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-10-16 12:21:01,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:01,955 INFO L481 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-10-16 12:21:01,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:21:01,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-10-16 12:21:01,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:21:01,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:01,958 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:01,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-16 12:21:01,958 INFO L429 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]=== [2020-10-16 12:21:01,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:01,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-10-16 12:21:01,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:01,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175317776] [2020-10-16 12:21:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:01,990 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-16 12:21:01,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175317776] [2020-10-16 12:21:01,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:01,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:21:01,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989166048] [2020-10-16 12:21:01,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:21:01,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:01,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:21:01,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:21:01,993 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-10-16 12:21:02,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:02,156 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-10-16 12:21:02,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:21:02,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-16 12:21:02,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:02,187 INFO L225 Difference]: With dead ends: 11919 [2020-10-16 12:21:02,187 INFO L226 Difference]: Without dead ends: 11887 [2020-10-16 12:21:02,187 INFO L677 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 [2020-10-16 12:21:02,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-10-16 12:21:02,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-10-16 12:21:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-16 12:21:02,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-16 12:21:02,425 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-16 12:21:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:02,425 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-16 12:21:02,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:21:02,426 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-16 12:21:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:21:02,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:02,429 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:02,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-16 12:21:02,429 INFO L429 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]=== [2020-10-16 12:21:02,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-10-16 12:21:02,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:02,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616658886] [2020-10-16 12:21:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:21:02,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:21:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:21:02,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:21:02,447 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:21:02,447 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:21:02,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-16 12:21:02,448 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:21:02,448 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:21:02,449 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-16 12:21:02,473 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,473 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,473 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,473 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,474 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,474 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,474 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,474 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,474 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,474 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,474 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,474 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,475 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,475 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,476 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,476 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,477 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,477 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,478 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,478 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,478 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,478 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,478 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,478 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,478 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,480 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,480 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,480 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,480 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,482 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,482 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,482 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,482 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,482 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,482 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,482 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,489 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,489 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,491 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,491 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,491 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,491 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,491 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,492 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,493 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,493 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,493 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,493 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,494 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,494 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,494 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,494 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,495 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,496 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,496 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:02,507 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:21:02,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-16 12:21:02,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:21:02,508 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:21:02,508 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:21:02,508 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:21:02,508 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:21:02,508 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:21:02,508 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:21:02,508 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:21:02,510 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:21:02,510 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-16 12:21:02,510 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-16 12:21:02,510 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-10-16 12:21:02,530 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-10-16 12:21:02,530 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 12:21:02,532 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. [2020-10-16 12:21:02,537 INFO L117 LiptonReduction]: Number of co-enabled transitions 2832 [2020-10-16 12:21:04,437 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-16 12:21:04,830 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 12:21:04,984 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 12:21:04,989 INFO L132 LiptonReduction]: Checked pairs total: 4694 [2020-10-16 12:21:04,989 INFO L134 LiptonReduction]: Total number of compositions: 121 [2020-10-16 12:21:04,990 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-16 12:21:06,693 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-16 12:21:06,693 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-16 12:21:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 12:21:06,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:06,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 12:21:06,693 INFO L429 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]=== [2020-10-16 12:21:06,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:06,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-10-16 12:21:06,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:06,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929682333] [2020-10-16 12:21:06,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:06,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929682333] [2020-10-16 12:21:06,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:06,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:21:06,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543599570] [2020-10-16 12:21:06,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:21:06,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:06,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:21:06,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:21:06,703 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-16 12:21:06,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:06,875 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-16 12:21:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:21:06,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 12:21:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:06,926 INFO L225 Difference]: With dead ends: 17885 [2020-10-16 12:21:06,926 INFO L226 Difference]: Without dead ends: 16791 [2020-10-16 12:21:06,926 INFO L677 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 [2020-10-16 12:21:07,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-16 12:21:07,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-16 12:21:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-16 12:21:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-16 12:21:07,726 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-16 12:21:07,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:07,727 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-16 12:21:07,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:21:07,727 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-16 12:21:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:21:07,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:07,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:07,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-16 12:21:07,727 INFO L429 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]=== [2020-10-16 12:21:07,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:07,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-10-16 12:21:07,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:07,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128789993] [2020-10-16 12:21:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:07,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128789993] [2020-10-16 12:21:07,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:07,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:21:07,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826665438] [2020-10-16 12:21:07,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:21:07,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:07,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:21:07,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:21:07,749 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-16 12:21:08,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:08,013 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-16 12:21:08,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:21:08,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 12:21:08,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:08,108 INFO L225 Difference]: With dead ends: 30985 [2020-10-16 12:21:08,109 INFO L226 Difference]: Without dead ends: 30977 [2020-10-16 12:21:08,109 INFO L677 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 [2020-10-16 12:21:10,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-16 12:21:10,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-16 12:21:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-16 12:21:10,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-16 12:21:10,875 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-16 12:21:10,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:10,875 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-16 12:21:10,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:21:10,875 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-16 12:21:10,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:21:10,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:10,876 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:10,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-16 12:21:10,876 INFO L429 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]=== [2020-10-16 12:21:10,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:10,877 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-10-16 12:21:10,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:10,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115184859] [2020-10-16 12:21:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:10,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115184859] [2020-10-16 12:21:10,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:10,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:21:10,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647605703] [2020-10-16 12:21:10,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:21:10,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:10,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:21:10,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:21:10,905 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-16 12:21:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:11,191 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-16 12:21:11,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:21:11,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 12:21:11,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:11,306 INFO L225 Difference]: With dead ends: 36296 [2020-10-16 12:21:11,307 INFO L226 Difference]: Without dead ends: 36280 [2020-10-16 12:21:11,307 INFO L677 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 [2020-10-16 12:21:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-16 12:21:12,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-16 12:21:12,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-16 12:21:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-16 12:21:12,536 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-16 12:21:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:12,536 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-16 12:21:12,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:21:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-16 12:21:12,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:21:12,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:12,537 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:12,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-16 12:21:12,537 INFO L429 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]=== [2020-10-16 12:21:12,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:12,537 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-10-16 12:21:12,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:12,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462625523] [2020-10-16 12:21:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:12,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462625523] [2020-10-16 12:21:12,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381395851] [2020-10-16 12:21:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:12,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:21:12,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:12,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:12,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:21:12,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950818118] [2020-10-16 12:21:12,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:21:12,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:12,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:21:12,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:21:12,737 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-10-16 12:21:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:13,419 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-16 12:21:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:21:13,420 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:21:13,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:15,792 INFO L225 Difference]: With dead ends: 56720 [2020-10-16 12:21:15,792 INFO L226 Difference]: Without dead ends: 56704 [2020-10-16 12:21:15,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:21:16,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-16 12:21:17,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-16 12:21:17,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-16 12:21:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-16 12:21:17,280 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-16 12:21:17,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:17,281 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-16 12:21:17,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:21:17,281 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-16 12:21:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:21:17,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:17,281 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:17,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-16 12:21:17,482 INFO L429 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]=== [2020-10-16 12:21:17,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:17,483 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-10-16 12:21:17,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:17,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939469254] [2020-10-16 12:21:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:17,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939469254] [2020-10-16 12:21:17,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:17,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:21:17,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712438479] [2020-10-16 12:21:17,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:21:17,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:17,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:21:17,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:21:17,519 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-16 12:21:18,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:18,132 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-16 12:21:18,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:21:18,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 12:21:18,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:18,315 INFO L225 Difference]: With dead ends: 58078 [2020-10-16 12:21:18,315 INFO L226 Difference]: Without dead ends: 58061 [2020-10-16 12:21:18,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:21:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-16 12:21:20,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-16 12:21:20,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-16 12:21:20,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-16 12:21:20,425 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-16 12:21:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:20,425 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-16 12:21:20,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:21:20,425 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-16 12:21:20,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:21:20,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:20,426 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:20,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-16 12:21:20,426 INFO L429 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]=== [2020-10-16 12:21:20,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:20,426 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-10-16 12:21:20,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:20,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787262815] [2020-10-16 12:21:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:21:20,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787262815] [2020-10-16 12:21:20,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:20,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:21:20,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547677645] [2020-10-16 12:21:20,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:21:20,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:20,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:21:20,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:21:20,453 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-16 12:21:20,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:20,782 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-16 12:21:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:21:20,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 12:21:20,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:20,915 INFO L225 Difference]: With dead ends: 41885 [2020-10-16 12:21:20,916 INFO L226 Difference]: Without dead ends: 41856 [2020-10-16 12:21:20,916 INFO L677 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 [2020-10-16 12:21:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-16 12:21:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-16 12:21:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-16 12:21:22,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-16 12:21:22,310 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-16 12:21:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:22,311 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-16 12:21:22,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:21:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-16 12:21:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:21:22,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:22,311 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:22,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-16 12:21:22,312 INFO L429 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]=== [2020-10-16 12:21:22,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:22,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-10-16 12:21:22,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:22,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678047056] [2020-10-16 12:21:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:21:22,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678047056] [2020-10-16 12:21:22,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238818577] [2020-10-16 12:21:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:22,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:21:22,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:21:22,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:22,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:21:22,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762636955] [2020-10-16 12:21:22,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:21:22,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:22,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:21:22,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:21:22,526 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-10-16 12:21:23,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:23,211 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-16 12:21:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:21:23,211 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-16 12:21:23,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:24,016 INFO L225 Difference]: With dead ends: 66831 [2020-10-16 12:21:24,016 INFO L226 Difference]: Without dead ends: 66807 [2020-10-16 12:21:24,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:21:24,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-16 12:21:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-16 12:21:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-16 12:21:25,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-16 12:21:25,738 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-16 12:21:25,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:25,738 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-16 12:21:25,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:21:25,738 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-16 12:21:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:21:25,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:25,739 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:25,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-16 12:21:25,955 INFO L429 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]=== [2020-10-16 12:21:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:25,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-10-16 12:21:25,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:25,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802892604] [2020-10-16 12:21:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:25,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802892604] [2020-10-16 12:21:25,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236562041] [2020-10-16 12:21:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:26,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:21:26,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:26,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:26,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:26,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:21:26,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333870489] [2020-10-16 12:21:26,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:21:26,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:26,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:21:26,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:21:26,139 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-10-16 12:21:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:26,822 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-16 12:21:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:21:26,822 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-16 12:21:26,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:27,042 INFO L225 Difference]: With dead ends: 69484 [2020-10-16 12:21:27,042 INFO L226 Difference]: Without dead ends: 69451 [2020-10-16 12:21:27,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:21:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-16 12:21:29,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-16 12:21:29,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-16 12:21:29,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-16 12:21:29,411 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-16 12:21:29,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:29,411 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-16 12:21:29,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:21:29,411 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-16 12:21:29,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:21:29,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:29,412 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:29,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:21:29,613 INFO L429 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]=== [2020-10-16 12:21:29,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:29,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-10-16 12:21:29,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:29,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974172363] [2020-10-16 12:21:29,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:21:29,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974172363] [2020-10-16 12:21:29,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:29,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:21:29,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121438208] [2020-10-16 12:21:29,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:21:29,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:29,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:21:29,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:21:29,651 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-16 12:21:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:30,319 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-16 12:21:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:21:30,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 12:21:30,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:30,563 INFO L225 Difference]: With dead ends: 70510 [2020-10-16 12:21:30,563 INFO L226 Difference]: Without dead ends: 70477 [2020-10-16 12:21:30,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:21:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-16 12:21:32,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-16 12:21:32,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-16 12:21:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-16 12:21:33,040 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-16 12:21:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:33,040 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-16 12:21:33,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:21:33,040 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-16 12:21:33,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:21:33,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:33,041 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:33,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-16 12:21:33,041 INFO L429 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]=== [2020-10-16 12:21:33,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:33,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-10-16 12:21:33,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:33,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379754641] [2020-10-16 12:21:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:21:33,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379754641] [2020-10-16 12:21:33,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:33,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:21:33,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735354743] [2020-10-16 12:21:33,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:21:33,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:33,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:21:33,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:21:33,080 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-16 12:21:33,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:33,724 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-16 12:21:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:21:33,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 12:21:33,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:33,951 INFO L225 Difference]: With dead ends: 70096 [2020-10-16 12:21:33,951 INFO L226 Difference]: Without dead ends: 70063 [2020-10-16 12:21:33,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:21:34,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-16 12:21:35,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-16 12:21:35,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-16 12:21:35,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-16 12:21:35,774 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-16 12:21:35,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:35,774 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-16 12:21:35,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:21:35,774 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-16 12:21:35,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:21:35,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:35,775 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:35,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-16 12:21:35,775 INFO L429 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]=== [2020-10-16 12:21:35,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:35,776 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-10-16 12:21:35,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:35,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978305179] [2020-10-16 12:21:35,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:35,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978305179] [2020-10-16 12:21:35,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005186091] [2020-10-16 12:21:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:35,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:21:35,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:36,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:36,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:21:36,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808966383] [2020-10-16 12:21:36,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:21:36,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:36,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:21:36,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:21:36,028 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-10-16 12:21:37,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:37,844 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-16 12:21:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:21:37,844 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 12:21:37,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:38,149 INFO L225 Difference]: With dead ends: 100731 [2020-10-16 12:21:38,149 INFO L226 Difference]: Without dead ends: 100715 [2020-10-16 12:21:38,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:21:39,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-16 12:21:40,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-16 12:21:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-16 12:21:40,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-16 12:21:40,411 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-16 12:21:40,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:40,411 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-16 12:21:40,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:21:40,412 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-16 12:21:40,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:21:40,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:40,413 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:40,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-10-16 12:21:40,613 INFO L429 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]=== [2020-10-16 12:21:40,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:40,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-10-16 12:21:40,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:40,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223786495] [2020-10-16 12:21:40,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:21:40,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223786495] [2020-10-16 12:21:40,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789059389] [2020-10-16 12:21:40,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:40,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:21:40,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:21:40,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:21:40,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:21:40,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:40,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:21:40,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123300208] [2020-10-16 12:21:40,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:21:40,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:40,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:21:40,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:21:40,868 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-10-16 12:21:42,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:42,570 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-16 12:21:42,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:21:42,571 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 12:21:42,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:42,887 INFO L225 Difference]: With dead ends: 99876 [2020-10-16 12:21:42,887 INFO L226 Difference]: Without dead ends: 99855 [2020-10-16 12:21:42,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:21:43,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-16 12:21:45,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-16 12:21:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-16 12:21:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-16 12:21:45,259 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-16 12:21:45,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:45,259 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-16 12:21:45,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:21:45,259 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-16 12:21:45,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:21:45,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:45,260 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:45,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:21:45,461 INFO L429 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]=== [2020-10-16 12:21:45,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:45,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-10-16 12:21:45,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:45,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994102231] [2020-10-16 12:21:45,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:47,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994102231] [2020-10-16 12:21:47,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28296647] [2020-10-16 12:21:47,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:47,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:21:47,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:21:47,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:21:47,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:47,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:47,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:21:47,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861914149] [2020-10-16 12:21:47,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:21:47,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:47,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:21:47,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:21:47,454 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-10-16 12:21:48,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:48,976 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-16 12:21:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:21:48,977 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 12:21:48,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:49,292 INFO L225 Difference]: With dead ends: 100071 [2020-10-16 12:21:49,292 INFO L226 Difference]: Without dead ends: 100055 [2020-10-16 12:21:49,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:21:50,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-16 12:21:51,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-16 12:21:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-16 12:21:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-16 12:21:52,220 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-16 12:21:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:52,221 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-16 12:21:52,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:21:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-16 12:21:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:21:52,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:52,222 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:52,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-16 12:21:52,423 INFO L429 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]=== [2020-10-16 12:21:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:52,423 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-10-16 12:21:52,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:52,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500160493] [2020-10-16 12:21:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:52,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500160493] [2020-10-16 12:21:52,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112485409] [2020-10-16 12:21:52,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:52,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:21:52,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:21:52,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:21:52,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:52,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:52,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:21:52,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937205727] [2020-10-16 12:21:52,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:21:52,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:52,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:21:52,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:21:52,679 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-10-16 12:21:54,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:54,063 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-16 12:21:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:21:54,064 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 12:21:54,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:54,356 INFO L225 Difference]: With dead ends: 99523 [2020-10-16 12:21:54,356 INFO L226 Difference]: Without dead ends: 99502 [2020-10-16 12:21:54,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:21:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-16 12:21:57,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-16 12:21:57,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-16 12:21:57,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-16 12:21:57,260 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-16 12:21:57,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:57,260 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-16 12:21:57,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:21:57,261 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-16 12:21:57,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:21:57,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:57,262 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:57,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-16 12:21:57,462 INFO L429 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]=== [2020-10-16 12:21:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:57,463 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-10-16 12:21:57,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:57,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165613772] [2020-10-16 12:21:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:21:57,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165613772] [2020-10-16 12:21:57,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:57,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 12:21:57,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231461441] [2020-10-16 12:21:57,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:21:57,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:57,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:21:57,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:21:57,518 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-10-16 12:21:58,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:58,855 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-10-16 12:21:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:21:58,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 12:21:58,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:59,163 INFO L225 Difference]: With dead ends: 99710 [2020-10-16 12:21:59,163 INFO L226 Difference]: Without dead ends: 99694 [2020-10-16 12:21:59,163 INFO L677 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 [2020-10-16 12:22:00,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-10-16 12:22:03,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-10-16 12:22:03,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-10-16 12:22:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-10-16 12:22:04,113 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-10-16 12:22:04,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:04,113 INFO L481 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-10-16 12:22:04,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:22:04,113 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-10-16 12:22:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:22:04,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:04,114 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:04,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-16 12:22:04,115 INFO L429 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]=== [2020-10-16 12:22:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:04,115 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-10-16 12:22:04,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:04,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050128945] [2020-10-16 12:22:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:22:04,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050128945] [2020-10-16 12:22:04,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:04,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 12:22:04,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574668607] [2020-10-16 12:22:04,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:22:04,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:04,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:22:04,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:22:04,176 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-10-16 12:22:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:05,526 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-10-16 12:22:05,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:22:05,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 12:22:05,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:05,804 INFO L225 Difference]: With dead ends: 98863 [2020-10-16 12:22:05,804 INFO L226 Difference]: Without dead ends: 98841 [2020-10-16 12:22:05,804 INFO L677 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 [2020-10-16 12:22:06,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-10-16 12:22:08,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-10-16 12:22:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-10-16 12:22:08,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-10-16 12:22:08,565 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-10-16 12:22:08,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:08,566 INFO L481 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-10-16 12:22:08,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:22:08,566 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-10-16 12:22:08,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:22:08,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:08,567 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:08,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-16 12:22:08,567 INFO L429 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]=== [2020-10-16 12:22:08,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:08,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-10-16 12:22:08,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:08,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275017747] [2020-10-16 12:22:08,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:22:08,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275017747] [2020-10-16 12:22:08,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:08,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:22:08,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795483837] [2020-10-16 12:22:08,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:22:08,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:08,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:22:08,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:22:08,589 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-10-16 12:22:08,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:08,930 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-10-16 12:22:08,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:22:08,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 12:22:08,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:09,076 INFO L225 Difference]: With dead ends: 46463 [2020-10-16 12:22:09,076 INFO L226 Difference]: Without dead ends: 46417 [2020-10-16 12:22:09,076 INFO L677 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 [2020-10-16 12:22:09,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-10-16 12:22:10,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-10-16 12:22:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-16 12:22:10,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-16 12:22:10,517 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-16 12:22:10,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:10,517 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-16 12:22:10,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:22:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-16 12:22:10,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:22:10,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:10,519 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:10,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-16 12:22:10,519 INFO L429 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]=== [2020-10-16 12:22:10,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:10,519 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-10-16 12:22:10,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:10,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522182200] [2020-10-16 12:22:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 12:22:10,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522182200] [2020-10-16 12:22:10,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366498659] [2020-10-16 12:22:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:22:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:10,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:22:10,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:22:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 12:22:10,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:22:10,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:22:10,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560257005] [2020-10-16 12:22:10,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:22:10,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:10,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:22:10,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:22:10,697 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-10-16 12:22:12,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:12,114 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-16 12:22:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:22:12,114 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-16 12:22:12,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:12,348 INFO L225 Difference]: With dead ends: 75380 [2020-10-16 12:22:12,349 INFO L226 Difference]: Without dead ends: 75344 [2020-10-16 12:22:12,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:22:13,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-16 12:22:14,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-16 12:22:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-16 12:22:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-16 12:22:14,184 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-16 12:22:14,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:14,185 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-16 12:22:14,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:22:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-16 12:22:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:22:14,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:14,186 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:14,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:22:14,387 INFO L429 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]=== [2020-10-16 12:22:14,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:14,388 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-10-16 12:22:14,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:14,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389859905] [2020-10-16 12:22:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:22:14,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389859905] [2020-10-16 12:22:14,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244895653] [2020-10-16 12:22:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:22:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:14,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:22:14,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:22:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:22:14,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:22:14,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:22:14,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735493360] [2020-10-16 12:22:14,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:22:14,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:14,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:22:14,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:22:14,582 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-10-16 12:22:15,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:15,367 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-16 12:22:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:22:15,368 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-16 12:22:15,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:16,204 INFO L225 Difference]: With dead ends: 79487 [2020-10-16 12:22:16,204 INFO L226 Difference]: Without dead ends: 79445 [2020-10-16 12:22:16,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:22:17,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-16 12:22:17,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-16 12:22:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-16 12:22:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-16 12:22:18,093 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-16 12:22:18,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:18,093 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-16 12:22:18,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:22:18,093 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-16 12:22:18,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:22:18,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:18,095 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:18,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:22:18,296 INFO L429 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]=== [2020-10-16 12:22:18,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:18,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-10-16 12:22:18,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:18,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645243922] [2020-10-16 12:22:18,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:22:18,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645243922] [2020-10-16 12:22:18,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799483540] [2020-10-16 12:22:18,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:22:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:18,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:22:18,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:22:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 12:22:18,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:22:18,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:22:18,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347292677] [2020-10-16 12:22:18,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:22:18,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:18,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:22:18,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:22:18,480 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-10-16 12:22:19,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:19,206 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-16 12:22:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:22:19,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-16 12:22:19,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:19,484 INFO L225 Difference]: With dead ends: 82728 [2020-10-16 12:22:19,484 INFO L226 Difference]: Without dead ends: 82673 [2020-10-16 12:22:19,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:22:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-16 12:22:21,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-16 12:22:21,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-16 12:22:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-16 12:22:22,003 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-16 12:22:22,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:22,004 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-16 12:22:22,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:22:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-16 12:22:22,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:22:22,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:22,007 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:22,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:22:22,207 INFO L429 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]=== [2020-10-16 12:22:22,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:22,208 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-10-16 12:22:22,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:22,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703488538] [2020-10-16 12:22:22,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:22:22,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703488538] [2020-10-16 12:22:22,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:22,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:22:22,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326682279] [2020-10-16 12:22:22,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:22:22,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:22,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:22:22,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:22:22,249 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-16 12:22:22,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:22,924 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-10-16 12:22:22,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:22:22,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 12:22:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:23,184 INFO L225 Difference]: With dead ends: 83507 [2020-10-16 12:22:23,185 INFO L226 Difference]: Without dead ends: 83452 [2020-10-16 12:22:23,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:22:24,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-10-16 12:22:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-10-16 12:22:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-16 12:22:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-16 12:22:25,783 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-16 12:22:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:25,784 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-16 12:22:25,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:22:25,784 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-16 12:22:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:22:25,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:25,786 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:25,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-16 12:22:25,786 INFO L429 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]=== [2020-10-16 12:22:25,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:25,786 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-10-16 12:22:25,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:25,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033595295] [2020-10-16 12:22:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:22:25,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033595295] [2020-10-16 12:22:25,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:25,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:22:25,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312309194] [2020-10-16 12:22:25,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:22:25,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:25,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:22:25,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:22:25,824 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-16 12:22:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:26,555 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-10-16 12:22:26,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:22:26,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 12:22:26,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:26,798 INFO L225 Difference]: With dead ends: 83523 [2020-10-16 12:22:26,799 INFO L226 Difference]: Without dead ends: 83468 [2020-10-16 12:22:26,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:22:28,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-10-16 12:22:29,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-10-16 12:22:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-16 12:22:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-16 12:22:29,290 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-16 12:22:29,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:29,290 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-16 12:22:29,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:22:29,290 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-16 12:22:29,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:22:29,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:29,292 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:29,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-16 12:22:29,292 INFO L429 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]=== [2020-10-16 12:22:29,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:29,293 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-10-16 12:22:29,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:29,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064438991] [2020-10-16 12:22:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 12:22:29,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064438991] [2020-10-16 12:22:29,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:29,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:22:29,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145666581] [2020-10-16 12:22:29,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:22:29,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:29,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:22:29,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:22:29,328 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-16 12:22:30,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:30,014 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-10-16 12:22:30,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:22:30,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 12:22:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:30,256 INFO L225 Difference]: With dead ends: 83918 [2020-10-16 12:22:30,256 INFO L226 Difference]: Without dead ends: 83863 [2020-10-16 12:22:30,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:22:31,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-10-16 12:22:32,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-10-16 12:22:32,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-16 12:22:32,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-16 12:22:32,693 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-16 12:22:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:32,693 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-16 12:22:32,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:22:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-16 12:22:32,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:32,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:32,696 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:32,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-16 12:22:32,696 INFO L429 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]=== [2020-10-16 12:22:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:32,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-10-16 12:22:32,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:32,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319441353] [2020-10-16 12:22:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:22:32,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319441353] [2020-10-16 12:22:32,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398177879] [2020-10-16 12:22:32,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:22:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:32,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:22:32,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:22:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:22:32,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:22:32,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:22:32,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133143247] [2020-10-16 12:22:32,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:22:32,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:32,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:22:32,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:22:32,945 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-10-16 12:22:34,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:34,578 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-16 12:22:34,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:22:34,578 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:22:34,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:35,597 INFO L225 Difference]: With dead ends: 122892 [2020-10-16 12:22:35,597 INFO L226 Difference]: Without dead ends: 122862 [2020-10-16 12:22:35,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:22:36,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-16 12:22:38,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-16 12:22:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-16 12:22:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-16 12:22:38,168 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-16 12:22:38,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:38,168 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-16 12:22:38,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:22:38,168 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-16 12:22:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:38,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:38,171 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:38,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-16 12:22:38,372 INFO L429 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]=== [2020-10-16 12:22:38,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:38,373 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-10-16 12:22:38,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:38,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212241242] [2020-10-16 12:22:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:22:38,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212241242] [2020-10-16 12:22:38,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755508134] [2020-10-16 12:22:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:22:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:40,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:22:40,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:22:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 12:22:40,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:22:40,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:22:40,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560816279] [2020-10-16 12:22:40,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:22:40,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:40,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:22:40,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:22:40,749 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-10-16 12:22:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:42,375 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-16 12:22:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:22:42,376 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:22:42,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:42,708 INFO L225 Difference]: With dead ends: 121590 [2020-10-16 12:22:42,708 INFO L226 Difference]: Without dead ends: 121560 [2020-10-16 12:22:42,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:22:43,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-16 12:22:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-16 12:22:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-16 12:22:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-16 12:22:45,752 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-16 12:22:45,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:45,752 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-16 12:22:45,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:22:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-16 12:22:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:45,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:45,755 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:45,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:22:45,961 INFO L429 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]=== [2020-10-16 12:22:45,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:45,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-10-16 12:22:45,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:45,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126845196] [2020-10-16 12:22:45,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 12:22:46,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126845196] [2020-10-16 12:22:46,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635580459] [2020-10-16 12:22:46,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:22:46,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:22:46,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:22:46,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:22:46,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:22:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 12:22:46,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:22:46,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:22:46,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887408604] [2020-10-16 12:22:46,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:22:46,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:46,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:22:46,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:22:46,208 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-10-16 12:22:47,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:47,728 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-16 12:22:47,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:22:47,729 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:22:47,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:48,054 INFO L225 Difference]: With dead ends: 120395 [2020-10-16 12:22:48,055 INFO L226 Difference]: Without dead ends: 120362 [2020-10-16 12:22:48,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:22:49,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-16 12:22:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-16 12:22:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-16 12:22:51,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-16 12:22:51,200 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-16 12:22:51,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:51,200 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-16 12:22:51,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:22:51,200 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-16 12:22:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:51,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:51,203 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:51,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-16 12:22:51,404 INFO L429 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]=== [2020-10-16 12:22:51,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:51,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-10-16 12:22:51,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:51,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22423223] [2020-10-16 12:22:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 12:22:51,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22423223] [2020-10-16 12:22:51,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061612439] [2020-10-16 12:22:51,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:22:51,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:22:51,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:22:51,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:22:51,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:22:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 12:22:51,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:22:51,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:22:51,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299735765] [2020-10-16 12:22:51,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:22:51,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:51,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:22:51,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:22:51,645 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-10-16 12:22:53,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:53,450 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-10-16 12:22:53,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:22:53,450 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:22:53,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:53,798 INFO L225 Difference]: With dead ends: 119346 [2020-10-16 12:22:53,798 INFO L226 Difference]: Without dead ends: 119313 [2020-10-16 12:22:53,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:22:54,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-10-16 12:22:56,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-10-16 12:22:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-16 12:22:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-16 12:22:56,921 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-16 12:22:56,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:56,921 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-16 12:22:56,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:22:56,921 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-16 12:22:56,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:56,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:56,924 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:22:57,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-16 12:22:57,124 INFO L429 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]=== [2020-10-16 12:22:57,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:57,125 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-10-16 12:22:57,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:57,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240261337] [2020-10-16 12:22:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:22:57,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240261337] [2020-10-16 12:22:57,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828391575] [2020-10-16 12:22:57,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:22:57,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:22:57,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:22:57,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:22:57,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:22:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:22:57,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:22:57,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:22:57,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047770416] [2020-10-16 12:22:57,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:22:57,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:57,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:22:57,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:22:57,377 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-10-16 12:22:59,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:59,026 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-10-16 12:22:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:22:59,026 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:22:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:59,359 INFO L225 Difference]: With dead ends: 119770 [2020-10-16 12:22:59,359 INFO L226 Difference]: Without dead ends: 119740 [2020-10-16 12:22:59,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:23:03,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-10-16 12:23:04,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-10-16 12:23:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-10-16 12:23:04,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-10-16 12:23:04,957 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-10-16 12:23:04,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:23:04,957 INFO L481 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-10-16 12:23:04,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:23:04,958 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-10-16 12:23:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:23:04,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:23:04,960 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:23:05,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-16 12:23:05,161 INFO L429 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]=== [2020-10-16 12:23:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:23:05,161 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-10-16 12:23:05,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:23:05,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113945759] [2020-10-16 12:23:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:23:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:23:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:23:05,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113945759] [2020-10-16 12:23:05,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046540173] [2020-10-16 12:23:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:23:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:23:05,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:23:05,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:23:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:23:05,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:23:05,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:23:05,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272481708] [2020-10-16 12:23:05,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:23:05,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:23:05,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:23:05,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:23:05,404 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-10-16 12:23:07,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:23:07,519 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-10-16 12:23:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:23:07,520 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:23:07,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:23:07,903 INFO L225 Difference]: With dead ends: 121131 [2020-10-16 12:23:07,904 INFO L226 Difference]: Without dead ends: 121101 [2020-10-16 12:23:07,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:23:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-10-16 12:23:13,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-10-16 12:23:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-10-16 12:23:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-10-16 12:23:13,835 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-10-16 12:23:13,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:23:13,835 INFO L481 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-10-16 12:23:13,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:23:13,835 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-10-16 12:23:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:23:13,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:23:13,837 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:23:14,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-16 12:23:14,038 INFO L429 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]=== [2020-10-16 12:23:14,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:23:14,039 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-10-16 12:23:14,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:23:14,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709642587] [2020-10-16 12:23:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:23:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:23:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:23:14,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709642587] [2020-10-16 12:23:14,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704775639] [2020-10-16 12:23:14,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:23:14,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:23:14,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:23:14,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:23:14,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:23:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:23:14,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:23:14,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:23:14,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496926450] [2020-10-16 12:23:14,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:23:14,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:23:14,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:23:14,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:23:14,288 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-10-16 12:23:15,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:23:15,830 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-10-16 12:23:15,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:23:15,830 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:23:15,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:23:16,180 INFO L225 Difference]: With dead ends: 120194 [2020-10-16 12:23:16,181 INFO L226 Difference]: Without dead ends: 120154 [2020-10-16 12:23:16,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:23:17,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-10-16 12:23:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-10-16 12:23:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-10-16 12:23:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-10-16 12:23:19,220 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-10-16 12:23:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:23:19,220 INFO L481 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-10-16 12:23:19,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:23:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-10-16 12:23:19,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:23:19,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:23:19,223 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:23:19,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:23:19,424 INFO L429 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]=== [2020-10-16 12:23:19,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:23:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-10-16 12:23:19,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:23:19,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479117817] [2020-10-16 12:23:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:23:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:23:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:23:19,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479117817] [2020-10-16 12:23:19,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835739696] [2020-10-16 12:23:19,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:23:19,561 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:23:19,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:23:19,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:23:19,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:23:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:23:19,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:23:19,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:23:19,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657363914] [2020-10-16 12:23:19,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:23:19,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:23:19,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:23:19,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:23:19,672 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-10-16 12:23:21,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:23:21,086 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-10-16 12:23:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:23:21,087 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:23:21,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:23:21,418 INFO L225 Difference]: With dead ends: 118559 [2020-10-16 12:23:21,418 INFO L226 Difference]: Without dead ends: 118526 [2020-10-16 12:23:21,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 Received shutdown request... [2020-10-16 12:23:23,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-10-16 12:23:23,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-16 12:23:23,564 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 12:23:23,568 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 12:23:23,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:23:23 BasicIcfg [2020-10-16 12:23:23,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:23:23,570 INFO L168 Benchmark]: Toolchain (without parser) took 232221.06 ms. Allocated memory was 140.0 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 101.8 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-10-16 12:23:23,570 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-16 12:23:23,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 776.82 ms. Allocated memory was 140.0 MB in the beginning and 205.5 MB in the end (delta: 65.5 MB). Free memory was 101.8 MB in the beginning and 164.8 MB in the end (delta: -63.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:23:23,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.11 ms. Allocated memory is still 205.5 MB. Free memory was 164.8 MB in the beginning and 162.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:23:23,571 INFO L168 Benchmark]: Boogie Preprocessor took 27.90 ms. Allocated memory is still 205.5 MB. Free memory was 162.9 MB in the beginning and 161.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:23:23,571 INFO L168 Benchmark]: RCFGBuilder took 416.80 ms. Allocated memory is still 205.5 MB. Free memory was 161.0 MB in the beginning and 140.6 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:23:23,572 INFO L168 Benchmark]: TraceAbstraction took 230946.09 ms. Allocated memory was 205.5 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 140.6 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-10-16 12:23:23,573 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 776.82 ms. Allocated memory was 140.0 MB in the beginning and 205.5 MB in the end (delta: 65.5 MB). Free memory was 101.8 MB in the beginning and 164.8 MB in the end (delta: -63.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.11 ms. Allocated memory is still 205.5 MB. Free memory was 164.8 MB in the beginning and 162.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.90 ms. Allocated memory is still 205.5 MB. Free memory was 162.9 MB in the beginning and 161.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.80 ms. Allocated memory is still 205.5 MB. Free memory was 161.0 MB in the beginning and 140.6 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230946.09 ms. Allocated memory was 205.5 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 140.6 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 313 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 61 PlacesBefore, 18 PlacesAfterwards, 58 TransitionsBefore, 12 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 576 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 497 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 28 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 80 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 21 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 3 ConcurrentYvCompositions, 4 ChoiceCompositions, 66 TotalNumberOfCompositions, 1122 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 687 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 46 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 99 PlacesBefore, 41 PlacesAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 5 FixpointIterations, 39 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 3 ConcurrentYvCompositions, 5 ChoiceCompositions, 79 TotalNumberOfCompositions, 1841 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 861 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 118 PlacesBefore, 51 PlacesAfterwards, 106 TransitionsBefore, 33 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 92 TotalNumberOfCompositions, 2590 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1101 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 70 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 137 PlacesBefore, 61 PlacesAfterwards, 122 TransitionsBefore, 39 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 6 FixpointIterations, 61 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 3 ConcurrentYvCompositions, 7 ChoiceCompositions, 111 TotalNumberOfCompositions, 4038 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1473 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 102 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 156 PlacesBefore, 71 PlacesAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 5 FixpointIterations, 66 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 121 TotalNumberOfCompositions, 4694 MoverChecksTotal - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 230.5s, OverallIterations: 106, TraceHistogramMax: 6, AutomataDifference: 86.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.2s, HoareTripleCheckerStatistics: 4776 SDtfs, 25152 SDslu, 17597 SDs, 0 SdLazy, 32955 SolverSat, 2233 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2850 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 2138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14869 ImplicationChecksByTransitivity, 25.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37062occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 101.3s AutomataMinimizationTime, 101 MinimizatonAttempts, 2256009 StatesRemovedByMinimization, 93 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 3095 NumberOfCodeBlocks, 3067 NumberOfCodeBlocksAsserted, 181 NumberOfCheckSat, 2858 ConstructedInterpolants, 0 QuantifiedInterpolants, 372692 SizeOfPredicates, 256 NumberOfNonLiveVariables, 5413 ConjunctsInSsa, 400 ConjunctsInUnsatCore, 149 InterpolantComputations, 53 PerfectInterpolantSequences, 912/1688 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown