/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:05:45,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:05:45,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:05:45,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:05:45,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:05:45,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:05:45,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:05:45,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:05:45,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:05:45,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:05:45,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:05:45,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:05:45,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:05:45,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:05:45,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:05:45,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:05:45,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:05:45,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:05:45,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:05:45,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:05:45,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:05:45,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:05:45,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:05:45,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:05:45,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 22:05:45,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 22:05:45,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 22:05:45,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 22:05:45,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 22:05:45,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 22:05:45,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 22:05:45,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 22:05:45,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 22:05:45,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 22:05:45,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 22:05:45,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 22:05:45,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 22:05:45,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 22:05:45,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:05:45,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:05:45,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:05:45,511 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 22:05:45,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:05:45,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:05:45,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:05:45,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:05:45,569 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:05:45,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:05:45,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:05:45,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:05:45,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:05:45,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:05:45,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:05:45,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:05:45,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:05:45,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:05:45,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:05:45,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:05:45,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:05:45,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:05:45,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:05:45,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:05:45,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:05:45,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:05:45,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:05:45,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 22:05:45,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:05:45,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:05:45,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:05:45,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:05:45,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 22:05:45,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 22:05:45,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:05:45,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:05:45,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:05:45,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:05:45,923 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:05:45,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2020-10-21 22:05:45,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b18b99045/544850d631be47b5a0ac6b19684e1c86/FLAG086eba7d9 [2020-10-21 22:05:46,496 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:05:46,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2020-10-21 22:05:46,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b18b99045/544850d631be47b5a0ac6b19684e1c86/FLAG086eba7d9 [2020-10-21 22:05:46,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b18b99045/544850d631be47b5a0ac6b19684e1c86 [2020-10-21 22:05:46,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:05:46,869 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:05:46,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:05:46,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:05:46,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:05:46,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:05:46" (1/1) ... [2020-10-21 22:05:46,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@564f9e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:46, skipping insertion in model container [2020-10-21 22:05:46,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:05:46" (1/1) ... [2020-10-21 22:05:46,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:05:46,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:05:47,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:05:47,433 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:05:47,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:05:47,583 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:05:47,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:47 WrapperNode [2020-10-21 22:05:47,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:05:47,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:05:47,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:05:47,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:05:47,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:47" (1/1) ... [2020-10-21 22:05:47,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:47" (1/1) ... [2020-10-21 22:05:47,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:05:47,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:05:47,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:05:47,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:05:47,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:47" (1/1) ... [2020-10-21 22:05:47,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:47" (1/1) ... [2020-10-21 22:05:47,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:47" (1/1) ... [2020-10-21 22:05:47,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:47" (1/1) ... [2020-10-21 22:05:47,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:47" (1/1) ... [2020-10-21 22:05:47,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:47" (1/1) ... [2020-10-21 22:05:47,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:47" (1/1) ... [2020-10-21 22:05:47,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:05:47,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:05:47,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:05:47,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:05:47,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:05:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-21 22:05:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-21 22:05:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-21 22:05:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-21 22:05:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:05:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:05:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:05:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:05:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:05:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:05:47,762 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 22:05:48,106 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:05:48,106 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-21 22:05:48,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:05:48 BoogieIcfgContainer [2020-10-21 22:05:48,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:05:48,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:05:48,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:05:48,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:05:48,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:05:46" (1/3) ... [2020-10-21 22:05:48,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e50f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:05:48, skipping insertion in model container [2020-10-21 22:05:48,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:05:47" (2/3) ... [2020-10-21 22:05:48,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e50f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:05:48, skipping insertion in model container [2020-10-21 22:05:48,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:05:48" (3/3) ... [2020-10-21 22:05:48,118 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013-1.i [2020-10-21 22:05:48,129 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:05:48,130 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:05:48,136 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 22:05:48,137 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:05:48,165 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,166 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,166 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,166 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,167 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,167 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,168 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,168 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,168 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,172 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,174 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,174 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,195 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,195 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,195 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:48,198 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:05:48,212 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 22:05:48,230 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:05:48,230 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:05:48,230 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:05:48,230 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:05:48,231 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:05:48,231 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:05:48,231 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:05:48,231 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:05:48,244 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:05:48,246 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 60 transitions, 130 flow [2020-10-21 22:05:48,248 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 60 transitions, 130 flow [2020-10-21 22:05:48,251 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 60 transitions, 130 flow [2020-10-21 22:05:48,298 INFO L129 PetriNetUnfolder]: 4/70 cut-off events. [2020-10-21 22:05:48,298 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 22:05:48,304 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 4/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2020-10-21 22:05:48,307 INFO L116 LiptonReduction]: Number of co-enabled transitions 942 [2020-10-21 22:05:49,546 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-21 22:05:49,983 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-21 22:05:50,101 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 22:05:50,111 INFO L131 LiptonReduction]: Checked pairs total: 871 [2020-10-21 22:05:50,112 INFO L133 LiptonReduction]: Total number of compositions: 60 [2020-10-21 22:05:50,119 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-21 22:05:50,131 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-21 22:05:50,134 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-21 22:05:50,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 22:05:50,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:50,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 22:05:50,142 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:05:50,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:50,149 INFO L82 PathProgramCache]: Analyzing trace with hash 245395, now seen corresponding path program 1 times [2020-10-21 22:05:50,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:50,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976833727] [2020-10-21 22:05:50,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:05:50,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976833727] [2020-10-21 22:05:50,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:50,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:05:50,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692118554] [2020-10-21 22:05:50,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:05:50,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:50,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:05:50,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:05:50,382 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-21 22:05:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:50,414 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-21 22:05:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:05:50,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 22:05:50,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:50,427 INFO L225 Difference]: With dead ends: 35 [2020-10-21 22:05:50,427 INFO L226 Difference]: Without dead ends: 31 [2020-10-21 22:05:50,429 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 [2020-10-21 22:05:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-21 22:05:50,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-21 22:05:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-21 22:05:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-21 22:05:50,468 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-21 22:05:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:50,468 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-21 22:05:50,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:05:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-21 22:05:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-21 22:05:50,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:50,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:50,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:05:50,470 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:05:50,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:50,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1037099168, now seen corresponding path program 1 times [2020-10-21 22:05:50,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:50,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339625808] [2020-10-21 22:05:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:50,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:05:50,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339625808] [2020-10-21 22:05:50,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:50,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:05:50,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141859808] [2020-10-21 22:05:50,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:05:50,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:50,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:05:50,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:05:50,577 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-21 22:05:50,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:50,593 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-21 22:05:50,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 22:05:50,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-21 22:05:50,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:50,594 INFO L225 Difference]: With dead ends: 26 [2020-10-21 22:05:50,594 INFO L226 Difference]: Without dead ends: 24 [2020-10-21 22:05:50,595 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 [2020-10-21 22:05:50,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-21 22:05:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-21 22:05:50,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-21 22:05:50,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-21 22:05:50,600 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-21 22:05:50,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:50,601 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-21 22:05:50,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:05:50,601 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-21 22:05:50,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 22:05:50,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:50,602 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:50,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 22:05:50,602 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:05:50,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:50,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2085304898, now seen corresponding path program 1 times [2020-10-21 22:05:50,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:50,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081269019] [2020-10-21 22:05:50,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:05:50,633 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:05:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:05:50,654 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:05:50,685 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:05:50,685 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:05:50,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 22:05:50,687 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:05:50,687 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-21 22:05:50,698 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,698 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,702 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,702 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,702 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,745 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,745 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,748 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,748 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,748 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:50,749 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:05:50,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-21 22:05:50,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:05:50,750 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:05:50,750 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:05:50,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:05:50,751 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:05:50,751 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:05:50,751 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:05:50,751 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:05:50,753 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:05:50,754 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 83 transitions, 190 flow [2020-10-21 22:05:50,754 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 83 transitions, 190 flow [2020-10-21 22:05:50,754 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 83 transitions, 190 flow [2020-10-21 22:05:50,776 INFO L129 PetriNetUnfolder]: 5/92 cut-off events. [2020-10-21 22:05:50,776 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-21 22:05:50,778 INFO L80 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 92 events. 5/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 169 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 101. Up to 6 conditions per place. [2020-10-21 22:05:50,782 INFO L116 LiptonReduction]: Number of co-enabled transitions 1428 [2020-10-21 22:05:52,357 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2020-10-21 22:05:52,484 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 22:05:52,501 INFO L131 LiptonReduction]: Checked pairs total: 1665 [2020-10-21 22:05:52,501 INFO L133 LiptonReduction]: Total number of compositions: 83 [2020-10-21 22:05:52,501 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-21 22:05:52,529 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-21 22:05:52,530 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-21 22:05:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 22:05:52,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:52,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 22:05:52,531 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:05:52,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:52,531 INFO L82 PathProgramCache]: Analyzing trace with hash 432278, now seen corresponding path program 1 times [2020-10-21 22:05:52,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:52,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763019886] [2020-10-21 22:05:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:05:52,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763019886] [2020-10-21 22:05:52,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:52,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:05:52,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408150718] [2020-10-21 22:05:52,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:05:52,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:52,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:05:52,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:05:52,586 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-21 22:05:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:52,655 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-21 22:05:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:05:52,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 22:05:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:52,660 INFO L225 Difference]: With dead ends: 185 [2020-10-21 22:05:52,661 INFO L226 Difference]: Without dead ends: 171 [2020-10-21 22:05:52,661 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 [2020-10-21 22:05:52,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-21 22:05:52,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-21 22:05:52,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-21 22:05:52,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-21 22:05:52,693 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-21 22:05:52,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:52,693 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-21 22:05:52,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:05:52,694 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-21 22:05:52,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:05:52,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:52,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:52,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 22:05:52,695 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:05:52,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:52,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1541056090, now seen corresponding path program 1 times [2020-10-21 22:05:52,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:52,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191983995] [2020-10-21 22:05:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:05:52,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191983995] [2020-10-21 22:05:52,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:52,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:05:52,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410574262] [2020-10-21 22:05:52,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:05:52,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:52,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:05:52,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:05:52,747 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-21 22:05:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:52,796 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-21 22:05:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:05:52,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 22:05:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:52,799 INFO L225 Difference]: With dead ends: 205 [2020-10-21 22:05:52,800 INFO L226 Difference]: Without dead ends: 201 [2020-10-21 22:05:52,800 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 [2020-10-21 22:05:52,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-21 22:05:52,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-21 22:05:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-21 22:05:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-21 22:05:52,833 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-21 22:05:52,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:52,833 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-21 22:05:52,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:05:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-21 22:05:52,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:05:52,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:52,834 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:52,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 22:05:52,834 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:05:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:52,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1863628944, now seen corresponding path program 1 times [2020-10-21 22:05:52,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:52,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452906623] [2020-10-21 22:05:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:05:52,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452906623] [2020-10-21 22:05:52,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:52,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:05:52,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834463143] [2020-10-21 22:05:52,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:05:52,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:52,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:05:52,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:05:52,949 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-21 22:05:53,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:53,009 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-21 22:05:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:05:53,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 22:05:53,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:53,013 INFO L225 Difference]: With dead ends: 189 [2020-10-21 22:05:53,013 INFO L226 Difference]: Without dead ends: 185 [2020-10-21 22:05:53,013 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 [2020-10-21 22:05:53,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-21 22:05:53,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-21 22:05:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-21 22:05:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-21 22:05:53,027 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-21 22:05:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:53,028 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-21 22:05:53,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:05:53,028 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-21 22:05:53,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 22:05:53,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:53,030 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:53,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 22:05:53,030 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:05:53,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:53,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1934445161, now seen corresponding path program 1 times [2020-10-21 22:05:53,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:53,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899075365] [2020-10-21 22:05:53,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:05:53,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:05:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:05:53,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:05:53,074 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:05:53,075 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:05:53,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 22:05:53,075 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:05:53,077 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-21 22:05:53,087 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,087 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,087 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,087 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,088 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,088 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,088 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,088 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,088 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,089 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,089 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,090 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,090 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,090 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,090 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,091 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,091 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,104 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,104 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,104 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,104 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,104 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,107 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,107 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,107 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,108 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,108 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,109 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,109 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,109 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,109 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,109 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:53,110 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:05:53,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-21 22:05:53,110 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:05:53,110 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:05:53,111 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:05:53,111 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:05:53,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:05:53,111 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:05:53,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:05:53,111 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:05:53,114 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:05:53,114 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 106 transitions, 254 flow [2020-10-21 22:05:53,114 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 106 transitions, 254 flow [2020-10-21 22:05:53,115 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 113 places, 106 transitions, 254 flow [2020-10-21 22:05:53,141 INFO L129 PetriNetUnfolder]: 6/114 cut-off events. [2020-10-21 22:05:53,141 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-21 22:05:53,143 INFO L80 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 114 events. 6/114 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 198 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2020-10-21 22:05:53,147 INFO L116 LiptonReduction]: Number of co-enabled transitions 1998 [2020-10-21 22:05:54,986 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2020-10-21 22:05:55,097 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 22:05:55,158 INFO L131 LiptonReduction]: Checked pairs total: 2809 [2020-10-21 22:05:55,158 INFO L133 LiptonReduction]: Total number of compositions: 111 [2020-10-21 22:05:55,158 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-21 22:05:55,182 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-21 22:05:55,183 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-21 22:05:55,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 22:05:55,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:55,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 22:05:55,183 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:05:55,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:55,184 INFO L82 PathProgramCache]: Analyzing trace with hash 667761, now seen corresponding path program 1 times [2020-10-21 22:05:55,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:55,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907714706] [2020-10-21 22:05:55,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:05:55,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907714706] [2020-10-21 22:05:55,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:55,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:05:55,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796473278] [2020-10-21 22:05:55,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:05:55,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:55,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:05:55,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:05:55,216 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-21 22:05:55,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:55,241 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-21 22:05:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:05:55,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 22:05:55,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:55,248 INFO L225 Difference]: With dead ends: 600 [2020-10-21 22:05:55,248 INFO L226 Difference]: Without dead ends: 559 [2020-10-21 22:05:55,249 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 [2020-10-21 22:05:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-21 22:05:55,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-21 22:05:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-21 22:05:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-21 22:05:55,315 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-21 22:05:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:55,316 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-21 22:05:55,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:05:55,316 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-21 22:05:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:05:55,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:55,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:55,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 22:05:55,317 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:05:55,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:55,318 INFO L82 PathProgramCache]: Analyzing trace with hash 264166637, now seen corresponding path program 1 times [2020-10-21 22:05:55,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:55,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366913701] [2020-10-21 22:05:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:05:55,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366913701] [2020-10-21 22:05:55,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:55,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:05:55,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841010982] [2020-10-21 22:05:55,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:05:55,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:55,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:05:55,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:05:55,406 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-21 22:05:55,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:55,488 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-21 22:05:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:05:55,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 22:05:55,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:55,496 INFO L225 Difference]: With dead ends: 817 [2020-10-21 22:05:55,496 INFO L226 Difference]: Without dead ends: 812 [2020-10-21 22:05:55,497 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 [2020-10-21 22:05:55,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-21 22:05:55,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-21 22:05:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-21 22:05:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-21 22:05:55,528 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-21 22:05:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:55,528 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-21 22:05:55,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:05:55,528 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-21 22:05:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:05:55,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:55,530 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:55,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 22:05:55,530 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:05:55,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:55,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1293864876, now seen corresponding path program 1 times [2020-10-21 22:05:55,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:55,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405349397] [2020-10-21 22:05:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:05:55,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405349397] [2020-10-21 22:05:55,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:55,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:05:55,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364652213] [2020-10-21 22:05:55,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:05:55,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:55,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:05:55,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:05:55,574 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-21 22:05:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:55,641 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-21 22:05:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:05:55,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 22:05:55,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:55,649 INFO L225 Difference]: With dead ends: 843 [2020-10-21 22:05:55,649 INFO L226 Difference]: Without dead ends: 836 [2020-10-21 22:05:55,650 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 [2020-10-21 22:05:55,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-21 22:05:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-21 22:05:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-21 22:05:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-21 22:05:55,683 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-21 22:05:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:55,683 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-21 22:05:55,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:05:55,683 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-21 22:05:55,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:05:55,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:55,685 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:55,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-21 22:05:55,685 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:05:55,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:55,685 INFO L82 PathProgramCache]: Analyzing trace with hash 576563147, now seen corresponding path program 1 times [2020-10-21 22:05:55,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:55,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082390879] [2020-10-21 22:05:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:05:55,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082390879] [2020-10-21 22:05:55,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577307732] [2020-10-21 22:05:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:05:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:55,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:05:55,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:05:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:05:55,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:05:55,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 22:05:55,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216313214] [2020-10-21 22:05:55,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:05:55,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:55,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:05:55,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:05:55,862 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 9 states. [2020-10-21 22:05:56,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:56,060 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-21 22:05:56,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:05:56,061 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-21 22:05:56,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:56,069 INFO L225 Difference]: With dead ends: 1059 [2020-10-21 22:05:56,070 INFO L226 Difference]: Without dead ends: 1052 [2020-10-21 22:05:56,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 22:05:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-21 22:05:56,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-21 22:05:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-21 22:05:56,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-21 22:05:56,104 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-21 22:05:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:56,105 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-21 22:05:56,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:05:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-21 22:05:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:05:56,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:56,109 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:56,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-21 22:05:56,324 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:05:56,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:56,325 INFO L82 PathProgramCache]: Analyzing trace with hash -2136392117, now seen corresponding path program 2 times [2020-10-21 22:05:56,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:56,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801335509] [2020-10-21 22:05:56,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:05:56,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801335509] [2020-10-21 22:05:56,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:56,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:05:56,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139334054] [2020-10-21 22:05:56,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:05:56,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:56,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:05:56,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:05:56,373 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-21 22:05:56,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:56,534 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-21 22:05:56,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:05:56,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 22:05:56,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:56,543 INFO L225 Difference]: With dead ends: 1053 [2020-10-21 22:05:56,543 INFO L226 Difference]: Without dead ends: 1045 [2020-10-21 22:05:56,544 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 [2020-10-21 22:05:56,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-21 22:05:56,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-21 22:05:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-21 22:05:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-21 22:05:56,575 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-21 22:05:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:56,575 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-21 22:05:56,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:05:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-21 22:05:56,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:05:56,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:56,576 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:56,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-21 22:05:56,577 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:05:56,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:56,577 INFO L82 PathProgramCache]: Analyzing trace with hash 304408619, now seen corresponding path program 1 times [2020-10-21 22:05:56,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:56,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992871008] [2020-10-21 22:05:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:05:56,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992871008] [2020-10-21 22:05:56,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:56,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:05:56,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476705342] [2020-10-21 22:05:56,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:05:56,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:56,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:05:56,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:05:56,615 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-21 22:05:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:56,674 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-21 22:05:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:05:56,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 22:05:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:56,680 INFO L225 Difference]: With dead ends: 736 [2020-10-21 22:05:56,680 INFO L226 Difference]: Without dead ends: 728 [2020-10-21 22:05:56,680 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 [2020-10-21 22:05:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-21 22:05:56,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-21 22:05:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-21 22:05:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-21 22:05:56,700 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-21 22:05:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:56,701 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-21 22:05:56,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:05:56,701 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-21 22:05:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 22:05:56,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:56,702 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:56,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-21 22:05:56,702 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:05:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash 842141785, now seen corresponding path program 1 times [2020-10-21 22:05:56,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:56,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445389376] [2020-10-21 22:05:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:05:56,715 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:05:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:05:56,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:05:56,732 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:05:56,732 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:05:56,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-21 22:05:56,733 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:05:56,734 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-21 22:05:56,745 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,745 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,746 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,746 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,747 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,747 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,748 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,748 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,748 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,748 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,748 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,748 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,749 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,749 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,749 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,749 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,749 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,749 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,749 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,750 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,750 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,769 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,769 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,769 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,769 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,769 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,770 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,771 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,771 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,771 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,771 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,772 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,772 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,772 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,772 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,773 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,774 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,774 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,774 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,774 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,774 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:05:56,775 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:05:56,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-21 22:05:56,776 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:05:56,776 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:05:56,776 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:05:56,776 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:05:56,776 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:05:56,776 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:05:56,776 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:05:56,776 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:05:56,778 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:05:56,778 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 129 transitions, 322 flow [2020-10-21 22:05:56,778 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 129 transitions, 322 flow [2020-10-21 22:05:56,779 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 138 places, 129 transitions, 322 flow [2020-10-21 22:05:56,812 INFO L129 PetriNetUnfolder]: 7/136 cut-off events. [2020-10-21 22:05:56,812 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-21 22:05:56,816 INFO L80 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 136 events. 7/136 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 235 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 156. Up to 10 conditions per place. [2020-10-21 22:05:56,823 INFO L116 LiptonReduction]: Number of co-enabled transitions 2652 [2020-10-21 22:05:58,877 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-10-21 22:05:59,235 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 22:05:59,243 INFO L131 LiptonReduction]: Checked pairs total: 3837 [2020-10-21 22:05:59,244 INFO L133 LiptonReduction]: Total number of compositions: 139 [2020-10-21 22:05:59,244 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-21 22:05:59,353 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-21 22:05:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-21 22:05:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 22:05:59,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:59,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 22:05:59,354 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]=== [2020-10-21 22:05:59,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:59,354 INFO L82 PathProgramCache]: Analyzing trace with hash 959619, now seen corresponding path program 1 times [2020-10-21 22:05:59,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:59,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089414536] [2020-10-21 22:05:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:05:59,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089414536] [2020-10-21 22:05:59,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:59,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:05:59,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445790743] [2020-10-21 22:05:59,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:05:59,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:59,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:05:59,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:05:59,372 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-21 22:05:59,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:59,418 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-21 22:05:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:05:59,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 22:05:59,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:59,435 INFO L225 Difference]: With dead ends: 1889 [2020-10-21 22:05:59,435 INFO L226 Difference]: Without dead ends: 1767 [2020-10-21 22:05:59,436 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 [2020-10-21 22:05:59,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-21 22:05:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-21 22:05:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-21 22:05:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-21 22:05:59,520 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-21 22:05:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:59,521 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-21 22:05:59,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:05:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-21 22:05:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:05:59,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:59,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:59,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-21 22:05:59,522 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]=== [2020-10-21 22:05:59,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:59,522 INFO L82 PathProgramCache]: Analyzing trace with hash 323825071, now seen corresponding path program 1 times [2020-10-21 22:05:59,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:59,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739674268] [2020-10-21 22:05:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:05:59,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739674268] [2020-10-21 22:05:59,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:59,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:05:59,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989109688] [2020-10-21 22:05:59,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:05:59,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:59,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:05:59,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:05:59,568 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-21 22:05:59,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:59,657 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-21 22:05:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:05:59,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 22:05:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:05:59,684 INFO L225 Difference]: With dead ends: 2905 [2020-10-21 22:05:59,684 INFO L226 Difference]: Without dead ends: 2899 [2020-10-21 22:05:59,686 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 [2020-10-21 22:05:59,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-21 22:05:59,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-21 22:05:59,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-21 22:05:59,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-21 22:05:59,800 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-21 22:05:59,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:05:59,801 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-21 22:05:59,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:05:59,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-21 22:05:59,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:05:59,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:05:59,801 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:05:59,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-21 22:05:59,802 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]=== [2020-10-21 22:05:59,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:05:59,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2079947915, now seen corresponding path program 1 times [2020-10-21 22:05:59,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:05:59,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075889181] [2020-10-21 22:05:59,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:05:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:05:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:05:59,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075889181] [2020-10-21 22:05:59,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:05:59,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:05:59,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183641581] [2020-10-21 22:05:59,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:05:59,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:05:59,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:05:59,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:05:59,840 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-21 22:05:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:05:59,989 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-21 22:05:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:05:59,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 22:05:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:00,028 INFO L225 Difference]: With dead ends: 3204 [2020-10-21 22:06:00,028 INFO L226 Difference]: Without dead ends: 3194 [2020-10-21 22:06:00,029 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 [2020-10-21 22:06:00,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-21 22:06:00,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-21 22:06:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-21 22:06:00,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-21 22:06:00,153 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-21 22:06:00,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:00,155 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-21 22:06:00,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:06:00,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-21 22:06:00,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:06:00,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:00,156 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:00,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-21 22:06:00,157 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]=== [2020-10-21 22:06:00,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:00,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1122196189, now seen corresponding path program 1 times [2020-10-21 22:06:00,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:00,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685582276] [2020-10-21 22:06:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:06:00,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685582276] [2020-10-21 22:06:00,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840104499] [2020-10-21 22:06:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:00,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:06:00,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:06:00,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:00,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 22:06:00,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812352218] [2020-10-21 22:06:00,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:00,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:00,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:00,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:00,305 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 9 states. [2020-10-21 22:06:00,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:00,524 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-21 22:06:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:00,525 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-21 22:06:00,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:00,547 INFO L225 Difference]: With dead ends: 4556 [2020-10-21 22:06:00,548 INFO L226 Difference]: Without dead ends: 4546 [2020-10-21 22:06:00,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 22:06:00,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-21 22:06:00,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-21 22:06:00,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-21 22:06:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-21 22:06:00,673 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-21 22:06:00,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:00,674 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-21 22:06:00,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:00,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-21 22:06:00,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:06:00,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:00,675 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:00,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-21 22:06:00,888 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]=== [2020-10-21 22:06:00,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:00,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1670165689, now seen corresponding path program 2 times [2020-10-21 22:06:00,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:00,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740492723] [2020-10-21 22:06:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:06:00,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740492723] [2020-10-21 22:06:00,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:00,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:06:00,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929686023] [2020-10-21 22:06:00,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:06:00,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:00,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:06:00,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:06:00,966 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-21 22:06:01,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:01,175 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-21 22:06:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:01,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 22:06:01,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:01,193 INFO L225 Difference]: With dead ends: 4612 [2020-10-21 22:06:01,193 INFO L226 Difference]: Without dead ends: 4601 [2020-10-21 22:06:01,195 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 [2020-10-21 22:06:01,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-21 22:06:01,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-21 22:06:01,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-21 22:06:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-21 22:06:01,371 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-21 22:06:01,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:01,372 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-21 22:06:01,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:06:01,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-21 22:06:01,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:06:01,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:01,373 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:01,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-21 22:06:01,373 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]=== [2020-10-21 22:06:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:01,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1347598745, now seen corresponding path program 1 times [2020-10-21 22:06:01,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:01,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837223562] [2020-10-21 22:06:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:01,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837223562] [2020-10-21 22:06:01,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:01,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:06:01,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146086231] [2020-10-21 22:06:01,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:06:01,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:01,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:06:01,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:06:01,408 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-21 22:06:01,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:01,499 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-21 22:06:01,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:06:01,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 22:06:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:01,512 INFO L225 Difference]: With dead ends: 3265 [2020-10-21 22:06:01,513 INFO L226 Difference]: Without dead ends: 3250 [2020-10-21 22:06:01,513 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 [2020-10-21 22:06:01,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-21 22:06:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-21 22:06:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-21 22:06:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-21 22:06:01,604 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-21 22:06:01,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:01,604 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-21 22:06:01,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:06:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-21 22:06:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:06:01,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:01,606 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:01,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-21 22:06:01,606 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]=== [2020-10-21 22:06:01,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:01,606 INFO L82 PathProgramCache]: Analyzing trace with hash -385592249, now seen corresponding path program 1 times [2020-10-21 22:06:01,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:01,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635550988] [2020-10-21 22:06:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:06:01,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635550988] [2020-10-21 22:06:01,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229583969] [2020-10-21 22:06:01,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:01,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:06:01,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:06:01,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:01,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 22:06:01,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293367293] [2020-10-21 22:06:01,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:01,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:01,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:01,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:01,778 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 9 states. [2020-10-21 22:06:02,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:02,013 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-21 22:06:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:02,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-21 22:06:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:02,032 INFO L225 Difference]: With dead ends: 4825 [2020-10-21 22:06:02,032 INFO L226 Difference]: Without dead ends: 4813 [2020-10-21 22:06:02,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 22:06:02,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-21 22:06:02,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-21 22:06:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-21 22:06:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-21 22:06:02,161 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-21 22:06:02,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:02,163 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-21 22:06:02,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-21 22:06:02,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:06:02,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:02,167 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:02,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:02,380 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]=== [2020-10-21 22:06:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:02,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1935931741, now seen corresponding path program 1 times [2020-10-21 22:06:02,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:02,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425028840] [2020-10-21 22:06:02,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:06:02,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425028840] [2020-10-21 22:06:02,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992087986] [2020-10-21 22:06:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:02,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:06:02,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:06:02,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:02,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 22:06:02,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619514752] [2020-10-21 22:06:02,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:02,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:02,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:02,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:02,561 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 9 states. [2020-10-21 22:06:02,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:02,888 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-21 22:06:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:02,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-21 22:06:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:02,904 INFO L225 Difference]: With dead ends: 4942 [2020-10-21 22:06:02,905 INFO L226 Difference]: Without dead ends: 4925 [2020-10-21 22:06:02,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 22:06:02,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-21 22:06:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-21 22:06:03,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-21 22:06:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-21 22:06:03,024 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-21 22:06:03,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:03,025 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-21 22:06:03,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:03,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-21 22:06:03,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:06:03,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:03,026 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:03,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:03,240 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]=== [2020-10-21 22:06:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:03,240 INFO L82 PathProgramCache]: Analyzing trace with hash -2037741461, now seen corresponding path program 2 times [2020-10-21 22:06:03,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:03,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339940703] [2020-10-21 22:06:03,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:03,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339940703] [2020-10-21 22:06:03,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:03,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:06:03,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132975001] [2020-10-21 22:06:03,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:06:03,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:03,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:06:03,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:06:03,287 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-21 22:06:03,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:03,486 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-21 22:06:03,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:03,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:06:03,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:03,500 INFO L225 Difference]: With dead ends: 4934 [2020-10-21 22:06:03,500 INFO L226 Difference]: Without dead ends: 4917 [2020-10-21 22:06:03,501 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 [2020-10-21 22:06:03,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-21 22:06:03,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-21 22:06:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-21 22:06:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-21 22:06:03,618 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-21 22:06:03,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:03,618 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-21 22:06:03,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:06:03,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-21 22:06:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:06:03,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:03,620 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:03,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-21 22:06:03,621 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]=== [2020-10-21 22:06:03,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:03,621 INFO L82 PathProgramCache]: Analyzing trace with hash -2037725899, now seen corresponding path program 2 times [2020-10-21 22:06:03,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:03,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096479791] [2020-10-21 22:06:03,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:03,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096479791] [2020-10-21 22:06:03,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:03,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:06:03,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250733944] [2020-10-21 22:06:03,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:06:03,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:03,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:06:03,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:06:03,679 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-21 22:06:03,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:03,874 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-21 22:06:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:03,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:06:03,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:03,883 INFO L225 Difference]: With dead ends: 4774 [2020-10-21 22:06:03,883 INFO L226 Difference]: Without dead ends: 4757 [2020-10-21 22:06:03,883 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 [2020-10-21 22:06:03,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-21 22:06:04,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-21 22:06:04,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-21 22:06:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-21 22:06:04,037 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-21 22:06:04,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:04,037 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-21 22:06:04,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:06:04,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-21 22:06:04,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:04,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:04,039 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:04,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-21 22:06:04,039 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]=== [2020-10-21 22:06:04,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:04,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1787566869, now seen corresponding path program 1 times [2020-10-21 22:06:04,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:04,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76555574] [2020-10-21 22:06:04,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:06:04,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76555574] [2020-10-21 22:06:04,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555771301] [2020-10-21 22:06:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:04,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:04,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:06:04,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:04,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:04,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998417339] [2020-10-21 22:06:04,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:04,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:04,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:04,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:04,205 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 11 states. [2020-10-21 22:06:04,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:04,757 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-21 22:06:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:04,758 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 22:06:04,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:04,770 INFO L225 Difference]: With dead ends: 6025 [2020-10-21 22:06:04,770 INFO L226 Difference]: Without dead ends: 6017 [2020-10-21 22:06:04,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:04,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-21 22:06:04,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-21 22:06:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-21 22:06:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-21 22:06:04,862 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-21 22:06:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:04,862 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-21 22:06:04,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-21 22:06:04,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:04,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:04,864 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:05,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-21 22:06:05,079 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]=== [2020-10-21 22:06:05,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:05,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1186960285, now seen corresponding path program 2 times [2020-10-21 22:06:05,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:05,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499102253] [2020-10-21 22:06:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:06:05,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499102253] [2020-10-21 22:06:05,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792237211] [2020-10-21 22:06:05,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:05,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:06:05,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:05,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:05,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:06:05,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:05,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:05,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504854002] [2020-10-21 22:06:05,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:05,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:05,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:05,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:05,259 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 11 states. [2020-10-21 22:06:05,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:05,885 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-21 22:06:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:05,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 22:06:05,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:05,895 INFO L225 Difference]: With dead ends: 5914 [2020-10-21 22:06:05,895 INFO L226 Difference]: Without dead ends: 5903 [2020-10-21 22:06:05,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-21 22:06:05,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-21 22:06:05,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-21 22:06:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-21 22:06:05,983 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-21 22:06:05,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:05,984 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-21 22:06:05,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:05,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-21 22:06:05,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:05,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:05,987 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:06,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:06,202 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]=== [2020-10-21 22:06:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:06,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1258711819, now seen corresponding path program 3 times [2020-10-21 22:06:06,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:06,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176024600] [2020-10-21 22:06:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:06:06,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176024600] [2020-10-21 22:06:06,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224132271] [2020-10-21 22:06:06,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:06,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 22:06:06,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:06,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:06,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:06:06,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:06,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:06,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671049390] [2020-10-21 22:06:06,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:06,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:06,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:06,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:06,398 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 11 states. [2020-10-21 22:06:06,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:06,929 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-21 22:06:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:06,930 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 22:06:06,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:06,944 INFO L225 Difference]: With dead ends: 5907 [2020-10-21 22:06:06,944 INFO L226 Difference]: Without dead ends: 5899 [2020-10-21 22:06:06,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:06,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-21 22:06:07,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-21 22:06:07,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-21 22:06:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-21 22:06:07,032 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-21 22:06:07,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:07,032 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-21 22:06:07,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:07,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-21 22:06:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:07,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:07,034 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:07,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-21 22:06:07,249 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]=== [2020-10-21 22:06:07,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:07,250 INFO L82 PathProgramCache]: Analyzing trace with hash 709551919, now seen corresponding path program 4 times [2020-10-21 22:06:07,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:07,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941621505] [2020-10-21 22:06:07,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:06:07,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941621505] [2020-10-21 22:06:07,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516549110] [2020-10-21 22:06:07,313 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:07,372 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:06:07,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:07,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:07,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:06:07,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:07,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:07,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281847581] [2020-10-21 22:06:07,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:07,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:07,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:07,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:07,410 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 11 states. [2020-10-21 22:06:08,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:08,012 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-21 22:06:08,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:08,012 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 22:06:08,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:08,022 INFO L225 Difference]: With dead ends: 5835 [2020-10-21 22:06:08,023 INFO L226 Difference]: Without dead ends: 5824 [2020-10-21 22:06:08,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-21 22:06:08,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-21 22:06:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-21 22:06:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-21 22:06:08,092 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-21 22:06:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:08,093 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-21 22:06:08,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-21 22:06:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:08,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:08,095 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:08,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-21 22:06:08,309 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]=== [2020-10-21 22:06:08,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:08,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1112329447, now seen corresponding path program 1 times [2020-10-21 22:06:08,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:08,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073317902] [2020-10-21 22:06:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:06:08,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073317902] [2020-10-21 22:06:08,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:08,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:06:08,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793491279] [2020-10-21 22:06:08,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:06:08,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:08,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:06:08,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:06:08,357 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 5 states. [2020-10-21 22:06:08,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:08,430 INFO L93 Difference]: Finished difference Result 3016 states and 10840 transitions. [2020-10-21 22:06:08,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:06:08,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 22:06:08,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:08,437 INFO L225 Difference]: With dead ends: 3016 [2020-10-21 22:06:08,437 INFO L226 Difference]: Without dead ends: 3000 [2020-10-21 22:06:08,437 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 [2020-10-21 22:06:08,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-10-21 22:06:08,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2183. [2020-10-21 22:06:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-10-21 22:06:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 8210 transitions. [2020-10-21 22:06:08,486 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 8210 transitions. Word has length 21 [2020-10-21 22:06:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:08,486 INFO L481 AbstractCegarLoop]: Abstraction has 2183 states and 8210 transitions. [2020-10-21 22:06:08,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:06:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 8210 transitions. [2020-10-21 22:06:08,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:08,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:08,488 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:08,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-21 22:06:08,488 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]=== [2020-10-21 22:06:08,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:08,488 INFO L82 PathProgramCache]: Analyzing trace with hash 235546503, now seen corresponding path program 5 times [2020-10-21 22:06:08,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:08,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844376154] [2020-10-21 22:06:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:08,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844376154] [2020-10-21 22:06:08,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:08,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:06:08,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643709796] [2020-10-21 22:06:08,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:08,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:08,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:08,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:08,556 INFO L87 Difference]: Start difference. First operand 2183 states and 8210 transitions. Second operand 9 states. [2020-10-21 22:06:09,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:09,069 INFO L93 Difference]: Finished difference Result 6150 states and 19247 transitions. [2020-10-21 22:06:09,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:09,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:06:09,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:09,081 INFO L225 Difference]: With dead ends: 6150 [2020-10-21 22:06:09,081 INFO L226 Difference]: Without dead ends: 6139 [2020-10-21 22:06:09,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:06:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2020-10-21 22:06:09,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 2096. [2020-10-21 22:06:09,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-10-21 22:06:09,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-10-21 22:06:09,172 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-10-21 22:06:09,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:09,172 INFO L481 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-10-21 22:06:09,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:09,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-10-21 22:06:09,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:09,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:09,174 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:09,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-21 22:06:09,174 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]=== [2020-10-21 22:06:09,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:09,175 INFO L82 PathProgramCache]: Analyzing trace with hash 250486023, now seen corresponding path program 6 times [2020-10-21 22:06:09,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:09,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493458574] [2020-10-21 22:06:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:09,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493458574] [2020-10-21 22:06:09,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:09,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:06:09,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357874281] [2020-10-21 22:06:09,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:09,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:09,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:09,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:09,297 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-10-21 22:06:09,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:09,820 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-10-21 22:06:09,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:09,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:06:09,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:09,831 INFO L225 Difference]: With dead ends: 6017 [2020-10-21 22:06:09,831 INFO L226 Difference]: Without dead ends: 6002 [2020-10-21 22:06:09,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:06:09,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-10-21 22:06:09,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-10-21 22:06:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-21 22:06:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-21 22:06:09,924 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-21 22:06:09,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:09,924 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-21 22:06:09,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-21 22:06:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 22:06:09,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:09,926 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:09,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-21 22:06:09,927 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]=== [2020-10-21 22:06:09,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:09,927 INFO L82 PathProgramCache]: Analyzing trace with hash -128688571, now seen corresponding path program 1 times [2020-10-21 22:06:09,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:09,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822553652] [2020-10-21 22:06:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:06:09,938 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:06:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:06:09,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:06:09,952 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:06:09,953 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:06:09,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-21 22:06:09,954 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:06:09,954 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-21 22:06:09,966 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,966 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,967 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,967 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,968 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,968 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,968 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,968 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,968 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,968 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,968 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,969 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,969 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,969 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,969 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,969 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,969 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,969 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,969 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,970 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,970 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,970 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,970 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,970 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,970 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,970 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,971 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,971 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,971 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,971 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,971 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,971 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,971 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,972 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,972 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,972 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,972 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,972 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,972 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,972 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,976 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,976 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,976 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,976 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,976 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,976 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,976 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,977 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,977 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,977 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,977 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,977 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,977 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,977 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,978 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,978 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,978 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,978 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,978 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,978 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,978 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,980 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,980 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,980 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,981 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,981 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,981 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,981 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,981 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,981 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,981 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,982 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,982 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,982 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,984 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,989 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,989 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,990 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,992 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,992 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,995 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,995 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,995 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,995 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,995 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,996 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,996 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,996 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,997 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,997 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,997 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,998 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,998 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,998 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,998 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,999 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,999 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,999 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,999 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:09,999 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:10,000 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:10,000 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:10,000 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:10,000 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:10,000 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:06:10,001 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:06:10,001 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-21 22:06:10,002 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:06:10,002 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:06:10,002 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:06:10,002 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:06:10,002 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:06:10,002 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:06:10,002 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:06:10,002 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:06:10,004 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:06:10,004 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 152 transitions, 394 flow [2020-10-21 22:06:10,004 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 152 transitions, 394 flow [2020-10-21 22:06:10,004 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 163 places, 152 transitions, 394 flow [2020-10-21 22:06:10,029 INFO L129 PetriNetUnfolder]: 8/158 cut-off events. [2020-10-21 22:06:10,029 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-21 22:06:10,031 INFO L80 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 158 events. 8/158 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 185. Up to 12 conditions per place. [2020-10-21 22:06:10,037 INFO L116 LiptonReduction]: Number of co-enabled transitions 3390 [2020-10-21 22:06:12,410 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-10-21 22:06:12,554 INFO L131 LiptonReduction]: Checked pairs total: 4983 [2020-10-21 22:06:12,554 INFO L133 LiptonReduction]: Total number of compositions: 164 [2020-10-21 22:06:12,554 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-21 22:06:12,837 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-21 22:06:12,837 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-21 22:06:12,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 22:06:12,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:12,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 22:06:12,838 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]=== [2020-10-21 22:06:12,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:12,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1289650, now seen corresponding path program 1 times [2020-10-21 22:06:12,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:12,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984686996] [2020-10-21 22:06:12,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:06:12,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984686996] [2020-10-21 22:06:12,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:12,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:06:12,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208619999] [2020-10-21 22:06:12,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:06:12,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:12,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:06:12,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:06:12,856 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-21 22:06:12,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:12,928 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-21 22:06:12,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:06:12,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 22:06:12,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:12,956 INFO L225 Difference]: With dead ends: 5844 [2020-10-21 22:06:12,956 INFO L226 Difference]: Without dead ends: 5479 [2020-10-21 22:06:12,956 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 [2020-10-21 22:06:13,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-21 22:06:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-21 22:06:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-21 22:06:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-21 22:06:13,212 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-21 22:06:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:13,212 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-21 22:06:13,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:06:13,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-21 22:06:13,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:06:13,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:13,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:13,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-21 22:06:13,213 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]=== [2020-10-21 22:06:13,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:13,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1325680319, now seen corresponding path program 1 times [2020-10-21 22:06:13,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:13,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176305189] [2020-10-21 22:06:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:13,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:06:13,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176305189] [2020-10-21 22:06:13,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:13,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:06:13,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624379433] [2020-10-21 22:06:13,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:06:13,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:13,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:06:13,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:06:13,237 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-21 22:06:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:13,364 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-21 22:06:13,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:06:13,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 22:06:13,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:13,396 INFO L225 Difference]: With dead ends: 9673 [2020-10-21 22:06:13,397 INFO L226 Difference]: Without dead ends: 9666 [2020-10-21 22:06:13,397 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 [2020-10-21 22:06:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-21 22:06:13,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-21 22:06:13,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-21 22:06:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-21 22:06:13,633 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-21 22:06:13,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:13,634 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-21 22:06:13,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:06:13,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-21 22:06:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:06:13,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:13,634 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:13,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-21 22:06:13,634 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]=== [2020-10-21 22:06:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:13,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1083735800, now seen corresponding path program 1 times [2020-10-21 22:06:13,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:13,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503811291] [2020-10-21 22:06:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:06:13,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503811291] [2020-10-21 22:06:13,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:13,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:06:13,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001674476] [2020-10-21 22:06:13,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:06:13,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:13,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:06:13,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:06:13,659 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-21 22:06:13,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:13,813 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-21 22:06:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:06:13,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 22:06:13,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:13,853 INFO L225 Difference]: With dead ends: 11081 [2020-10-21 22:06:13,853 INFO L226 Difference]: Without dead ends: 11068 [2020-10-21 22:06:13,853 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 [2020-10-21 22:06:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-21 22:06:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-21 22:06:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-21 22:06:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-21 22:06:14,757 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-21 22:06:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:14,758 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-21 22:06:14,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:06:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-21 22:06:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:06:14,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:14,758 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:14,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-21 22:06:14,759 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]=== [2020-10-21 22:06:14,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:14,759 INFO L82 PathProgramCache]: Analyzing trace with hash 717119558, now seen corresponding path program 1 times [2020-10-21 22:06:14,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:14,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441272814] [2020-10-21 22:06:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:06:14,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441272814] [2020-10-21 22:06:14,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142194607] [2020-10-21 22:06:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:14,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:06:14,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:06:14,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:14,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 22:06:14,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082302095] [2020-10-21 22:06:14,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:14,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:14,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:14,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:14,903 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 9 states. [2020-10-21 22:06:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:15,209 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-21 22:06:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:15,210 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-21 22:06:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:15,257 INFO L225 Difference]: With dead ends: 16749 [2020-10-21 22:06:15,257 INFO L226 Difference]: Without dead ends: 16736 [2020-10-21 22:06:15,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 22:06:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-21 22:06:15,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-21 22:06:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-21 22:06:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-21 22:06:15,558 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-21 22:06:15,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:15,558 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-21 22:06:15,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:15,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-21 22:06:15,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:06:15,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:15,559 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:15,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:15,765 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]=== [2020-10-21 22:06:15,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:15,766 INFO L82 PathProgramCache]: Analyzing trace with hash 2088019334, now seen corresponding path program 2 times [2020-10-21 22:06:15,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:15,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257384572] [2020-10-21 22:06:15,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:15,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:06:15,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257384572] [2020-10-21 22:06:15,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:15,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:06:15,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343935647] [2020-10-21 22:06:15,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:06:15,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:15,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:06:15,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:06:15,801 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-21 22:06:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:16,232 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-21 22:06:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:16,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 22:06:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:16,277 INFO L225 Difference]: With dead ends: 17085 [2020-10-21 22:06:16,277 INFO L226 Difference]: Without dead ends: 17071 [2020-10-21 22:06:16,278 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 [2020-10-21 22:06:16,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-21 22:06:16,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-21 22:06:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-21 22:06:16,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-21 22:06:16,575 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-21 22:06:16,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:16,575 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-21 22:06:16,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:06:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-21 22:06:16,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:06:16,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:16,576 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:16,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-21 22:06:16,576 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]=== [2020-10-21 22:06:16,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:16,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2132652047, now seen corresponding path program 1 times [2020-10-21 22:06:16,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:16,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989590] [2020-10-21 22:06:16,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:16,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989590] [2020-10-21 22:06:16,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:16,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:06:16,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222346798] [2020-10-21 22:06:16,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:06:16,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:16,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:06:16,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:06:16,609 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-21 22:06:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:16,722 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-21 22:06:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:06:16,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 22:06:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:16,752 INFO L225 Difference]: With dead ends: 12234 [2020-10-21 22:06:16,752 INFO L226 Difference]: Without dead ends: 12212 [2020-10-21 22:06:16,753 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 [2020-10-21 22:06:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-21 22:06:16,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-21 22:06:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-21 22:06:17,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-21 22:06:17,005 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-21 22:06:17,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:17,005 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-21 22:06:17,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:06:17,005 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-21 22:06:17,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:06:17,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:17,006 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:17,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-21 22:06:17,006 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]=== [2020-10-21 22:06:17,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:17,007 INFO L82 PathProgramCache]: Analyzing trace with hash 930798143, now seen corresponding path program 1 times [2020-10-21 22:06:17,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:17,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41520288] [2020-10-21 22:06:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:06:17,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41520288] [2020-10-21 22:06:17,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633414188] [2020-10-21 22:06:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:17,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:06:17,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:06:17,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:17,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 22:06:17,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398162205] [2020-10-21 22:06:17,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:17,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:17,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:17,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:17,324 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 9 states. [2020-10-21 22:06:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:17,636 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-21 22:06:17,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:17,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-21 22:06:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:17,685 INFO L225 Difference]: With dead ends: 19016 [2020-10-21 22:06:17,685 INFO L226 Difference]: Without dead ends: 18998 [2020-10-21 22:06:17,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 22:06:17,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-21 22:06:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-21 22:06:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-21 22:06:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-21 22:06:18,032 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-21 22:06:18,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:18,033 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-21 22:06:18,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-21 22:06:18,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:06:18,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:18,034 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:18,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-21 22:06:18,241 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]=== [2020-10-21 22:06:18,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:18,242 INFO L82 PathProgramCache]: Analyzing trace with hash -779215809, now seen corresponding path program 2 times [2020-10-21 22:06:18,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:18,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803833393] [2020-10-21 22:06:18,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:18,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803833393] [2020-10-21 22:06:18,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:18,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:06:18,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507517473] [2020-10-21 22:06:18,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:06:18,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:18,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:06:18,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:06:18,284 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 7 states. [2020-10-21 22:06:18,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:18,621 INFO L93 Difference]: Finished difference Result 19420 states and 77854 transitions. [2020-10-21 22:06:18,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:18,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:06:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:18,706 INFO L225 Difference]: With dead ends: 19420 [2020-10-21 22:06:18,706 INFO L226 Difference]: Without dead ends: 19395 [2020-10-21 22:06:18,707 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 [2020-10-21 22:06:18,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19395 states. [2020-10-21 22:06:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19395 to 8129. [2020-10-21 22:06:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8129 states. [2020-10-21 22:06:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 37298 transitions. [2020-10-21 22:06:19,265 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 37298 transitions. Word has length 19 [2020-10-21 22:06:19,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:19,266 INFO L481 AbstractCegarLoop]: Abstraction has 8129 states and 37298 transitions. [2020-10-21 22:06:19,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:06:19,266 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 37298 transitions. [2020-10-21 22:06:19,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:06:19,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:19,267 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:19,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-21 22:06:19,267 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]=== [2020-10-21 22:06:19,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:19,267 INFO L82 PathProgramCache]: Analyzing trace with hash -779225047, now seen corresponding path program 1 times [2020-10-21 22:06:19,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:19,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776390559] [2020-10-21 22:06:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:19,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776390559] [2020-10-21 22:06:19,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:19,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:06:19,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60532929] [2020-10-21 22:06:19,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:06:19,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:19,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:06:19,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:06:19,312 INFO L87 Difference]: Start difference. First operand 8129 states and 37298 transitions. Second operand 7 states. [2020-10-21 22:06:19,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:19,730 INFO L93 Difference]: Finished difference Result 19373 states and 77785 transitions. [2020-10-21 22:06:19,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:19,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:06:19,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:19,822 INFO L225 Difference]: With dead ends: 19373 [2020-10-21 22:06:19,822 INFO L226 Difference]: Without dead ends: 19348 [2020-10-21 22:06:19,824 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 [2020-10-21 22:06:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19348 states. [2020-10-21 22:06:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19348 to 8375. [2020-10-21 22:06:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8375 states. [2020-10-21 22:06:20,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8375 states to 8375 states and 38394 transitions. [2020-10-21 22:06:20,438 INFO L78 Accepts]: Start accepts. Automaton has 8375 states and 38394 transitions. Word has length 19 [2020-10-21 22:06:20,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:20,438 INFO L481 AbstractCegarLoop]: Abstraction has 8375 states and 38394 transitions. [2020-10-21 22:06:20,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:06:20,438 INFO L276 IsEmpty]: Start isEmpty. Operand 8375 states and 38394 transitions. [2020-10-21 22:06:20,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:06:20,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:20,439 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:20,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-21 22:06:20,439 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]=== [2020-10-21 22:06:20,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:20,440 INFO L82 PathProgramCache]: Analyzing trace with hash -787409047, now seen corresponding path program 2 times [2020-10-21 22:06:20,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:20,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002231280] [2020-10-21 22:06:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:20,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002231280] [2020-10-21 22:06:20,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:20,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:06:20,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360587106] [2020-10-21 22:06:20,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:06:20,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:20,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:06:20,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:06:20,487 INFO L87 Difference]: Start difference. First operand 8375 states and 38394 transitions. Second operand 7 states. [2020-10-21 22:06:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:20,771 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-21 22:06:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:20,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:06:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:20,821 INFO L225 Difference]: With dead ends: 19555 [2020-10-21 22:06:20,821 INFO L226 Difference]: Without dead ends: 19530 [2020-10-21 22:06:20,821 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 [2020-10-21 22:06:21,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-21 22:06:21,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-21 22:06:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-21 22:06:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-21 22:06:21,331 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-21 22:06:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:21,332 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-21 22:06:21,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:06:21,332 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-21 22:06:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:21,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:21,333 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:21,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-21 22:06:21,334 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]=== [2020-10-21 22:06:21,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:21,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1143809783, now seen corresponding path program 1 times [2020-10-21 22:06:21,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:21,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634032847] [2020-10-21 22:06:21,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:06:21,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634032847] [2020-10-21 22:06:21,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918036740] [2020-10-21 22:06:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:21,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:21,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:06:21,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:21,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:21,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557677026] [2020-10-21 22:06:21,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:21,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:21,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:21,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:21,513 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 11 states. [2020-10-21 22:06:22,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:22,201 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-21 22:06:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:22,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 22:06:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:22,266 INFO L225 Difference]: With dead ends: 26969 [2020-10-21 22:06:22,266 INFO L226 Difference]: Without dead ends: 26957 [2020-10-21 22:06:22,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-21 22:06:22,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8208. [2020-10-21 22:06:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8208 states. [2020-10-21 22:06:22,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8208 states to 8208 states and 37640 transitions. [2020-10-21 22:06:22,711 INFO L78 Accepts]: Start accepts. Automaton has 8208 states and 37640 transitions. Word has length 21 [2020-10-21 22:06:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:22,712 INFO L481 AbstractCegarLoop]: Abstraction has 8208 states and 37640 transitions. [2020-10-21 22:06:22,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:22,712 INFO L276 IsEmpty]: Start isEmpty. Operand 8208 states and 37640 transitions. [2020-10-21 22:06:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:22,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:22,713 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:22,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-10-21 22:06:22,914 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]=== [2020-10-21 22:06:22,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:22,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1135625783, now seen corresponding path program 2 times [2020-10-21 22:06:22,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:22,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86547769] [2020-10-21 22:06:22,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:06:23,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86547769] [2020-10-21 22:06:23,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765633508] [2020-10-21 22:06:23,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:06:23,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:06:23,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:23,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:23,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:06:23,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:23,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:23,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853945484] [2020-10-21 22:06:23,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:23,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:23,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:23,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:23,224 INFO L87 Difference]: Start difference. First operand 8208 states and 37640 transitions. Second operand 11 states. [2020-10-21 22:06:23,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:23,925 INFO L93 Difference]: Finished difference Result 26669 states and 100297 transitions. [2020-10-21 22:06:23,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:23,926 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 22:06:23,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:23,989 INFO L225 Difference]: With dead ends: 26669 [2020-10-21 22:06:23,989 INFO L226 Difference]: Without dead ends: 26653 [2020-10-21 22:06:23,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26653 states. [2020-10-21 22:06:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26653 to 8091. [2020-10-21 22:06:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-21 22:06:24,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-21 22:06:24,417 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-21 22:06:24,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:24,417 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-21 22:06:24,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:24,417 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-21 22:06:24,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:24,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:24,418 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:24,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:24,619 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]=== [2020-10-21 22:06:24,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:24,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1502091017, now seen corresponding path program 3 times [2020-10-21 22:06:24,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:24,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427324030] [2020-10-21 22:06:24,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:24,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427324030] [2020-10-21 22:06:24,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:24,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:06:24,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030285232] [2020-10-21 22:06:24,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:24,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:24,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:24,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:24,671 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 9 states. [2020-10-21 22:06:25,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:25,420 INFO L93 Difference]: Finished difference Result 26678 states and 100382 transitions. [2020-10-21 22:06:25,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:25,420 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:06:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:25,661 INFO L225 Difference]: With dead ends: 26678 [2020-10-21 22:06:25,661 INFO L226 Difference]: Without dead ends: 26666 [2020-10-21 22:06:25,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:06:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26666 states. [2020-10-21 22:06:26,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26666 to 7869. [2020-10-21 22:06:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7869 states. [2020-10-21 22:06:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 36086 transitions. [2020-10-21 22:06:26,036 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 36086 transitions. Word has length 21 [2020-10-21 22:06:26,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:26,036 INFO L481 AbstractCegarLoop]: Abstraction has 7869 states and 36086 transitions. [2020-10-21 22:06:26,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 36086 transitions. [2020-10-21 22:06:26,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:26,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:26,037 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:26,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-21 22:06:26,037 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]=== [2020-10-21 22:06:26,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:26,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1510959497, now seen corresponding path program 4 times [2020-10-21 22:06:26,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:26,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772169773] [2020-10-21 22:06:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:26,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772169773] [2020-10-21 22:06:26,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:26,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:06:26,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221403264] [2020-10-21 22:06:26,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:26,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:26,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:26,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:26,093 INFO L87 Difference]: Start difference. First operand 7869 states and 36086 transitions. Second operand 9 states. [2020-10-21 22:06:26,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:26,703 INFO L93 Difference]: Finished difference Result 26497 states and 99670 transitions. [2020-10-21 22:06:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:26,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:06:26,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:26,769 INFO L225 Difference]: With dead ends: 26497 [2020-10-21 22:06:26,769 INFO L226 Difference]: Without dead ends: 26481 [2020-10-21 22:06:26,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:06:26,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26481 states. [2020-10-21 22:06:27,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26481 to 7756. [2020-10-21 22:06:27,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7756 states. [2020-10-21 22:06:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7756 states to 7756 states and 35534 transitions. [2020-10-21 22:06:27,156 INFO L78 Accepts]: Start accepts. Automaton has 7756 states and 35534 transitions. Word has length 21 [2020-10-21 22:06:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:27,156 INFO L481 AbstractCegarLoop]: Abstraction has 7756 states and 35534 transitions. [2020-10-21 22:06:27,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 7756 states and 35534 transitions. [2020-10-21 22:06:27,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:27,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:27,157 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:27,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-21 22:06:27,158 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]=== [2020-10-21 22:06:27,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:27,158 INFO L82 PathProgramCache]: Analyzing trace with hash 540308572, now seen corresponding path program 1 times [2020-10-21 22:06:27,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:27,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663445548] [2020-10-21 22:06:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:06:27,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663445548] [2020-10-21 22:06:27,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:27,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:06:27,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389047512] [2020-10-21 22:06:27,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:06:27,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:27,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:06:27,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:06:27,185 INFO L87 Difference]: Start difference. First operand 7756 states and 35534 transitions. Second operand 5 states. [2020-10-21 22:06:27,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:27,313 INFO L93 Difference]: Finished difference Result 13259 states and 57521 transitions. [2020-10-21 22:06:27,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:06:27,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 22:06:27,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:27,349 INFO L225 Difference]: With dead ends: 13259 [2020-10-21 22:06:27,349 INFO L226 Difference]: Without dead ends: 13228 [2020-10-21 22:06:27,349 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 [2020-10-21 22:06:27,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13228 states. [2020-10-21 22:06:27,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13228 to 9263. [2020-10-21 22:06:27,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9263 states. [2020-10-21 22:06:27,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 42388 transitions. [2020-10-21 22:06:27,782 INFO L78 Accepts]: Start accepts. Automaton has 9263 states and 42388 transitions. Word has length 21 [2020-10-21 22:06:27,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:27,782 INFO L481 AbstractCegarLoop]: Abstraction has 9263 states and 42388 transitions. [2020-10-21 22:06:27,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:06:27,782 INFO L276 IsEmpty]: Start isEmpty. Operand 9263 states and 42388 transitions. [2020-10-21 22:06:27,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:27,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:27,784 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:27,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-21 22:06:27,784 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]=== [2020-10-21 22:06:27,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:27,785 INFO L82 PathProgramCache]: Analyzing trace with hash -785848905, now seen corresponding path program 5 times [2020-10-21 22:06:27,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:27,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370150703] [2020-10-21 22:06:27,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:27,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370150703] [2020-10-21 22:06:27,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:27,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:06:27,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018586020] [2020-10-21 22:06:27,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:27,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:27,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:27,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:27,844 INFO L87 Difference]: Start difference. First operand 9263 states and 42388 transitions. Second operand 9 states. [2020-10-21 22:06:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:28,504 INFO L93 Difference]: Finished difference Result 29796 states and 113861 transitions. [2020-10-21 22:06:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:28,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:06:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:28,577 INFO L225 Difference]: With dead ends: 29796 [2020-10-21 22:06:28,577 INFO L226 Difference]: Without dead ends: 29778 [2020-10-21 22:06:28,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:06:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29778 states. [2020-10-21 22:06:29,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29778 to 8972. [2020-10-21 22:06:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8972 states. [2020-10-21 22:06:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8972 states to 8972 states and 41051 transitions. [2020-10-21 22:06:29,042 INFO L78 Accepts]: Start accepts. Automaton has 8972 states and 41051 transitions. Word has length 21 [2020-10-21 22:06:29,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:29,043 INFO L481 AbstractCegarLoop]: Abstraction has 8972 states and 41051 transitions. [2020-10-21 22:06:29,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 8972 states and 41051 transitions. [2020-10-21 22:06:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:06:29,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:29,044 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:29,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-21 22:06:29,045 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]=== [2020-10-21 22:06:29,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:29,045 INFO L82 PathProgramCache]: Analyzing trace with hash -785164425, now seen corresponding path program 6 times [2020-10-21 22:06:29,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:29,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597986519] [2020-10-21 22:06:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:29,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:29,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597986519] [2020-10-21 22:06:29,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:29,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:06:29,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747051452] [2020-10-21 22:06:29,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:29,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:29,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:29,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:29,101 INFO L87 Difference]: Start difference. First operand 8972 states and 41051 transitions. Second operand 9 states. [2020-10-21 22:06:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:29,989 INFO L93 Difference]: Finished difference Result 29387 states and 112119 transitions. [2020-10-21 22:06:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:29,990 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:06:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:30,071 INFO L225 Difference]: With dead ends: 29387 [2020-10-21 22:06:30,071 INFO L226 Difference]: Without dead ends: 29364 [2020-10-21 22:06:30,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:06:30,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29364 states. [2020-10-21 22:06:30,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29364 to 8573. [2020-10-21 22:06:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-21 22:06:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-21 22:06:30,545 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-21 22:06:30,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:30,546 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-21 22:06:30,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:30,546 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-21 22:06:30,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:06:30,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:30,547 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:30,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-21 22:06:30,548 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]=== [2020-10-21 22:06:30,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:30,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1740842922, now seen corresponding path program 1 times [2020-10-21 22:06:30,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:30,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363979943] [2020-10-21 22:06:30,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 22:06:30,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363979943] [2020-10-21 22:06:30,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218355839] [2020-10-21 22:06:30,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:30,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:06:30,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 22:06:30,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:30,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 22:06:30,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059248433] [2020-10-21 22:06:30,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:30,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:30,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:30,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:30,706 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 9 states. [2020-10-21 22:06:31,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:31,045 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-21 22:06:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:31,045 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-21 22:06:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:31,093 INFO L225 Difference]: With dead ends: 19727 [2020-10-21 22:06:31,093 INFO L226 Difference]: Without dead ends: 19703 [2020-10-21 22:06:31,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 22:06:31,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-21 22:06:31,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-21 22:06:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-21 22:06:31,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-21 22:06:31,447 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-21 22:06:31,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:31,448 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-21 22:06:31,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-21 22:06:31,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:06:31,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:31,450 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:31,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-21 22:06:31,651 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]=== [2020-10-21 22:06:31,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:31,652 INFO L82 PathProgramCache]: Analyzing trace with hash -2019219285, now seen corresponding path program 1 times [2020-10-21 22:06:31,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:31,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91996676] [2020-10-21 22:06:31,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:31,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91996676] [2020-10-21 22:06:31,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218267367] [2020-10-21 22:06:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:06:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:31,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:06:31,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:31,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:31,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 22:06:31,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974929148] [2020-10-21 22:06:31,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:31,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:31,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:31,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:31,799 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 9 states. [2020-10-21 22:06:32,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:32,112 INFO L93 Difference]: Finished difference Result 20670 states and 84217 transitions. [2020-10-21 22:06:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:32,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-21 22:06:32,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:32,164 INFO L225 Difference]: With dead ends: 20670 [2020-10-21 22:06:32,165 INFO L226 Difference]: Without dead ends: 20642 [2020-10-21 22:06:32,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 22:06:32,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20642 states. [2020-10-21 22:06:32,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20642 to 9111. [2020-10-21 22:06:32,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9111 states. [2020-10-21 22:06:32,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9111 states to 9111 states and 41667 transitions. [2020-10-21 22:06:32,663 INFO L78 Accepts]: Start accepts. Automaton has 9111 states and 41667 transitions. Word has length 23 [2020-10-21 22:06:32,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:32,664 INFO L481 AbstractCegarLoop]: Abstraction has 9111 states and 41667 transitions. [2020-10-21 22:06:32,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand 9111 states and 41667 transitions. [2020-10-21 22:06:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:06:32,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:32,667 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:32,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:32,881 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]=== [2020-10-21 22:06:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:32,881 INFO L82 PathProgramCache]: Analyzing trace with hash -2015481372, now seen corresponding path program 1 times [2020-10-21 22:06:32,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:32,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43035294] [2020-10-21 22:06:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 22:06:32,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43035294] [2020-10-21 22:06:32,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868003393] [2020-10-21 22:06:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:33,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:06:33,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 22:06:33,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:33,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 22:06:33,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386322292] [2020-10-21 22:06:33,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:33,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:33,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:33,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:33,025 INFO L87 Difference]: Start difference. First operand 9111 states and 41667 transitions. Second operand 9 states. [2020-10-21 22:06:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:33,343 INFO L93 Difference]: Finished difference Result 21416 states and 87392 transitions. [2020-10-21 22:06:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:33,343 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-21 22:06:33,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:33,396 INFO L225 Difference]: With dead ends: 21416 [2020-10-21 22:06:33,396 INFO L226 Difference]: Without dead ends: 21379 [2020-10-21 22:06:33,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 22:06:33,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21379 states. [2020-10-21 22:06:33,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21379 to 9320. [2020-10-21 22:06:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-21 22:06:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-21 22:06:33,771 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-21 22:06:33,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:33,772 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-21 22:06:33,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-21 22:06:33,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:06:33,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:33,774 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:33,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:33,975 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]=== [2020-10-21 22:06:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:33,975 INFO L82 PathProgramCache]: Analyzing trace with hash -454504671, now seen corresponding path program 2 times [2020-10-21 22:06:33,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:33,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208356326] [2020-10-21 22:06:33,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:06:34,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208356326] [2020-10-21 22:06:34,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:34,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:06:34,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307465974] [2020-10-21 22:06:34,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:06:34,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:34,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:06:34,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:06:34,018 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-21 22:06:34,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:34,312 INFO L93 Difference]: Finished difference Result 21469 states and 87720 transitions. [2020-10-21 22:06:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:34,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:06:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:34,365 INFO L225 Difference]: With dead ends: 21469 [2020-10-21 22:06:34,365 INFO L226 Difference]: Without dead ends: 21432 [2020-10-21 22:06:34,366 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 [2020-10-21 22:06:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21432 states. [2020-10-21 22:06:34,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21432 to 9401. [2020-10-21 22:06:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-21 22:06:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-21 22:06:34,745 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-21 22:06:34,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:34,746 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-21 22:06:34,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:06:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-21 22:06:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:06:34,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:34,748 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:34,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-21 22:06:34,748 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]=== [2020-10-21 22:06:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash -454503958, now seen corresponding path program 2 times [2020-10-21 22:06:34,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:34,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408456433] [2020-10-21 22:06:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:06:34,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408456433] [2020-10-21 22:06:34,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:34,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:06:34,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005432582] [2020-10-21 22:06:34,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:06:34,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:34,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:06:34,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:06:34,783 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-21 22:06:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:35,204 INFO L93 Difference]: Finished difference Result 21218 states and 86469 transitions. [2020-10-21 22:06:35,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:35,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:06:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:35,267 INFO L225 Difference]: With dead ends: 21218 [2020-10-21 22:06:35,267 INFO L226 Difference]: Without dead ends: 21181 [2020-10-21 22:06:35,268 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 [2020-10-21 22:06:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2020-10-21 22:06:35,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 9396. [2020-10-21 22:06:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-21 22:06:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-21 22:06:35,628 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-21 22:06:35,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:35,628 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-21 22:06:35,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:06:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-21 22:06:35,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:06:35,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:35,631 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:35,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-21 22:06:35,631 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]=== [2020-10-21 22:06:35,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:35,631 INFO L82 PathProgramCache]: Analyzing trace with hash -454513196, now seen corresponding path program 2 times [2020-10-21 22:06:35,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:35,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222501104] [2020-10-21 22:06:35,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:06:35,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222501104] [2020-10-21 22:06:35,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:35,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:06:35,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180313198] [2020-10-21 22:06:35,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:06:35,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:35,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:06:35,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:06:35,665 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-21 22:06:35,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:35,966 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-10-21 22:06:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:06:35,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:06:35,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:36,017 INFO L225 Difference]: With dead ends: 21067 [2020-10-21 22:06:36,018 INFO L226 Difference]: Without dead ends: 21030 [2020-10-21 22:06:36,018 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 [2020-10-21 22:06:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-10-21 22:06:36,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-10-21 22:06:36,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-21 22:06:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-21 22:06:36,408 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-21 22:06:36,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:36,408 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-21 22:06:36,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:06:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-21 22:06:36,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:36,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:36,412 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:36,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-21 22:06:36,413 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]=== [2020-10-21 22:06:36,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:36,413 INFO L82 PathProgramCache]: Analyzing trace with hash 643055737, now seen corresponding path program 1 times [2020-10-21 22:06:36,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:36,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894889645] [2020-10-21 22:06:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:36,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:06:36,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894889645] [2020-10-21 22:06:36,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215518824] [2020-10-21 22:06:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:36,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:36,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:06:36,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:36,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:36,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538456124] [2020-10-21 22:06:36,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:36,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:36,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:36,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:36,582 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 11 states. [2020-10-21 22:06:37,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:37,332 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-21 22:06:37,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:37,333 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 22:06:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:37,405 INFO L225 Difference]: With dead ends: 30145 [2020-10-21 22:06:37,406 INFO L226 Difference]: Without dead ends: 30125 [2020-10-21 22:06:37,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:37,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-21 22:06:37,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9346. [2020-10-21 22:06:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9346 states. [2020-10-21 22:06:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9346 states to 9346 states and 42602 transitions. [2020-10-21 22:06:38,129 INFO L78 Accepts]: Start accepts. Automaton has 9346 states and 42602 transitions. Word has length 25 [2020-10-21 22:06:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:38,129 INFO L481 AbstractCegarLoop]: Abstraction has 9346 states and 42602 transitions. [2020-10-21 22:06:38,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 9346 states and 42602 transitions. [2020-10-21 22:06:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:38,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:38,133 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:38,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:38,333 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]=== [2020-10-21 22:06:38,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:38,334 INFO L82 PathProgramCache]: Analyzing trace with hash 646793650, now seen corresponding path program 1 times [2020-10-21 22:06:38,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:38,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985995157] [2020-10-21 22:06:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 22:06:38,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985995157] [2020-10-21 22:06:38,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788915434] [2020-10-21 22:06:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:38,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:38,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 22:06:38,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:38,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:38,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110164603] [2020-10-21 22:06:38,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:38,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:38,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:38,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:38,498 INFO L87 Difference]: Start difference. First operand 9346 states and 42602 transitions. Second operand 11 states. [2020-10-21 22:06:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:39,208 INFO L93 Difference]: Finished difference Result 29704 states and 113936 transitions. [2020-10-21 22:06:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:39,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 22:06:39,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:39,277 INFO L225 Difference]: With dead ends: 29704 [2020-10-21 22:06:39,278 INFO L226 Difference]: Without dead ends: 29684 [2020-10-21 22:06:39,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29684 states. [2020-10-21 22:06:39,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29684 to 9291. [2020-10-21 22:06:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-21 22:06:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-21 22:06:39,725 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-21 22:06:39,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:39,725 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-21 22:06:39,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:39,725 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-21 22:06:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:39,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:39,728 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:39,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-21 22:06:39,931 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]=== [2020-10-21 22:06:39,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:39,932 INFO L82 PathProgramCache]: Analyzing trace with hash -2087196945, now seen corresponding path program 2 times [2020-10-21 22:06:39,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:39,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001544144] [2020-10-21 22:06:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:39,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 22:06:39,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001544144] [2020-10-21 22:06:39,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104181167] [2020-10-21 22:06:39,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:06:40,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:06:40,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:40,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:40,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 22:06:40,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:40,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:40,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057900055] [2020-10-21 22:06:40,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:40,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:40,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:40,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:40,101 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 11 states. [2020-10-21 22:06:40,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:40,801 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-21 22:06:40,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:40,802 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 22:06:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:40,868 INFO L225 Difference]: With dead ends: 29267 [2020-10-21 22:06:40,868 INFO L226 Difference]: Without dead ends: 29245 [2020-10-21 22:06:40,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-21 22:06:41,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-21 22:06:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-21 22:06:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-21 22:06:41,311 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-21 22:06:41,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:41,311 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-21 22:06:41,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-21 22:06:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:41,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:41,314 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:41,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-21 22:06:41,515 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]=== [2020-10-21 22:06:41,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:41,515 INFO L82 PathProgramCache]: Analyzing trace with hash -2087205470, now seen corresponding path program 2 times [2020-10-21 22:06:41,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:41,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892317694] [2020-10-21 22:06:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 22:06:41,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892317694] [2020-10-21 22:06:41,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149208230] [2020-10-21 22:06:41,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:06:41,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:06:41,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:41,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:41,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 22:06:41,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:41,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:41,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420551367] [2020-10-21 22:06:41,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:41,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:41,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:41,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:41,844 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 11 states. [2020-10-21 22:06:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:42,539 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-21 22:06:42,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:42,539 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 22:06:42,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:42,604 INFO L225 Difference]: With dead ends: 28920 [2020-10-21 22:06:42,604 INFO L226 Difference]: Without dead ends: 28898 [2020-10-21 22:06:42,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:42,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-21 22:06:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-21 22:06:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-21 22:06:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-21 22:06:43,054 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-21 22:06:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:43,055 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-21 22:06:43,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-21 22:06:43,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:43,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:43,059 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:43,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-21 22:06:43,260 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]=== [2020-10-21 22:06:43,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:43,260 INFO L82 PathProgramCache]: Analyzing trace with hash 855486073, now seen corresponding path program 3 times [2020-10-21 22:06:43,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:43,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803602072] [2020-10-21 22:06:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:43,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803602072] [2020-10-21 22:06:43,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016645602] [2020-10-21 22:06:43,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:06:43,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 22:06:43,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:43,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:43,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:43,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:43,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:43,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925438619] [2020-10-21 22:06:43,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:43,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:43,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:43,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:43,429 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 11 states. [2020-10-21 22:06:44,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:44,143 INFO L93 Difference]: Finished difference Result 29577 states and 113496 transitions. [2020-10-21 22:06:44,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:44,143 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 22:06:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:44,211 INFO L225 Difference]: With dead ends: 29577 [2020-10-21 22:06:44,211 INFO L226 Difference]: Without dead ends: 29557 [2020-10-21 22:06:44,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29557 states. [2020-10-21 22:06:44,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29557 to 9202. [2020-10-21 22:06:44,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9202 states. [2020-10-21 22:06:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9202 states to 9202 states and 41754 transitions. [2020-10-21 22:06:44,662 INFO L78 Accepts]: Start accepts. Automaton has 9202 states and 41754 transitions. Word has length 25 [2020-10-21 22:06:44,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:44,662 INFO L481 AbstractCegarLoop]: Abstraction has 9202 states and 41754 transitions. [2020-10-21 22:06:44,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:44,662 INFO L276 IsEmpty]: Start isEmpty. Operand 9202 states and 41754 transitions. [2020-10-21 22:06:44,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:44,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:44,665 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:44,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-21 22:06:44,866 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]=== [2020-10-21 22:06:44,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:44,867 INFO L82 PathProgramCache]: Analyzing trace with hash 855476835, now seen corresponding path program 1 times [2020-10-21 22:06:44,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:44,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614193894] [2020-10-21 22:06:44,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:44,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614193894] [2020-10-21 22:06:44,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905391367] [2020-10-21 22:06:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:45,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:45,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:45,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:45,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:45,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711883280] [2020-10-21 22:06:45,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:45,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:45,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:45,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:45,025 INFO L87 Difference]: Start difference. First operand 9202 states and 41754 transitions. Second operand 11 states. [2020-10-21 22:06:45,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:45,744 INFO L93 Difference]: Finished difference Result 29376 states and 112927 transitions. [2020-10-21 22:06:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:45,745 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 22:06:45,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:45,976 INFO L225 Difference]: With dead ends: 29376 [2020-10-21 22:06:45,976 INFO L226 Difference]: Without dead ends: 29356 [2020-10-21 22:06:45,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-21 22:06:46,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 9152. [2020-10-21 22:06:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9152 states. [2020-10-21 22:06:46,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9152 states to 9152 states and 41485 transitions. [2020-10-21 22:06:46,390 INFO L78 Accepts]: Start accepts. Automaton has 9152 states and 41485 transitions. Word has length 25 [2020-10-21 22:06:46,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:46,390 INFO L481 AbstractCegarLoop]: Abstraction has 9152 states and 41485 transitions. [2020-10-21 22:06:46,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:46,390 INFO L276 IsEmpty]: Start isEmpty. Operand 9152 states and 41485 transitions. [2020-10-21 22:06:46,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:46,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:46,394 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:46,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:46,595 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]=== [2020-10-21 22:06:46,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:46,595 INFO L82 PathProgramCache]: Analyzing trace with hash 874264633, now seen corresponding path program 4 times [2020-10-21 22:06:46,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:46,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102378296] [2020-10-21 22:06:46,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:46,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102378296] [2020-10-21 22:06:46,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422646141] [2020-10-21 22:06:46,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:06:46,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:06:46,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:46,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:46,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:46,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:46,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:46,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68268213] [2020-10-21 22:06:46,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:46,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:46,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:46,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:46,757 INFO L87 Difference]: Start difference. First operand 9152 states and 41485 transitions. Second operand 11 states. [2020-10-21 22:06:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:47,468 INFO L93 Difference]: Finished difference Result 28330 states and 108377 transitions. [2020-10-21 22:06:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:47,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 22:06:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:47,547 INFO L225 Difference]: With dead ends: 28330 [2020-10-21 22:06:47,547 INFO L226 Difference]: Without dead ends: 28308 [2020-10-21 22:06:47,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:47,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28308 states. [2020-10-21 22:06:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28308 to 8951. [2020-10-21 22:06:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8951 states. [2020-10-21 22:06:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 40581 transitions. [2020-10-21 22:06:47,998 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 40581 transitions. Word has length 25 [2020-10-21 22:06:47,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:47,998 INFO L481 AbstractCegarLoop]: Abstraction has 8951 states and 40581 transitions. [2020-10-21 22:06:47,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:47,998 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 40581 transitions. [2020-10-21 22:06:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:48,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:48,002 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:48,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:48,203 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]=== [2020-10-21 22:06:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:48,203 INFO L82 PathProgramCache]: Analyzing trace with hash 865386915, now seen corresponding path program 2 times [2020-10-21 22:06:48,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:48,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939370803] [2020-10-21 22:06:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:48,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939370803] [2020-10-21 22:06:48,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084940382] [2020-10-21 22:06:48,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:06:48,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:06:48,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:48,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:48,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:06:48,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:48,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:48,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999065352] [2020-10-21 22:06:48,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:48,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:48,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:48,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:48,369 INFO L87 Difference]: Start difference. First operand 8951 states and 40581 transitions. Second operand 11 states. [2020-10-21 22:06:49,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:49,083 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-10-21 22:06:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:49,084 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 22:06:49,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:49,155 INFO L225 Difference]: With dead ends: 28806 [2020-10-21 22:06:49,155 INFO L226 Difference]: Without dead ends: 28779 [2020-10-21 22:06:49,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:49,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-10-21 22:06:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-10-21 22:06:49,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-21 22:06:49,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40058 transitions. [2020-10-21 22:06:49,830 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40058 transitions. Word has length 25 [2020-10-21 22:06:49,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:49,831 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40058 transitions. [2020-10-21 22:06:49,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40058 transitions. [2020-10-21 22:06:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:49,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:49,835 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:50,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-10-21 22:06:50,036 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]=== [2020-10-21 22:06:50,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:50,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1242835239, now seen corresponding path program 3 times [2020-10-21 22:06:50,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:50,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830781941] [2020-10-21 22:06:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 22:06:50,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830781941] [2020-10-21 22:06:50,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977755402] [2020-10-21 22:06:50,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:06:50,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-21 22:06:50,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:50,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:50,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 22:06:50,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:50,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:50,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147021301] [2020-10-21 22:06:50,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:50,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:50,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:50,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:50,221 INFO L87 Difference]: Start difference. First operand 8841 states and 40058 transitions. Second operand 11 states. [2020-10-21 22:06:51,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:51,226 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-21 22:06:51,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:51,227 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 22:06:51,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:51,345 INFO L225 Difference]: With dead ends: 28636 [2020-10-21 22:06:51,346 INFO L226 Difference]: Without dead ends: 28616 [2020-10-21 22:06:51,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:51,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-21 22:06:51,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8710. [2020-10-21 22:06:51,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8710 states. [2020-10-21 22:06:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8710 states to 8710 states and 39454 transitions. [2020-10-21 22:06:51,942 INFO L78 Accepts]: Start accepts. Automaton has 8710 states and 39454 transitions. Word has length 25 [2020-10-21 22:06:51,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:51,942 INFO L481 AbstractCegarLoop]: Abstraction has 8710 states and 39454 transitions. [2020-10-21 22:06:51,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:51,942 INFO L276 IsEmpty]: Start isEmpty. Operand 8710 states and 39454 transitions. [2020-10-21 22:06:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:51,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:51,945 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:52,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:52,151 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]=== [2020-10-21 22:06:52,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:52,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1133114986, now seen corresponding path program 3 times [2020-10-21 22:06:52,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:52,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230232823] [2020-10-21 22:06:52,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 22:06:52,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230232823] [2020-10-21 22:06:52,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132720423] [2020-10-21 22:06:52,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:06:52,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-21 22:06:52,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:52,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:52,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 22:06:52,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:52,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:52,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685559150] [2020-10-21 22:06:52,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:52,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:52,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:52,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:52,326 INFO L87 Difference]: Start difference. First operand 8710 states and 39454 transitions. Second operand 11 states. [2020-10-21 22:06:53,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:53,018 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-21 22:06:53,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:53,018 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 22:06:53,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:53,079 INFO L225 Difference]: With dead ends: 28297 [2020-10-21 22:06:53,079 INFO L226 Difference]: Without dead ends: 28277 [2020-10-21 22:06:53,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:53,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-21 22:06:53,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8600. [2020-10-21 22:06:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8600 states. [2020-10-21 22:06:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8600 states to 8600 states and 38986 transitions. [2020-10-21 22:06:53,488 INFO L78 Accepts]: Start accepts. Automaton has 8600 states and 38986 transitions. Word has length 25 [2020-10-21 22:06:53,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:53,488 INFO L481 AbstractCegarLoop]: Abstraction has 8600 states and 38986 transitions. [2020-10-21 22:06:53,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 8600 states and 38986 transitions. [2020-10-21 22:06:53,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:53,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:53,491 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:53,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-10-21 22:06:53,692 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]=== [2020-10-21 22:06:53,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:53,692 INFO L82 PathProgramCache]: Analyzing trace with hash 152652457, now seen corresponding path program 4 times [2020-10-21 22:06:53,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:53,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557968009] [2020-10-21 22:06:53,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 22:06:53,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557968009] [2020-10-21 22:06:53,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145214873] [2020-10-21 22:06:53,743 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:53,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:06:53,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:53,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:53,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 22:06:53,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:53,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:53,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203587797] [2020-10-21 22:06:53,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:53,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:53,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:53,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:53,844 INFO L87 Difference]: Start difference. First operand 8600 states and 38986 transitions. Second operand 11 states. [2020-10-21 22:06:54,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:54,555 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-21 22:06:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:54,556 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 22:06:54,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:54,620 INFO L225 Difference]: With dead ends: 28565 [2020-10-21 22:06:54,620 INFO L226 Difference]: Without dead ends: 28538 [2020-10-21 22:06:54,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:54,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-21 22:06:55,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-21 22:06:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-21 22:06:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-21 22:06:55,218 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-21 22:06:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:55,218 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-21 22:06:55,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:55,218 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-21 22:06:55,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:55,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:55,221 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:55,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:06:55,422 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]=== [2020-10-21 22:06:55,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:55,423 INFO L82 PathProgramCache]: Analyzing trace with hash 152653170, now seen corresponding path program 4 times [2020-10-21 22:06:55,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:55,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28651886] [2020-10-21 22:06:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 22:06:55,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28651886] [2020-10-21 22:06:55,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599987986] [2020-10-21 22:06:55,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:06:55,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:06:55,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:06:55,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:06:55,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:06:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 22:06:55,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:06:55,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 22:06:55,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568644467] [2020-10-21 22:06:55,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:06:55,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:55,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:06:55,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:06:55,601 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 11 states. [2020-10-21 22:06:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:56,508 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-21 22:06:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:56,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 22:06:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:56,637 INFO L225 Difference]: With dead ends: 28213 [2020-10-21 22:06:56,638 INFO L226 Difference]: Without dead ends: 28186 [2020-10-21 22:06:56,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:06:56,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-21 22:06:57,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-21 22:06:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-21 22:06:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-21 22:06:57,548 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-21 22:06:57,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:57,548 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-21 22:06:57,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:06:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-21 22:06:57,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:57,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:57,555 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:57,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-10-21 22:06:57,769 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]=== [2020-10-21 22:06:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:57,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1307676527, now seen corresponding path program 5 times [2020-10-21 22:06:57,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:57,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900310827] [2020-10-21 22:06:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:06:57,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900310827] [2020-10-21 22:06:57,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:57,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:06:57,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508809252] [2020-10-21 22:06:57,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:57,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:57,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:57,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:57,827 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-10-21 22:06:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:58,485 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-10-21 22:06:58,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:58,485 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:06:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:58,556 INFO L225 Difference]: With dead ends: 28226 [2020-10-21 22:06:58,556 INFO L226 Difference]: Without dead ends: 28206 [2020-10-21 22:06:58,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:06:58,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-10-21 22:06:58,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-10-21 22:06:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-21 22:06:58,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-10-21 22:06:58,994 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-10-21 22:06:58,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:06:58,995 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-10-21 22:06:58,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:06:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-10-21 22:06:58,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:06:58,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:06:58,999 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:06:58,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-21 22:06:58,999 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]=== [2020-10-21 22:06:58,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:06:58,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1307667289, now seen corresponding path program 5 times [2020-10-21 22:06:58,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:06:58,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836363938] [2020-10-21 22:06:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:06:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:06:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:06:59,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836363938] [2020-10-21 22:06:59,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:06:59,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:06:59,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262874954] [2020-10-21 22:06:59,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:06:59,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:06:59,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:06:59,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:06:59,060 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-10-21 22:06:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:06:59,812 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-10-21 22:06:59,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:06:59,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:06:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:06:59,898 INFO L225 Difference]: With dead ends: 27801 [2020-10-21 22:06:59,898 INFO L226 Difference]: Without dead ends: 27781 [2020-10-21 22:06:59,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:07:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-10-21 22:07:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-10-21 22:07:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-10-21 22:07:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-10-21 22:07:00,349 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-10-21 22:07:00,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:00,350 INFO L481 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-10-21 22:07:00,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:07:00,350 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-10-21 22:07:00,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:07:00,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:00,353 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:00,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-21 22:07:00,353 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]=== [2020-10-21 22:07:00,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:00,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1308361007, now seen corresponding path program 6 times [2020-10-21 22:07:00,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:00,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120040966] [2020-10-21 22:07:00,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:07:00,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120040966] [2020-10-21 22:07:00,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:00,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:07:00,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892931550] [2020-10-21 22:07:00,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:07:00,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:00,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:07:00,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:07:00,422 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-10-21 22:07:01,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:01,138 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-10-21 22:07:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:07:01,139 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:07:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:01,203 INFO L225 Difference]: With dead ends: 27548 [2020-10-21 22:07:01,203 INFO L226 Difference]: Without dead ends: 27521 [2020-10-21 22:07:01,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:07:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-10-21 22:07:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-10-21 22:07:01,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-10-21 22:07:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-10-21 22:07:01,602 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-10-21 22:07:01,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:01,602 INFO L481 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-10-21 22:07:01,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:07:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-10-21 22:07:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:07:01,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:01,605 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:01,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-21 22:07:01,606 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]=== [2020-10-21 22:07:01,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:01,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1308352482, now seen corresponding path program 5 times [2020-10-21 22:07:01,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:01,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243761173] [2020-10-21 22:07:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:07:01,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243761173] [2020-10-21 22:07:01,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:01,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:07:01,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145372809] [2020-10-21 22:07:01,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:07:01,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:01,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:07:01,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:07:01,655 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-10-21 22:07:02,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:02,307 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-10-21 22:07:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:07:02,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:07:02,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:02,373 INFO L225 Difference]: With dead ends: 27167 [2020-10-21 22:07:02,373 INFO L226 Difference]: Without dead ends: 27147 [2020-10-21 22:07:02,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:07:02,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-10-21 22:07:02,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-10-21 22:07:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-10-21 22:07:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-10-21 22:07:02,769 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-10-21 22:07:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:02,769 INFO L481 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-10-21 22:07:02,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:07:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-10-21 22:07:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:07:02,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:02,772 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:02,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-21 22:07:02,772 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]=== [2020-10-21 22:07:02,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:02,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1299483289, now seen corresponding path program 6 times [2020-10-21 22:07:02,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:02,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368861947] [2020-10-21 22:07:02,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:07:02,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368861947] [2020-10-21 22:07:02,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:02,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:07:02,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627802809] [2020-10-21 22:07:02,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:07:02,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:02,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:07:02,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:07:02,823 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-10-21 22:07:03,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:03,501 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-10-21 22:07:03,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:07:03,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:07:03,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:03,562 INFO L225 Difference]: With dead ends: 26955 [2020-10-21 22:07:03,562 INFO L226 Difference]: Without dead ends: 26928 [2020-10-21 22:07:03,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:07:03,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-10-21 22:07:03,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-10-21 22:07:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-10-21 22:07:03,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-10-21 22:07:03,957 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-10-21 22:07:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:03,957 INFO L481 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-10-21 22:07:03,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:07:03,957 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-10-21 22:07:03,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:07:03,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:03,960 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:03,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-21 22:07:03,960 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]=== [2020-10-21 22:07:03,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:03,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1299484002, now seen corresponding path program 6 times [2020-10-21 22:07:03,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:03,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211454746] [2020-10-21 22:07:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:07:04,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211454746] [2020-10-21 22:07:04,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:04,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:07:04,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339310487] [2020-10-21 22:07:04,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:07:04,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:04,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:07:04,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:07:04,014 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-10-21 22:07:04,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:04,719 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-10-21 22:07:04,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:07:04,719 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:07:04,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:04,784 INFO L225 Difference]: With dead ends: 26632 [2020-10-21 22:07:04,784 INFO L226 Difference]: Without dead ends: 26605 [2020-10-21 22:07:04,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:07:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-10-21 22:07:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-10-21 22:07:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-10-21 22:07:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-10-21 22:07:05,357 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-10-21 22:07:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:05,357 INFO L481 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-10-21 22:07:05,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:07:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-10-21 22:07:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:07:05,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:05,360 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:05,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-21 22:07:05,361 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]=== [2020-10-21 22:07:05,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:05,361 INFO L82 PathProgramCache]: Analyzing trace with hash -717538963, now seen corresponding path program 1 times [2020-10-21 22:07:05,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:05,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027269704] [2020-10-21 22:07:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-21 22:07:05,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027269704] [2020-10-21 22:07:05,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:05,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:07:05,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088009394] [2020-10-21 22:07:05,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:07:05,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:05,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:07:05,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:07:05,383 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-10-21 22:07:05,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:05,519 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-10-21 22:07:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:07:05,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-21 22:07:05,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:05,551 INFO L225 Difference]: With dead ends: 11919 [2020-10-21 22:07:05,551 INFO L226 Difference]: Without dead ends: 11887 [2020-10-21 22:07:05,552 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 [2020-10-21 22:07:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-10-21 22:07:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-10-21 22:07:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-21 22:07:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-21 22:07:05,813 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-21 22:07:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:05,813 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-21 22:07:05,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:07:05,813 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-21 22:07:05,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-21 22:07:05,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:05,818 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:05,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-21 22:07:05,818 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]=== [2020-10-21 22:07:05,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:05,818 INFO L82 PathProgramCache]: Analyzing trace with hash -775462629, now seen corresponding path program 1 times [2020-10-21 22:07:05,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:05,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348323078] [2020-10-21 22:07:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:07:05,826 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:07:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:07:05,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:07:05,841 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:07:05,841 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:07:05,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-21 22:07:05,842 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:07:05,842 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-21 22:07:05,863 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,863 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,863 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,863 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,863 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,864 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,864 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,864 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,864 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,864 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,864 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,864 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,864 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,865 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,865 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,865 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,865 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,865 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,865 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,865 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,865 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,866 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,866 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,866 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,866 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,866 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,866 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,866 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,866 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,867 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,867 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,867 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,867 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,867 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,867 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,867 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,867 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,868 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,868 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,868 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,868 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,868 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,868 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,868 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,868 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,869 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,869 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,869 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,869 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,869 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,869 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,869 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,870 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,870 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,870 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,870 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,870 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,870 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,870 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,871 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,871 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,871 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,872 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,872 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,872 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,872 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,873 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,873 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,873 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,873 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,873 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,873 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,873 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,873 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,874 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,874 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,891 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,892 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,892 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,892 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,892 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,893 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,893 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,895 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,895 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,896 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,897 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,897 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,897 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,897 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,897 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,898 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,898 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,898 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,898 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,898 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,899 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,899 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,899 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,899 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,900 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:07:05,903 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:07:05,903 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-21 22:07:05,904 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:07:05,904 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:07:05,904 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:07:05,904 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:07:05,904 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:07:05,904 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:07:05,904 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:07:05,904 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:07:05,906 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:07:05,906 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 175 transitions, 470 flow [2020-10-21 22:07:05,906 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 175 transitions, 470 flow [2020-10-21 22:07:05,906 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 188 places, 175 transitions, 470 flow [2020-10-21 22:07:05,929 INFO L129 PetriNetUnfolder]: 9/180 cut-off events. [2020-10-21 22:07:05,930 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-21 22:07:05,931 INFO L80 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 180 events. 9/180 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 323 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 215. Up to 14 conditions per place. [2020-10-21 22:07:05,939 INFO L116 LiptonReduction]: Number of co-enabled transitions 4212 [2020-10-21 22:07:07,836 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-21 22:07:08,668 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-21 22:07:08,783 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 22:07:08,851 INFO L131 LiptonReduction]: Checked pairs total: 6134 [2020-10-21 22:07:08,852 INFO L133 LiptonReduction]: Total number of compositions: 193 [2020-10-21 22:07:08,852 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-21 22:07:10,298 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-21 22:07:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-21 22:07:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 22:07:10,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:10,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 22:07:10,298 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:10,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:10,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1673091, now seen corresponding path program 1 times [2020-10-21 22:07:10,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:10,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003852483] [2020-10-21 22:07:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:07:10,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003852483] [2020-10-21 22:07:10,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:10,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:07:10,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348722090] [2020-10-21 22:07:10,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:07:10,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:10,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:07:10,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:07:10,309 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-21 22:07:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:10,455 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-21 22:07:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:07:10,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 22:07:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:10,513 INFO L225 Difference]: With dead ends: 17885 [2020-10-21 22:07:10,513 INFO L226 Difference]: Without dead ends: 16791 [2020-10-21 22:07:10,513 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 [2020-10-21 22:07:10,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-21 22:07:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-21 22:07:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-21 22:07:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-21 22:07:11,530 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-21 22:07:11,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:11,530 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-21 22:07:11,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:07:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-21 22:07:11,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:07:11,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:11,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:11,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-21 22:07:11,531 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:11,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1275789991, now seen corresponding path program 1 times [2020-10-21 22:07:11,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:11,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908054607] [2020-10-21 22:07:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:07:11,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908054607] [2020-10-21 22:07:11,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:11,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:07:11,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793455038] [2020-10-21 22:07:11,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:07:11,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:11,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:07:11,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:07:11,549 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-21 22:07:11,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:11,792 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-21 22:07:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:07:11,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 22:07:11,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:11,903 INFO L225 Difference]: With dead ends: 30985 [2020-10-21 22:07:11,903 INFO L226 Difference]: Without dead ends: 30977 [2020-10-21 22:07:11,904 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 [2020-10-21 22:07:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-21 22:07:12,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-21 22:07:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-21 22:07:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-21 22:07:12,907 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-21 22:07:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:12,907 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-21 22:07:12,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:07:12,908 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-21 22:07:12,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:07:12,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:12,908 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:12,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-21 22:07:12,908 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:12,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1409436270, now seen corresponding path program 1 times [2020-10-21 22:07:12,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:12,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494978876] [2020-10-21 22:07:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:07:12,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494978876] [2020-10-21 22:07:12,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:12,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:07:12,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322751839] [2020-10-21 22:07:12,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:07:12,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:12,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:07:12,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:07:12,940 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-21 22:07:13,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:13,207 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-21 22:07:13,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:07:13,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 22:07:13,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:13,320 INFO L225 Difference]: With dead ends: 36296 [2020-10-21 22:07:13,321 INFO L226 Difference]: Without dead ends: 36280 [2020-10-21 22:07:13,321 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 [2020-10-21 22:07:13,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-21 22:07:14,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-21 22:07:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-21 22:07:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-21 22:07:14,485 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-21 22:07:14,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:14,485 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-21 22:07:14,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:07:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-21 22:07:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:07:14,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:14,486 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:14,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-21 22:07:14,486 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:14,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:14,487 INFO L82 PathProgramCache]: Analyzing trace with hash 431937222, now seen corresponding path program 1 times [2020-10-21 22:07:14,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:14,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924811489] [2020-10-21 22:07:14,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:07:14,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924811489] [2020-10-21 22:07:14,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604261125] [2020-10-21 22:07:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:07:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:14,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:07:14,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:07:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:07:14,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:07:14,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-21 22:07:14,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992602265] [2020-10-21 22:07:14,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:07:14,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:14,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:07:14,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:07:14,619 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 7 states. [2020-10-21 22:07:16,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:16,802 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-21 22:07:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:07:16,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 22:07:16,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:16,984 INFO L225 Difference]: With dead ends: 56720 [2020-10-21 22:07:16,984 INFO L226 Difference]: Without dead ends: 56704 [2020-10-21 22:07:16,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:07:17,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-21 22:07:18,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-21 22:07:18,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-21 22:07:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-21 22:07:18,373 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-21 22:07:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:18,373 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-21 22:07:18,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:07:18,373 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-21 22:07:18,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:07:18,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:18,374 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:18,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:07:18,574 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:18,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:18,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1553563130, now seen corresponding path program 2 times [2020-10-21 22:07:18,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:18,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656092135] [2020-10-21 22:07:18,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:07:18,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656092135] [2020-10-21 22:07:18,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:18,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:07:18,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588298190] [2020-10-21 22:07:18,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:07:18,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:18,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:07:18,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:07:18,609 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-21 22:07:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:19,146 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-21 22:07:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:07:19,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 22:07:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:19,362 INFO L225 Difference]: With dead ends: 58078 [2020-10-21 22:07:19,362 INFO L226 Difference]: Without dead ends: 58061 [2020-10-21 22:07:19,362 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 [2020-10-21 22:07:20,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-21 22:07:23,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-21 22:07:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-21 22:07:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-21 22:07:23,210 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-21 22:07:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:23,210 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-21 22:07:23,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:07:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-21 22:07:23,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:07:23,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:23,211 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:23,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-21 22:07:23,211 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:23,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:23,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1071943576, now seen corresponding path program 1 times [2020-10-21 22:07:23,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:23,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894353928] [2020-10-21 22:07:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:07:23,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894353928] [2020-10-21 22:07:23,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:23,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:07:23,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067626978] [2020-10-21 22:07:23,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:07:23,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:23,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:07:23,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:07:23,231 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-21 22:07:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:23,549 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-21 22:07:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:07:23,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 22:07:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:23,686 INFO L225 Difference]: With dead ends: 41885 [2020-10-21 22:07:23,687 INFO L226 Difference]: Without dead ends: 41856 [2020-10-21 22:07:23,687 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 [2020-10-21 22:07:24,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-21 22:07:24,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-21 22:07:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-21 22:07:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-21 22:07:25,093 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-21 22:07:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:25,093 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-21 22:07:25,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:07:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-21 22:07:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:07:25,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:25,094 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:25,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-21 22:07:25,094 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:25,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:25,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1190529332, now seen corresponding path program 1 times [2020-10-21 22:07:25,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:25,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686934660] [2020-10-21 22:07:25,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:07:25,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686934660] [2020-10-21 22:07:25,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772933632] [2020-10-21 22:07:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:07:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:25,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:07:25,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:07:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:07:25,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:07:25,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-21 22:07:25,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948729513] [2020-10-21 22:07:25,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:07:25,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:25,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:07:25,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:07:25,223 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 7 states. [2020-10-21 22:07:25,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:25,798 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-21 22:07:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:07:25,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:07:25,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:25,999 INFO L225 Difference]: With dead ends: 66831 [2020-10-21 22:07:25,999 INFO L226 Difference]: Without dead ends: 66807 [2020-10-21 22:07:26,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:07:26,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-21 22:07:28,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-21 22:07:28,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-21 22:07:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-21 22:07:28,395 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-21 22:07:28,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:28,395 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-21 22:07:28,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:07:28,396 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-21 22:07:28,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:07:28,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:28,396 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:28,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:07:28,610 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:28,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:28,610 INFO L82 PathProgramCache]: Analyzing trace with hash -524480060, now seen corresponding path program 1 times [2020-10-21 22:07:28,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:28,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363964210] [2020-10-21 22:07:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:07:28,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363964210] [2020-10-21 22:07:28,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661087442] [2020-10-21 22:07:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:07:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:28,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:07:28,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:07:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:07:28,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:07:28,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-21 22:07:28,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261975398] [2020-10-21 22:07:28,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:07:28,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:28,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:07:28,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:07:28,742 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 7 states. [2020-10-21 22:07:29,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:29,380 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-21 22:07:29,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:07:29,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:07:29,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:29,677 INFO L225 Difference]: With dead ends: 69484 [2020-10-21 22:07:29,677 INFO L226 Difference]: Without dead ends: 69451 [2020-10-21 22:07:29,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:07:30,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-21 22:07:31,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-21 22:07:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-21 22:07:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-21 22:07:31,412 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-21 22:07:31,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:31,412 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-21 22:07:31,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:07:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-21 22:07:31,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:07:31,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:31,414 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:31,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:07:31,614 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:31,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:31,615 INFO L82 PathProgramCache]: Analyzing trace with hash -654401980, now seen corresponding path program 2 times [2020-10-21 22:07:31,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:31,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569571043] [2020-10-21 22:07:31,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:07:31,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569571043] [2020-10-21 22:07:31,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:31,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:07:31,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128982369] [2020-10-21 22:07:31,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:07:31,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:31,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:07:31,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:07:31,652 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-21 22:07:34,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:34,349 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-21 22:07:34,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:07:34,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:07:34,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:34,617 INFO L225 Difference]: With dead ends: 70510 [2020-10-21 22:07:34,617 INFO L226 Difference]: Without dead ends: 70477 [2020-10-21 22:07:34,618 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 [2020-10-21 22:07:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-21 22:07:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-21 22:07:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-21 22:07:36,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-21 22:07:36,385 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-21 22:07:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:36,385 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-21 22:07:36,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:07:36,385 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-21 22:07:36,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:07:36,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:36,386 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:36,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-21 22:07:36,387 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:36,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:36,387 INFO L82 PathProgramCache]: Analyzing trace with hash -654380404, now seen corresponding path program 2 times [2020-10-21 22:07:36,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:36,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992201239] [2020-10-21 22:07:36,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:07:36,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992201239] [2020-10-21 22:07:36,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:36,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:07:36,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60961430] [2020-10-21 22:07:36,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:07:36,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:36,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:07:36,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:07:36,427 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-21 22:07:37,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:37,023 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-21 22:07:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:07:37,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:07:37,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:37,276 INFO L225 Difference]: With dead ends: 70096 [2020-10-21 22:07:37,277 INFO L226 Difference]: Without dead ends: 70063 [2020-10-21 22:07:37,277 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 [2020-10-21 22:07:38,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-21 22:07:39,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-21 22:07:39,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-21 22:07:39,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-21 22:07:39,832 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-21 22:07:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:39,832 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-21 22:07:39,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:07:39,833 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-21 22:07:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:07:39,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:39,834 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:39,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-21 22:07:39,834 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:39,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1507492872, now seen corresponding path program 1 times [2020-10-21 22:07:39,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:39,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053314919] [2020-10-21 22:07:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:07:39,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053314919] [2020-10-21 22:07:39,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952518627] [2020-10-21 22:07:39,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:07:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:39,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:07:39,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:07:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:07:39,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:07:39,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:07:39,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954101543] [2020-10-21 22:07:39,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:07:39,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:39,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:07:39,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:07:39,984 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 9 states. [2020-10-21 22:07:41,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:41,098 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-21 22:07:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:07:41,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:07:41,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:41,424 INFO L225 Difference]: With dead ends: 100731 [2020-10-21 22:07:41,425 INFO L226 Difference]: Without dead ends: 100715 [2020-10-21 22:07:41,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:07:42,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-21 22:07:44,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-21 22:07:44,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-21 22:07:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-21 22:07:44,598 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-21 22:07:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:44,598 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-21 22:07:44,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:07:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-21 22:07:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:07:44,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:44,599 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:44,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:07:44,800 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:44,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:44,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1637414792, now seen corresponding path program 2 times [2020-10-21 22:07:44,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:44,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593920888] [2020-10-21 22:07:44,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:07:44,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593920888] [2020-10-21 22:07:44,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617526918] [2020-10-21 22:07:44,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:07:44,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:07:44,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:07:44,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:07:44,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:07:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:07:44,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:07:44,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:07:44,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955064682] [2020-10-21 22:07:44,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:07:44,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:44,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:07:44,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:07:44,951 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 9 states. [2020-10-21 22:07:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:46,066 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-21 22:07:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:07:46,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:07:46,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:46,381 INFO L225 Difference]: With dead ends: 99876 [2020-10-21 22:07:46,382 INFO L226 Difference]: Without dead ends: 99855 [2020-10-21 22:07:46,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:07:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-21 22:07:49,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-21 22:07:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-21 22:07:49,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-21 22:07:49,410 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-21 22:07:49,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:49,410 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-21 22:07:49,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:07:49,410 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-21 22:07:49,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:07:49,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:49,411 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:49,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-21 22:07:49,612 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:49,613 INFO L82 PathProgramCache]: Analyzing trace with hash 430946104, now seen corresponding path program 3 times [2020-10-21 22:07:49,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:49,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000021878] [2020-10-21 22:07:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:07:49,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000021878] [2020-10-21 22:07:49,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850594118] [2020-10-21 22:07:49,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:07:49,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 22:07:49,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:07:49,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:07:49,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:07:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:07:49,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:07:49,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:07:49,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208963098] [2020-10-21 22:07:49,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:07:49,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:49,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:07:49,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:07:49,769 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 9 states. [2020-10-21 22:07:50,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:50,903 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-21 22:07:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:07:50,904 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:07:50,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:51,207 INFO L225 Difference]: With dead ends: 100071 [2020-10-21 22:07:51,207 INFO L226 Difference]: Without dead ends: 100055 [2020-10-21 22:07:51,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:07:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-21 22:07:54,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-21 22:07:54,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-21 22:07:54,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-21 22:07:54,106 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-21 22:07:54,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:54,106 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-21 22:07:54,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:07:54,106 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-21 22:07:54,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:07:54,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:54,107 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:54,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:07:54,308 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:54,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:54,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1514169928, now seen corresponding path program 4 times [2020-10-21 22:07:54,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:54,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094692444] [2020-10-21 22:07:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:07:54,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094692444] [2020-10-21 22:07:54,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474321573] [2020-10-21 22:07:54,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:07:54,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:07:54,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:07:54,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:07:54,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:07:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:07:54,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:07:54,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:07:54,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473780258] [2020-10-21 22:07:54,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:07:54,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:54,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:07:54,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:07:54,460 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 9 states. [2020-10-21 22:07:55,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:07:55,574 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-21 22:07:55,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:07:55,575 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:07:55,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:07:55,881 INFO L225 Difference]: With dead ends: 99523 [2020-10-21 22:07:55,881 INFO L226 Difference]: Without dead ends: 99502 [2020-10-21 22:07:55,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:07:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-21 22:07:58,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-21 22:07:58,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-21 22:07:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-21 22:07:58,768 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-21 22:07:58,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:07:58,769 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-21 22:07:58,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:07:58,769 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-21 22:07:58,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:07:58,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:07:58,770 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:07:58,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-21 22:07:58,971 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:07:58,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:07:58,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1815083464, now seen corresponding path program 5 times [2020-10-21 22:07:58,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:07:58,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356250794] [2020-10-21 22:07:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:07:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:07:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:07:59,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356250794] [2020-10-21 22:07:59,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:07:59,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:07:59,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894219598] [2020-10-21 22:07:59,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:07:59,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:07:59,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:07:59,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:07:59,020 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-10-21 22:08:00,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:00,178 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-10-21 22:08:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:08:00,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:08:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:00,527 INFO L225 Difference]: With dead ends: 99710 [2020-10-21 22:08:00,527 INFO L226 Difference]: Without dead ends: 99694 [2020-10-21 22:08:00,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:08:01,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-10-21 22:08:05,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-10-21 22:08:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-10-21 22:08:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-10-21 22:08:05,365 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-10-21 22:08:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:08:05,366 INFO L481 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-10-21 22:08:05,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:08:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-10-21 22:08:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:08:05,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:08:05,367 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:08:05,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-21 22:08:05,367 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:08:05,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:08:05,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1794370504, now seen corresponding path program 6 times [2020-10-21 22:08:05,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:08:05,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313792765] [2020-10-21 22:08:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:08:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:08:05,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313792765] [2020-10-21 22:08:05,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:08:05,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:08:05,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651168200] [2020-10-21 22:08:05,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:08:05,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:08:05,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:08:05,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:08:05,422 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-10-21 22:08:06,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:06,557 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-10-21 22:08:06,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:08:06,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:08:06,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:06,882 INFO L225 Difference]: With dead ends: 98863 [2020-10-21 22:08:06,882 INFO L226 Difference]: Without dead ends: 98841 [2020-10-21 22:08:06,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:08:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-10-21 22:08:09,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-10-21 22:08:09,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-10-21 22:08:09,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-10-21 22:08:09,698 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-10-21 22:08:09,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:08:09,698 INFO L481 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-10-21 22:08:09,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:08:09,699 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-10-21 22:08:09,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:08:09,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:08:09,700 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:08:09,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-21 22:08:09,700 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:08:09,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:08:09,700 INFO L82 PathProgramCache]: Analyzing trace with hash -849037537, now seen corresponding path program 1 times [2020-10-21 22:08:09,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:08:09,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577187253] [2020-10-21 22:08:09,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:08:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:08:09,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577187253] [2020-10-21 22:08:09,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:08:09,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:08:09,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181616884] [2020-10-21 22:08:09,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:08:09,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:08:09,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:08:09,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:08:09,729 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-10-21 22:08:10,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:10,070 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-10-21 22:08:10,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:08:10,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 22:08:10,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:10,233 INFO L225 Difference]: With dead ends: 46463 [2020-10-21 22:08:10,233 INFO L226 Difference]: Without dead ends: 46417 [2020-10-21 22:08:10,234 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 [2020-10-21 22:08:10,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-10-21 22:08:11,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-10-21 22:08:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-21 22:08:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-21 22:08:11,717 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-21 22:08:11,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:08:11,717 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-21 22:08:11,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:08:11,717 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-21 22:08:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:08:11,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:08:11,719 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:08:11,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-21 22:08:11,719 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:08:11,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:08:11,719 INFO L82 PathProgramCache]: Analyzing trace with hash -631544749, now seen corresponding path program 1 times [2020-10-21 22:08:11,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:08:11,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202986054] [2020-10-21 22:08:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:08:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 22:08:11,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202986054] [2020-10-21 22:08:11,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950656401] [2020-10-21 22:08:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:08:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:11,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:08:11,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:08:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 22:08:11,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:08:11,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-21 22:08:11,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843191385] [2020-10-21 22:08:11,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:08:11,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:08:11,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:08:11,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:08:11,856 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 7 states. [2020-10-21 22:08:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:12,982 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-21 22:08:12,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:08:12,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:08:12,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:13,252 INFO L225 Difference]: With dead ends: 75380 [2020-10-21 22:08:13,252 INFO L226 Difference]: Without dead ends: 75344 [2020-10-21 22:08:13,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:08:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-21 22:08:15,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-21 22:08:15,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-21 22:08:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-21 22:08:15,166 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-21 22:08:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:08:15,166 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-21 22:08:15,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:08:15,166 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-21 22:08:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:08:15,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:08:15,168 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:08:15,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:08:15,369 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:08:15,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:08:15,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1821918027, now seen corresponding path program 1 times [2020-10-21 22:08:15,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:08:15,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352278675] [2020-10-21 22:08:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:08:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:08:15,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352278675] [2020-10-21 22:08:15,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512078574] [2020-10-21 22:08:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:08:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:15,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:08:15,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:08:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:08:15,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:08:15,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-21 22:08:15,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046561146] [2020-10-21 22:08:15,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:08:15,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:08:15,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:08:15,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:08:15,511 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 7 states. [2020-10-21 22:08:16,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:16,489 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-21 22:08:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:08:16,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:08:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:16,747 INFO L225 Difference]: With dead ends: 79487 [2020-10-21 22:08:16,747 INFO L226 Difference]: Without dead ends: 79445 [2020-10-21 22:08:16,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:08:17,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-21 22:08:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-21 22:08:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-21 22:08:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-21 22:08:18,746 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-21 22:08:18,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:08:18,746 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-21 22:08:18,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:08:18,747 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-21 22:08:18,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:08:18,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:08:18,749 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:08:18,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:08:18,951 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:08:18,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:08:18,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1140939329, now seen corresponding path program 1 times [2020-10-21 22:08:18,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:08:18,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092417394] [2020-10-21 22:08:18,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:08:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:08:18,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092417394] [2020-10-21 22:08:18,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303547014] [2020-10-21 22:08:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:08:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:19,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:08:19,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:08:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:08:19,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:08:19,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-21 22:08:19,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441156202] [2020-10-21 22:08:19,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:08:19,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:08:19,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:08:19,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:08:19,081 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 7 states. [2020-10-21 22:08:20,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:20,220 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-21 22:08:20,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:08:20,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:08:20,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:20,538 INFO L225 Difference]: With dead ends: 82728 [2020-10-21 22:08:20,538 INFO L226 Difference]: Without dead ends: 82673 [2020-10-21 22:08:20,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:08:21,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-21 22:08:22,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-21 22:08:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-21 22:08:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-21 22:08:22,529 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-21 22:08:22,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:08:22,530 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-21 22:08:22,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:08:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-21 22:08:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:08:22,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:08:22,532 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:08:22,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2020-10-21 22:08:22,733 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:08:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:08:22,733 INFO L82 PathProgramCache]: Analyzing trace with hash 118685707, now seen corresponding path program 2 times [2020-10-21 22:08:22,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:08:22,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092792375] [2020-10-21 22:08:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:08:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:08:22,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092792375] [2020-10-21 22:08:22,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:08:22,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:08:22,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208212550] [2020-10-21 22:08:22,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:08:22,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:08:22,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:08:22,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:08:22,768 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-21 22:08:23,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:23,991 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-10-21 22:08:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:08:23,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:08:23,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:24,261 INFO L225 Difference]: With dead ends: 83507 [2020-10-21 22:08:24,261 INFO L226 Difference]: Without dead ends: 83452 [2020-10-21 22:08:24,261 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 [2020-10-21 22:08:25,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-10-21 22:08:26,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-10-21 22:08:26,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-21 22:08:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-21 22:08:26,274 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-21 22:08:26,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:08:26,274 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-21 22:08:26,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:08:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-21 22:08:26,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:08:26,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:08:26,277 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:08:26,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-21 22:08:26,277 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:08:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:08:26,277 INFO L82 PathProgramCache]: Analyzing trace with hash 118707283, now seen corresponding path program 2 times [2020-10-21 22:08:26,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:08:26,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025806911] [2020-10-21 22:08:26,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:08:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:08:26,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025806911] [2020-10-21 22:08:26,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:08:26,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:08:26,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510886249] [2020-10-21 22:08:26,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:08:26,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:08:26,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:08:26,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:08:26,310 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-21 22:08:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:26,999 INFO L93 Difference]: Finished difference Result 83543 states and 402494 transitions. [2020-10-21 22:08:26,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:08:26,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:08:27,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:27,902 INFO L225 Difference]: With dead ends: 83543 [2020-10-21 22:08:27,902 INFO L226 Difference]: Without dead ends: 83488 [2020-10-21 22:08:27,902 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 [2020-10-21 22:08:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83488 states. [2020-10-21 22:08:29,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83488 to 36306. [2020-10-21 22:08:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-21 22:08:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-21 22:08:30,009 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-21 22:08:30,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:08:30,009 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-21 22:08:30,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:08:30,009 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-21 22:08:30,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:08:30,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:08:30,011 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:08:30,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-21 22:08:30,012 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:08:30,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:08:30,012 INFO L82 PathProgramCache]: Analyzing trace with hash 118697983, now seen corresponding path program 2 times [2020-10-21 22:08:30,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:08:30,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21111079] [2020-10-21 22:08:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:08:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:08:30,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21111079] [2020-10-21 22:08:30,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:08:30,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:08:30,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086543089] [2020-10-21 22:08:30,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:08:30,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:08:30,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:08:30,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:08:30,051 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-21 22:08:30,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:30,720 INFO L93 Difference]: Finished difference Result 83898 states and 404104 transitions. [2020-10-21 22:08:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:08:30,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:08:30,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:31,022 INFO L225 Difference]: With dead ends: 83898 [2020-10-21 22:08:31,022 INFO L226 Difference]: Without dead ends: 83843 [2020-10-21 22:08:31,022 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 [2020-10-21 22:08:32,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83843 states. [2020-10-21 22:08:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83843 to 37062. [2020-10-21 22:08:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-21 22:08:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-21 22:08:33,641 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-21 22:08:33,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:08:33,641 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-21 22:08:33,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:08:33,641 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-21 22:08:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:08:33,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:08:33,644 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:08:33,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-21 22:08:33,644 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:08:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:08:33,645 INFO L82 PathProgramCache]: Analyzing trace with hash 379089791, now seen corresponding path program 1 times [2020-10-21 22:08:33,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:08:33,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56784733] [2020-10-21 22:08:33,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:08:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:08:33,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56784733] [2020-10-21 22:08:33,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310632574] [2020-10-21 22:08:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:08:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:33,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:08:33,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:08:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:08:33,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:08:33,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:08:33,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244161162] [2020-10-21 22:08:33,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:08:33,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:08:33,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:08:33,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:08:33,804 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 9 states. [2020-10-21 22:08:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:35,123 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-21 22:08:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:08:35,124 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:08:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:36,269 INFO L225 Difference]: With dead ends: 122892 [2020-10-21 22:08:36,269 INFO L226 Difference]: Without dead ends: 122862 [2020-10-21 22:08:36,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:08:37,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-21 22:08:38,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-21 22:08:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-21 22:08:38,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-21 22:08:38,972 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-21 22:08:38,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:08:38,972 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-21 22:08:38,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:08:38,973 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-21 22:08:38,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:08:38,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:08:38,976 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:08:39,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:08:39,191 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:08:39,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:08:39,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1711199731, now seen corresponding path program 1 times [2020-10-21 22:08:39,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:08:39,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280787799] [2020-10-21 22:08:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:08:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:08:39,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280787799] [2020-10-21 22:08:39,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600765209] [2020-10-21 22:08:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:08:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:39,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:08:39,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:08:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:08:39,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:08:39,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:08:39,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019872594] [2020-10-21 22:08:39,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:08:39,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:08:39,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:08:39,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:08:39,348 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 9 states. [2020-10-21 22:08:40,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:40,993 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-21 22:08:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:08:40,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:08:40,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:41,380 INFO L225 Difference]: With dead ends: 121590 [2020-10-21 22:08:41,380 INFO L226 Difference]: Without dead ends: 121560 [2020-10-21 22:08:41,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:08:42,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-21 22:08:47,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-21 22:08:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-21 22:08:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-21 22:08:47,320 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-21 22:08:47,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:08:47,320 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-21 22:08:47,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:08:47,320 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-21 22:08:47,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:08:47,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:08:47,324 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:08:47,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2020-10-21 22:08:47,532 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:08:47,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:08:47,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1324142529, now seen corresponding path program 2 times [2020-10-21 22:08:47,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:08:47,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533341186] [2020-10-21 22:08:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:08:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 22:08:47,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533341186] [2020-10-21 22:08:47,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855341083] [2020-10-21 22:08:47,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:08:47,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:08:47,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:08:47,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:08:47,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:08:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 22:08:47,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:08:47,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:08:47,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601764716] [2020-10-21 22:08:47,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:08:47,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:08:47,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:08:47,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:08:47,684 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 9 states. [2020-10-21 22:08:48,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:48,881 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-21 22:08:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:08:48,881 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:08:48,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:49,245 INFO L225 Difference]: With dead ends: 120395 [2020-10-21 22:08:49,245 INFO L226 Difference]: Without dead ends: 120362 [2020-10-21 22:08:49,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:08:50,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-21 22:08:52,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-21 22:08:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-21 22:08:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-21 22:08:52,754 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-21 22:08:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:08:52,754 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-21 22:08:52,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:08:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-21 22:08:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:08:52,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:08:52,756 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:08:52,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:08:52,957 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:08:52,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:08:52,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1324130253, now seen corresponding path program 2 times [2020-10-21 22:08:52,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:08:52,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633379320] [2020-10-21 22:08:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:08:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:08:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 22:08:53,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633379320] [2020-10-21 22:08:53,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869410491] [2020-10-21 22:08:53,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:08:53,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:08:53,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:08:53,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:08:53,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:08:53,108 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 22:08:53,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:08:53,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:08:53,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246679851] [2020-10-21 22:08:53,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:08:53,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:08:53,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:08:53,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:08:53,109 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 9 states. [2020-10-21 22:08:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:08:54,381 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-10-21 22:08:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:08:54,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:08:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:08:54,782 INFO L225 Difference]: With dead ends: 119346 [2020-10-21 22:08:54,782 INFO L226 Difference]: Without dead ends: 119313 [2020-10-21 22:08:54,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:08:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-10-21 22:09:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-10-21 22:09:00,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-21 22:09:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-21 22:09:00,322 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-21 22:09:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:09:00,322 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-21 22:09:00,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:09:00,323 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-21 22:09:00,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:09:00,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:09:00,325 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:09:00,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-21 22:09:00,532 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:09:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:09:00,532 INFO L82 PathProgramCache]: Analyzing trace with hash -132968769, now seen corresponding path program 3 times [2020-10-21 22:09:00,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:09:00,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351752852] [2020-10-21 22:09:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:09:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:09:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:09:00,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351752852] [2020-10-21 22:09:00,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361116571] [2020-10-21 22:09:00,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:09:00,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-21 22:09:00,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:09:00,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:09:00,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:09:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:09:00,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:09:00,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:09:00,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194289474] [2020-10-21 22:09:00,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:09:00,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:09:00,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:09:00,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:09:00,696 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 9 states. [2020-10-21 22:09:02,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:09:02,528 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-10-21 22:09:02,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:09:02,528 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:09:02,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:09:02,940 INFO L225 Difference]: With dead ends: 119770 [2020-10-21 22:09:02,940 INFO L226 Difference]: Without dead ends: 119740 [2020-10-21 22:09:02,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:09:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-10-21 22:09:09,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-10-21 22:09:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-10-21 22:09:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-10-21 22:09:09,191 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-10-21 22:09:09,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:09:09,191 INFO L481 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-10-21 22:09:09,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:09:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-10-21 22:09:09,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:09:09,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:09:09,193 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:09:09,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-21 22:09:09,400 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:09:09,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:09:09,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1551881963, now seen corresponding path program 1 times [2020-10-21 22:09:09,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:09:09,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176350196] [2020-10-21 22:09:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:09:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:09:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:09:09,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176350196] [2020-10-21 22:09:09,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131980459] [2020-10-21 22:09:09,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:09:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:09:09,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:09:09,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:09:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:09:09,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:09:09,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:09:09,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103305321] [2020-10-21 22:09:09,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:09:09,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:09:09,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:09:09,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:09:09,549 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 9 states. [2020-10-21 22:09:10,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:09:10,770 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-10-21 22:09:10,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:09:10,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:09:10,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:09:11,168 INFO L225 Difference]: With dead ends: 121131 [2020-10-21 22:09:11,168 INFO L226 Difference]: Without dead ends: 121101 [2020-10-21 22:09:11,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:09:12,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-10-21 22:09:14,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-10-21 22:09:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-10-21 22:09:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-10-21 22:09:14,493 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-10-21 22:09:14,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:09:14,494 INFO L481 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-10-21 22:09:14,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:09:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-10-21 22:09:14,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:09:14,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:09:14,496 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:09:14,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-21 22:09:14,697 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:09:14,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:09:14,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1483438721, now seen corresponding path program 4 times [2020-10-21 22:09:14,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:09:14,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011899805] [2020-10-21 22:09:14,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:09:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:09:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:09:14,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011899805] [2020-10-21 22:09:14,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856828966] [2020-10-21 22:09:14,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:09:14,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:09:14,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:09:14,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:09:14,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:09:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:09:14,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:09:14,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:09:14,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760921067] [2020-10-21 22:09:14,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:09:14,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:09:14,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:09:14,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:09:14,851 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 9 states. [2020-10-21 22:09:16,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:09:16,056 INFO L93 Difference]: Finished difference Result 119615 states and 544863 transitions. [2020-10-21 22:09:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:09:16,057 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:09:16,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:09:16,477 INFO L225 Difference]: With dead ends: 119615 [2020-10-21 22:09:16,477 INFO L226 Difference]: Without dead ends: 119582 [2020-10-21 22:09:16,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:09:18,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119582 states. [2020-10-21 22:09:19,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119582 to 35305. [2020-10-21 22:09:19,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35305 states. [2020-10-21 22:09:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35305 states to 35305 states and 188015 transitions. [2020-10-21 22:09:19,917 INFO L78 Accepts]: Start accepts. Automaton has 35305 states and 188015 transitions. Word has length 25 [2020-10-21 22:09:19,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:09:19,917 INFO L481 AbstractCegarLoop]: Abstraction has 35305 states and 188015 transitions. [2020-10-21 22:09:19,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:09:19,917 INFO L276 IsEmpty]: Start isEmpty. Operand 35305 states and 188015 transitions. [2020-10-21 22:09:19,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:09:19,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:09:19,920 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:09:20,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2020-10-21 22:09:20,121 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:09:20,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:09:20,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1483448021, now seen corresponding path program 2 times [2020-10-21 22:09:20,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:09:20,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455115259] [2020-10-21 22:09:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:09:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:09:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:09:20,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455115259] [2020-10-21 22:09:20,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025999445] [2020-10-21 22:09:20,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:09:20,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:09:20,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:09:20,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:09:20,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:09:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:09:20,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:09:20,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:09:20,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776682257] [2020-10-21 22:09:20,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:09:20,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:09:20,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:09:20,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:09:20,278 INFO L87 Difference]: Start difference. First operand 35305 states and 188015 transitions. Second operand 9 states. [2020-10-21 22:09:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:09:22,134 INFO L93 Difference]: Finished difference Result 119145 states and 543472 transitions. [2020-10-21 22:09:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:09:22,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:09:22,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:09:22,579 INFO L225 Difference]: With dead ends: 119145 [2020-10-21 22:09:22,579 INFO L226 Difference]: Without dead ends: 119105 [2020-10-21 22:09:22,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:09:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119105 states. [2020-10-21 22:09:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119105 to 34815. [2020-10-21 22:09:24,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-10-21 22:09:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-10-21 22:09:25,081 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-10-21 22:09:25,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:09:25,081 INFO L481 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-10-21 22:09:25,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:09:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-10-21 22:09:25,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:09:25,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:09:25,084 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:09:25,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-21 22:09:25,291 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:09:25,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:09:25,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1148845205, now seen corresponding path program 3 times [2020-10-21 22:09:25,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:09:25,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511034939] [2020-10-21 22:09:25,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:09:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:09:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:09:25,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511034939] [2020-10-21 22:09:25,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827091132] [2020-10-21 22:09:25,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:09:25,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 22:09:25,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:09:25,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:09:25,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:09:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:09:25,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:09:25,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:09:25,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025278532] [2020-10-21 22:09:25,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:09:25,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:09:25,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:09:25,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:09:25,444 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 9 states. [2020-10-21 22:09:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:09:27,138 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-10-21 22:09:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:09:27,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:09:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:09:27,536 INFO L225 Difference]: With dead ends: 118955 [2020-10-21 22:09:27,536 INFO L226 Difference]: Without dead ends: 118925 [2020-10-21 22:09:27,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:09:28,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-10-21 22:09:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-10-21 22:09:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-10-21 22:09:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-10-21 22:09:33,262 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-10-21 22:09:33,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:09:33,263 INFO L481 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-10-21 22:09:33,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:09:33,263 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-10-21 22:09:33,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:09:33,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:09:33,266 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:09:33,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-21 22:09:33,467 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, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:09:33,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:09:33,467 INFO L82 PathProgramCache]: Analyzing trace with hash 666370483, now seen corresponding path program 3 times [2020-10-21 22:09:33,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:09:33,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566157235] [2020-10-21 22:09:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:09:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:09:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:09:33,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566157235] [2020-10-21 22:09:33,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183412951] [2020-10-21 22:09:33,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:09:33,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 22:09:33,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:09:33,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:09:33,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:09:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:09:33,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:09:33,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:09:33,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108074752] [2020-10-21 22:09:33,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:09:33,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:09:33,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:09:33,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:09:33,630 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 9 states. [2020-10-21 22:09:34,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:09:34,866 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-10-21 22:09:34,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:09:34,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:09:34,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2020-10-21 22:09:35,288 INFO L225 Difference]: With dead ends: 117996 [2020-10-21 22:09:35,288 INFO L226 Difference]: Without dead ends: 117966 [2020-10-21 22:09:35,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:09:36,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-10-21 22:09:36,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:09:36,575 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-21 22:09:36,579 WARN L235 ceAbstractionStarter]: Timeout [2020-10-21 22:09:36,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 10:09:36 BasicIcfg [2020-10-21 22:09:36,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 22:09:36,580 INFO L168 Benchmark]: Toolchain (without parser) took 229716.01 ms. Allocated memory was 148.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 102.5 MB in the beginning and 957.1 MB in the end (delta: -854.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2020-10-21 22:09:36,581 INFO L168 Benchmark]: CDTParser took 3.94 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-21 22:09:36,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.21 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 101.7 MB in the beginning and 160.8 MB in the end (delta: -59.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-10-21 22:09:36,581 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.94 ms. Allocated memory is still 203.9 MB. Free memory was 160.8 MB in the beginning and 158.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-21 22:09:36,582 INFO L168 Benchmark]: Boogie Preprocessor took 30.07 ms. Allocated memory is still 203.9 MB. Free memory was 158.2 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-21 22:09:36,582 INFO L168 Benchmark]: RCFGBuilder took 442.36 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 136.1 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-10-21 22:09:36,582 INFO L168 Benchmark]: TraceAbstraction took 228469.24 ms. Allocated memory was 203.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 135.5 MB in the beginning and 957.1 MB in the end (delta: -821.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2020-10-21 22:09:36,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.94 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 714.21 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 101.7 MB in the beginning and 160.8 MB in the end (delta: -59.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.94 ms. Allocated memory is still 203.9 MB. Free memory was 160.8 MB in the beginning and 158.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.07 ms. Allocated memory is still 203.9 MB. Free memory was 158.2 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 442.36 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 136.1 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228469.24 ms. Allocated memory was 203.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 135.5 MB in the beginning and 957.1 MB in the end (delta: -821.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 650 VarBasedMoverChecksPositive, 6 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 5 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 63 PlacesBefore, 18 PlacesAfterwards, 60 TransitionsBefore, 12 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 60 TotalNumberOfCompositions, 871 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 944 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 35 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 88 PlacesBefore, 31 PlacesAfterwards, 83 TransitionsBefore, 21 TransitionsAfterwards, 1428 CoEnabledTransitionPairs, 5 FixpointIterations, 35 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 7 ConcurrentYvCompositions, 5 ChoiceCompositions, 83 TotalNumberOfCompositions, 1665 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1345 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 21 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 52 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 113 PlacesBefore, 41 PlacesAfterwards, 106 TransitionsBefore, 27 TransitionsAfterwards, 1998 CoEnabledTransitionPairs, 5 FixpointIterations, 50 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 8 ConcurrentYvCompositions, 7 ChoiceCompositions, 111 TotalNumberOfCompositions, 2809 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1893 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 94 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 138 PlacesBefore, 51 PlacesAfterwards, 129 TransitionsBefore, 33 TransitionsAfterwards, 2652 CoEnabledTransitionPairs, 6 FixpointIterations, 68 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 8 ConcurrentYvCompositions, 9 ChoiceCompositions, 139 TotalNumberOfCompositions, 3837 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2037 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 81 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 163 PlacesBefore, 61 PlacesAfterwards, 152 TransitionsBefore, 39 TransitionsAfterwards, 3390 CoEnabledTransitionPairs, 6 FixpointIterations, 81 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 7 ConcurrentYvCompositions, 11 ChoiceCompositions, 164 TotalNumberOfCompositions, 4983 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2632 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 38 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 113 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 188 PlacesBefore, 71 PlacesAfterwards, 175 TransitionsBefore, 45 TransitionsAfterwards, 4212 CoEnabledTransitionPairs, 5 FixpointIterations, 99 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 6 ConcurrentYvCompositions, 13 ChoiceCompositions, 193 TotalNumberOfCompositions, 6134 MoverChecksTotal - TimeoutResultAtElement [Line: 683]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 683). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 57 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 228.0s, OverallIterations: 108, TraceHistogramMax: 6, AutomataDifference: 78.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.5s, HoareTripleCheckerStatistics: 6438 SDtfs, 20532 SDslu, 19902 SDs, 0 SdLazy, 21744 SolverSat, 1780 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2900 GetRequests, 952 SyntacticMatches, 0 SemanticMatches, 1948 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11860 ImplicationChecksByTransitivity, 16.5s 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: 113.2s AutomataMinimizationTime, 103 MinimizatonAttempts, 2423804 StatesRemovedByMinimization, 95 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 3134 NumberOfCodeBlocks, 3078 NumberOfCodeBlocksAsserted, 178 NumberOfCheckSat, 2896 ConstructedInterpolants, 0 QuantifiedInterpolants, 181416 SizeOfPredicates, 252 NumberOfNonLiveVariables, 6134 ConjunctsInSsa, 346 ConjunctsInUnsatCore, 150 InterpolantComputations, 56 PerfectInterpolantSequences, 1066/1736 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