/usr/bin/java -Xmx16000000000 -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-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 13:34:00,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 13:34:00,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 13:34:00,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 13:34:00,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 13:34:00,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 13:34:00,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 13:34:00,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 13:34:00,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 13:34:00,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 13:34:00,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 13:34:00,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 13:34:00,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 13:34:00,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 13:34:00,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 13:34:00,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 13:34:00,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 13:34:00,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 13:34:00,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 13:34:00,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 13:34:00,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 13:34:00,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 13:34:00,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 13:34:00,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 13:34:00,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 13:34:00,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 13:34:00,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 13:34:00,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 13:34:00,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 13:34:00,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 13:34:00,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 13:34:00,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 13:34:00,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 13:34:00,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 13:34:00,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 13:34:00,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 13:34:00,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 13:34:00,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 13:34:00,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 13:34:00,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 13:34:00,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 13:34:00,381 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 [2020-10-09 13:34:00,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 13:34:00,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 13:34:00,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 13:34:00,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 13:34:00,422 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 13:34:00,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 13:34:00,425 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 13:34:00,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 13:34:00,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 13:34:00,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 13:34:00,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 13:34:00,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 13:34:00,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 13:34:00,428 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 13:34:00,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 13:34:00,429 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 13:34:00,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 13:34:00,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 13:34:00,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 13:34:00,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 13:34:00,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 13:34:00,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 13:34:00,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 13:34:00,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 13:34:00,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 13:34:00,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 13:34:00,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 13:34:00,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 13:34:00,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 13:34:00,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 13:34:00,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 13:34:00,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 13:34:00,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 13:34:00,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 13:34:00,727 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 13:34:00,728 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-10-09 13:34:00,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d10f544/2b3845294a194200bea97805437a0378/FLAG848ee019b [2020-10-09 13:34:01,335 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 13:34:01,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-10-09 13:34:01,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d10f544/2b3845294a194200bea97805437a0378/FLAG848ee019b [2020-10-09 13:34:01,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d10f544/2b3845294a194200bea97805437a0378 [2020-10-09 13:34:01,642 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 13:34:01,644 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 13:34:01,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 13:34:01,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 13:34:01,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 13:34:01,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 01:34:01" (1/1) ... [2020-10-09 13:34:01,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f56fd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:01, skipping insertion in model container [2020-10-09 13:34:01,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 01:34:01" (1/1) ... [2020-10-09 13:34:01,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 13:34:01,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 13:34:02,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 13:34:02,395 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 13:34:02,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 13:34:02,658 INFO L208 MainTranslator]: Completed translation [2020-10-09 13:34:02,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:02 WrapperNode [2020-10-09 13:34:02,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 13:34:02,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 13:34:02,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 13:34:02,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 13:34:02,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:02" (1/1) ... [2020-10-09 13:34:02,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:02" (1/1) ... [2020-10-09 13:34:02,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 13:34:02,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 13:34:02,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 13:34:02,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 13:34:02,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:02" (1/1) ... [2020-10-09 13:34:02,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:02" (1/1) ... [2020-10-09 13:34:02,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:02" (1/1) ... [2020-10-09 13:34:02,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:02" (1/1) ... [2020-10-09 13:34:02,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:02" (1/1) ... [2020-10-09 13:34:02,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:02" (1/1) ... [2020-10-09 13:34:02,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:02" (1/1) ... [2020-10-09 13:34:02,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 13:34:02,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 13:34:02,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 13:34:02,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 13:34:02,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:02" (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 [2020-10-09 13:34:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 13:34:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 13:34:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 13:34:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2020-10-09 13:34:02,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2020-10-09 13:34:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 13:34:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 13:34:02,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 13:34:02,851 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 13:34:03,248 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 13:34:03,248 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 13:34:03,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 01:34:03 BoogieIcfgContainer [2020-10-09 13:34:03,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 13:34:03,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 13:34:03,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 13:34:03,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 13:34:03,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 01:34:01" (1/3) ... [2020-10-09 13:34:03,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fd7e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 01:34:03, skipping insertion in model container [2020-10-09 13:34:03,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:34:02" (2/3) ... [2020-10-09 13:34:03,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fd7e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 01:34:03, skipping insertion in model container [2020-10-09 13:34:03,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 01:34:03" (3/3) ... [2020-10-09 13:34:03,260 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2020-10-09 13:34:03,273 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 13:34:03,273 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 13:34:03,281 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 13:34:03,282 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 13:34:03,308 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,309 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,309 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,309 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,309 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,310 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,310 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,310 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,311 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,311 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,311 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,311 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,312 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,312 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,312 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,313 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,313 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,313 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,313 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,313 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,314 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,317 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,318 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,318 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,318 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,319 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,319 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,319 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,319 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:34:03,345 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-09 13:34:03,367 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:34:03,367 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:34:03,367 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:34:03,368 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:34:03,368 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:34:03,368 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:34:03,368 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:34:03,368 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:34:03,383 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:34:03,386 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions, 178 flow [2020-10-09 13:34:03,389 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 85 transitions, 178 flow [2020-10-09 13:34:03,391 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 178 flow [2020-10-09 13:34:03,443 INFO L129 PetriNetUnfolder]: 7/84 cut-off events. [2020-10-09 13:34:03,444 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-09 13:34:03,449 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-10-09 13:34:03,452 INFO L117 LiptonReduction]: Number of co-enabled transitions 640 [2020-10-09 13:34:04,789 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-09 13:34:04,980 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-09 13:34:05,580 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-09 13:34:05,882 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-09 13:34:06,366 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-09 13:34:06,762 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-09 13:34:08,128 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2020-10-09 13:34:08,763 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-09 13:34:08,766 INFO L132 LiptonReduction]: Checked pairs total: 580 [2020-10-09 13:34:08,766 INFO L134 LiptonReduction]: Total number of compositions: 83 [2020-10-09 13:34:08,773 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 13 transitions, 34 flow [2020-10-09 13:34:08,782 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17 states. [2020-10-09 13:34:08,784 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-10-09 13:34:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 13:34:08,791 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:08,792 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:08,792 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:08,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:08,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1450466956, now seen corresponding path program 1 times [2020-10-09 13:34:08,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:08,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856280212] [2020-10-09 13:34:08,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:34:09,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856280212] [2020-10-09 13:34:09,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:34:09,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:34:09,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537004071] [2020-10-09 13:34:09,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:34:09,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:09,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:34:09,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:34:09,065 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2020-10-09 13:34:09,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:09,108 INFO L93 Difference]: Finished difference Result 20 states and 36 transitions. [2020-10-09 13:34:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:34:09,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-09 13:34:09,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:09,128 INFO L225 Difference]: With dead ends: 20 [2020-10-09 13:34:09,129 INFO L226 Difference]: Without dead ends: 20 [2020-10-09 13:34:09,130 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:34:09,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-09 13:34:09,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-09 13:34:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-09 13:34:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 36 transitions. [2020-10-09 13:34:09,172 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 36 transitions. Word has length 8 [2020-10-09 13:34:09,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:09,173 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 36 transitions. [2020-10-09 13:34:09,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:34:09,174 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 36 transitions. [2020-10-09 13:34:09,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 13:34:09,175 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:09,175 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:09,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 13:34:09,176 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:09,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:09,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1984436175, now seen corresponding path program 1 times [2020-10-09 13:34:09,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:09,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908329582] [2020-10-09 13:34:09,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:34:09,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908329582] [2020-10-09 13:34:09,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273648526] [2020-10-09 13:34:09,268 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 [2020-10-09 13:34:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:09,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-09 13:34:09,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:09,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 13:34:09,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-09 13:34:09,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-09 13:34:09,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171162824] [2020-10-09 13:34:09,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:34:09,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:09,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:34:09,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:34:09,399 INFO L87 Difference]: Start difference. First operand 20 states and 36 transitions. Second operand 3 states. [2020-10-09 13:34:09,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:09,412 INFO L93 Difference]: Finished difference Result 28 states and 52 transitions. [2020-10-09 13:34:09,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:34:09,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-09 13:34:09,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:09,413 INFO L225 Difference]: With dead ends: 28 [2020-10-09 13:34:09,414 INFO L226 Difference]: Without dead ends: 28 [2020-10-09 13:34:09,415 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:34:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-09 13:34:09,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-10-09 13:34:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-09 13:34:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2020-10-09 13:34:09,420 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 44 transitions. Word has length 9 [2020-10-09 13:34:09,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:09,420 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 44 transitions. [2020-10-09 13:34:09,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:34:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 44 transitions. [2020-10-09 13:34:09,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 13:34:09,421 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:09,422 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:09,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-09 13:34:09,636 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:09,636 INFO L82 PathProgramCache]: Analyzing trace with hash -436238306, now seen corresponding path program 1 times [2020-10-09 13:34:09,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:09,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280033576] [2020-10-09 13:34:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:34:09,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280033576] [2020-10-09 13:34:09,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829713583] [2020-10-09 13:34:09,691 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 [2020-10-09 13:34:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:09,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-09 13:34:09,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 13:34:09,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:09,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-09 13:34:09,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544013603] [2020-10-09 13:34:09,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 13:34:09,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:09,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 13:34:09,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-09 13:34:09,811 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. Second operand 6 states. [2020-10-09 13:34:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:09,920 INFO L93 Difference]: Finished difference Result 44 states and 84 transitions. [2020-10-09 13:34:09,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 13:34:09,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-09 13:34:09,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:09,922 INFO L225 Difference]: With dead ends: 44 [2020-10-09 13:34:09,922 INFO L226 Difference]: Without dead ends: 44 [2020-10-09 13:34:09,923 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-09 13:34:09,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-09 13:34:09,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-09 13:34:09,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-09 13:34:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 74 transitions. [2020-10-09 13:34:09,930 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 74 transitions. Word has length 11 [2020-10-09 13:34:09,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:09,930 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 74 transitions. [2020-10-09 13:34:09,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 13:34:09,930 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 74 transitions. [2020-10-09 13:34:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 13:34:09,931 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:09,931 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:10,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:34:10,135 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:10,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:10,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1899195462, now seen corresponding path program 2 times [2020-10-09 13:34:10,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:10,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799546331] [2020-10-09 13:34:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-09 13:34:10,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799546331] [2020-10-09 13:34:10,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162042007] [2020-10-09 13:34:10,206 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 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 [2020-10-09 13:34:10,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:34:10,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:10,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-09 13:34:10,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-09 13:34:10,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:10,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-09 13:34:10,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141531515] [2020-10-09 13:34:10,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 13:34:10,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:10,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 13:34:10,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-09 13:34:10,342 INFO L87 Difference]: Start difference. First operand 39 states and 74 transitions. Second operand 6 states. [2020-10-09 13:34:10,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:10,363 INFO L93 Difference]: Finished difference Result 54 states and 104 transitions. [2020-10-09 13:34:10,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:34:10,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-09 13:34:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:10,365 INFO L225 Difference]: With dead ends: 54 [2020-10-09 13:34:10,366 INFO L226 Difference]: Without dead ends: 54 [2020-10-09 13:34:10,366 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-09 13:34:10,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-09 13:34:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-10-09 13:34:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-09 13:34:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 94 transitions. [2020-10-09 13:34:10,374 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 94 transitions. Word has length 14 [2020-10-09 13:34:10,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:10,374 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 94 transitions. [2020-10-09 13:34:10,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 13:34:10,374 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 94 transitions. [2020-10-09 13:34:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-09 13:34:10,375 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:10,375 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:10,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:34:10,589 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:10,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:10,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1378033683, now seen corresponding path program 3 times [2020-10-09 13:34:10,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:10,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260654154] [2020-10-09 13:34:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-09 13:34:10,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260654154] [2020-10-09 13:34:10,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178900870] [2020-10-09 13:34:10,671 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 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 [2020-10-09 13:34:10,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 13:34:10,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:10,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-09 13:34:10,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:34:10,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:10,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-10-09 13:34:10,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788982737] [2020-10-09 13:34:10,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:34:10,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:10,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:34:10,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:34:10,803 INFO L87 Difference]: Start difference. First operand 49 states and 94 transitions. Second operand 9 states. [2020-10-09 13:34:11,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:11,044 INFO L93 Difference]: Finished difference Result 76 states and 148 transitions. [2020-10-09 13:34:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 13:34:11,045 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-10-09 13:34:11,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:11,046 INFO L225 Difference]: With dead ends: 76 [2020-10-09 13:34:11,046 INFO L226 Difference]: Without dead ends: 76 [2020-10-09 13:34:11,047 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2020-10-09 13:34:11,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-09 13:34:11,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-10-09 13:34:11,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-09 13:34:11,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 136 transitions. [2020-10-09 13:34:11,055 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 136 transitions. Word has length 16 [2020-10-09 13:34:11,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:11,056 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 136 transitions. [2020-10-09 13:34:11,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:34:11,056 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 136 transitions. [2020-10-09 13:34:11,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:34:11,057 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:11,057 INFO L421 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:11,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:34:11,272 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:11,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:11,273 INFO L82 PathProgramCache]: Analyzing trace with hash -115221563, now seen corresponding path program 4 times [2020-10-09 13:34:11,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:11,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867186995] [2020-10-09 13:34:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:34:11,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867186995] [2020-10-09 13:34:11,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161736950] [2020-10-09 13:34:11,352 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 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 [2020-10-09 13:34:11,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:34:11,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:11,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 13:34:11,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:34:11,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:11,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-09 13:34:11,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764847370] [2020-10-09 13:34:11,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 13:34:11,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:11,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 13:34:11,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:34:11,453 INFO L87 Difference]: Start difference. First operand 70 states and 136 transitions. Second operand 8 states. [2020-10-09 13:34:11,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:11,483 INFO L93 Difference]: Finished difference Result 88 states and 172 transitions. [2020-10-09 13:34:11,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 13:34:11,484 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-09 13:34:11,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:11,485 INFO L225 Difference]: With dead ends: 88 [2020-10-09 13:34:11,485 INFO L226 Difference]: Without dead ends: 88 [2020-10-09 13:34:11,486 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:34:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-09 13:34:11,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2020-10-09 13:34:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-09 13:34:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2020-10-09 13:34:11,495 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 19 [2020-10-09 13:34:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:11,495 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2020-10-09 13:34:11,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 13:34:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2020-10-09 13:34:11,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:34:11,497 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:11,497 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:11,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-09 13:34:11,710 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:11,711 INFO L82 PathProgramCache]: Analyzing trace with hash -882362510, now seen corresponding path program 5 times [2020-10-09 13:34:11,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:11,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987308152] [2020-10-09 13:34:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:34:11,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987308152] [2020-10-09 13:34:11,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952606373] [2020-10-09 13:34:11,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:34:11,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-09 13:34:11,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:11,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-09 13:34:11,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-09 13:34:11,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:11,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2020-10-09 13:34:11,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729141251] [2020-10-09 13:34:11,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:34:11,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:11,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:34:11,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:34:11,917 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 12 states. [2020-10-09 13:34:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:12,460 INFO L93 Difference]: Finished difference Result 116 states and 228 transitions. [2020-10-09 13:34:12,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-09 13:34:12,461 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-10-09 13:34:12,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:12,462 INFO L225 Difference]: With dead ends: 116 [2020-10-09 13:34:12,462 INFO L226 Difference]: Without dead ends: 116 [2020-10-09 13:34:12,463 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=420, Invalid=840, Unknown=0, NotChecked=0, Total=1260 [2020-10-09 13:34:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-09 13:34:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2020-10-09 13:34:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-09 13:34:12,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 214 transitions. [2020-10-09 13:34:12,472 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 214 transitions. Word has length 21 [2020-10-09 13:34:12,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:12,473 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 214 transitions. [2020-10-09 13:34:12,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:34:12,473 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 214 transitions. [2020-10-09 13:34:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-09 13:34:12,474 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:12,475 INFO L421 BasicCegarLoop]: trace histogram [6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:12,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:34:12,683 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:12,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1928037594, now seen corresponding path program 6 times [2020-10-09 13:34:12,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:12,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18565579] [2020-10-09 13:34:12,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:34:12,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18565579] [2020-10-09 13:34:12,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109011674] [2020-10-09 13:34:12,785 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:34:12,869 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-09 13:34:12,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:12,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 13:34:12,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-09 13:34:12,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:12,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2020-10-09 13:34:12,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853803553] [2020-10-09 13:34:12,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-09 13:34:12,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:12,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-09 13:34:12,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-09 13:34:12,938 INFO L87 Difference]: Start difference. First operand 109 states and 214 transitions. Second operand 14 states. [2020-10-09 13:34:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:13,734 INFO L93 Difference]: Finished difference Result 148 states and 292 transitions. [2020-10-09 13:34:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-09 13:34:13,734 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2020-10-09 13:34:13,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:13,736 INFO L225 Difference]: With dead ends: 148 [2020-10-09 13:34:13,737 INFO L226 Difference]: Without dead ends: 148 [2020-10-09 13:34:13,739 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=756, Invalid=1596, Unknown=0, NotChecked=0, Total=2352 [2020-10-09 13:34:13,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-09 13:34:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 140. [2020-10-09 13:34:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 13:34:13,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 276 transitions. [2020-10-09 13:34:13,749 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 276 transitions. Word has length 24 [2020-10-09 13:34:13,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:13,749 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 276 transitions. [2020-10-09 13:34:13,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-09 13:34:13,750 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 276 transitions. [2020-10-09 13:34:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:34:13,751 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:13,752 INFO L421 BasicCegarLoop]: trace histogram [7, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:13,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:34:13,959 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:13,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:13,959 INFO L82 PathProgramCache]: Analyzing trace with hash 867592876, now seen corresponding path program 7 times [2020-10-09 13:34:13,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:13,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357637130] [2020-10-09 13:34:13,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-09 13:34:14,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357637130] [2020-10-09 13:34:14,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864041663] [2020-10-09 13:34:14,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:34:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:14,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:34:14,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-09 13:34:14,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:14,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-10-09 13:34:14,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955404442] [2020-10-09 13:34:14,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 13:34:14,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:14,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 13:34:14,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-09 13:34:14,169 INFO L87 Difference]: Start difference. First operand 140 states and 276 transitions. Second operand 11 states. [2020-10-09 13:34:14,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:14,218 INFO L93 Difference]: Finished difference Result 164 states and 324 transitions. [2020-10-09 13:34:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 13:34:14,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-09 13:34:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:14,220 INFO L225 Difference]: With dead ends: 164 [2020-10-09 13:34:14,220 INFO L226 Difference]: Without dead ends: 164 [2020-10-09 13:34:14,221 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-09 13:34:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-09 13:34:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 156. [2020-10-09 13:34:14,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-09 13:34:14,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 308 transitions. [2020-10-09 13:34:14,230 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 308 transitions. Word has length 27 [2020-10-09 13:34:14,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:14,231 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 308 transitions. [2020-10-09 13:34:14,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 13:34:14,231 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 308 transitions. [2020-10-09 13:34:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:34:14,233 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:14,233 INFO L421 BasicCegarLoop]: trace histogram [8, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:14,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-09 13:34:14,448 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:14,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:14,448 INFO L82 PathProgramCache]: Analyzing trace with hash -441398951, now seen corresponding path program 8 times [2020-10-09 13:34:14,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:14,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849548383] [2020-10-09 13:34:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-09 13:34:14,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849548383] [2020-10-09 13:34:14,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708601284] [2020-10-09 13:34:14,565 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 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 [2020-10-09 13:34:14,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:34:14,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:14,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 13:34:14,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-09 13:34:14,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:14,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-09 13:34:14,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899834861] [2020-10-09 13:34:14,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:34:14,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:14,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:34:14,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:34:14,682 INFO L87 Difference]: Start difference. First operand 156 states and 308 transitions. Second operand 12 states. [2020-10-09 13:34:14,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:14,741 INFO L93 Difference]: Finished difference Result 180 states and 356 transitions. [2020-10-09 13:34:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 13:34:14,741 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-10-09 13:34:14,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:14,743 INFO L225 Difference]: With dead ends: 180 [2020-10-09 13:34:14,743 INFO L226 Difference]: Without dead ends: 180 [2020-10-09 13:34:14,744 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:34:14,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-09 13:34:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 172. [2020-10-09 13:34:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-09 13:34:14,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 340 transitions. [2020-10-09 13:34:14,774 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 340 transitions. Word has length 29 [2020-10-09 13:34:14,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:14,775 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 340 transitions. [2020-10-09 13:34:14,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:34:14,775 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 340 transitions. [2020-10-09 13:34:14,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-09 13:34:14,776 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:14,777 INFO L421 BasicCegarLoop]: trace histogram [9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:14,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:34:14,992 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:14,993 INFO L82 PathProgramCache]: Analyzing trace with hash 42873030, now seen corresponding path program 9 times [2020-10-09 13:34:14,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:14,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615206178] [2020-10-09 13:34:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:15,111 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-09 13:34:15,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615206178] [2020-10-09 13:34:15,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897172054] [2020-10-09 13:34:15,112 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 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 [2020-10-09 13:34:15,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-09 13:34:15,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:15,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:34:15,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-09 13:34:15,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:15,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2020-10-09 13:34:15,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582499108] [2020-10-09 13:34:15,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-09 13:34:15,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:15,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-09 13:34:15,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-09 13:34:15,359 INFO L87 Difference]: Start difference. First operand 172 states and 340 transitions. Second operand 18 states. [2020-10-09 13:34:17,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:17,129 INFO L93 Difference]: Finished difference Result 220 states and 436 transitions. [2020-10-09 13:34:17,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-10-09 13:34:17,129 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 31 [2020-10-09 13:34:17,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:17,131 INFO L225 Difference]: With dead ends: 220 [2020-10-09 13:34:17,131 INFO L226 Difference]: Without dead ends: 220 [2020-10-09 13:34:17,138 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1848, Invalid=4158, Unknown=0, NotChecked=0, Total=6006 [2020-10-09 13:34:17,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-09 13:34:17,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 211. [2020-10-09 13:34:17,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-09 13:34:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 418 transitions. [2020-10-09 13:34:17,149 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 418 transitions. Word has length 31 [2020-10-09 13:34:17,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:17,152 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 418 transitions. [2020-10-09 13:34:17,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-09 13:34:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 418 transitions. [2020-10-09 13:34:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-09 13:34:17,156 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:17,156 INFO L421 BasicCegarLoop]: trace histogram [10, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:17,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:34:17,377 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:17,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:17,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1510869138, now seen corresponding path program 10 times [2020-10-09 13:34:17,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:17,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021543214] [2020-10-09 13:34:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-09 13:34:17,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021543214] [2020-10-09 13:34:17,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53333670] [2020-10-09 13:34:17,513 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 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 [2020-10-09 13:34:17,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:34:17,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:17,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 13:34:17,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-09 13:34:17,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:17,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-10-09 13:34:17,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056748990] [2020-10-09 13:34:17,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-09 13:34:17,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:17,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-09 13:34:17,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-09 13:34:17,609 INFO L87 Difference]: Start difference. First operand 211 states and 418 transitions. Second operand 14 states. [2020-10-09 13:34:17,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:17,665 INFO L93 Difference]: Finished difference Result 238 states and 472 transitions. [2020-10-09 13:34:17,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:34:17,666 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-09 13:34:17,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:17,668 INFO L225 Difference]: With dead ends: 238 [2020-10-09 13:34:17,668 INFO L226 Difference]: Without dead ends: 238 [2020-10-09 13:34:17,668 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-09 13:34:17,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-09 13:34:17,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 229. [2020-10-09 13:34:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-09 13:34:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 454 transitions. [2020-10-09 13:34:17,677 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 454 transitions. Word has length 34 [2020-10-09 13:34:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:17,678 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 454 transitions. [2020-10-09 13:34:17,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-09 13:34:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 454 transitions. [2020-10-09 13:34:17,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-09 13:34:17,682 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:17,682 INFO L421 BasicCegarLoop]: trace histogram [11, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:17,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-09 13:34:17,891 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:17,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:17,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1014578501, now seen corresponding path program 11 times [2020-10-09 13:34:17,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:17,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116208718] [2020-10-09 13:34:17,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-09 13:34:18,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116208718] [2020-10-09 13:34:18,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122394107] [2020-10-09 13:34:18,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:34:18,146 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-09 13:34:18,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:18,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 13:34:18,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-09 13:34:18,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:18,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2020-10-09 13:34:18,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275324338] [2020-10-09 13:34:18,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-09 13:34:18,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:18,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-09 13:34:18,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-09 13:34:18,264 INFO L87 Difference]: Start difference. First operand 229 states and 454 transitions. Second operand 21 states. [2020-10-09 13:34:21,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:21,022 INFO L93 Difference]: Finished difference Result 284 states and 564 transitions. [2020-10-09 13:34:21,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-10-09 13:34:21,023 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2020-10-09 13:34:21,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:21,024 INFO L225 Difference]: With dead ends: 284 [2020-10-09 13:34:21,025 INFO L226 Difference]: Without dead ends: 284 [2020-10-09 13:34:21,028 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3563 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3276, Invalid=7644, Unknown=0, NotChecked=0, Total=10920 [2020-10-09 13:34:21,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-09 13:34:21,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2020-10-09 13:34:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-09 13:34:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 544 transitions. [2020-10-09 13:34:21,036 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 544 transitions. Word has length 36 [2020-10-09 13:34:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:21,036 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 544 transitions. [2020-10-09 13:34:21,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-09 13:34:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 544 transitions. [2020-10-09 13:34:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-09 13:34:21,037 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:21,037 INFO L421 BasicCegarLoop]: trace histogram [12, 12, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:21,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-09 13:34:21,251 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:21,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:21,251 INFO L82 PathProgramCache]: Analyzing trace with hash -299405075, now seen corresponding path program 12 times [2020-10-09 13:34:21,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:21,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888349711] [2020-10-09 13:34:21,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-09 13:34:21,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888349711] [2020-10-09 13:34:21,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166811953] [2020-10-09 13:34:21,421 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:34:21,512 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-10-09 13:34:21,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:21,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:34:21,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-09 13:34:21,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:21,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2020-10-09 13:34:21,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493868820] [2020-10-09 13:34:21,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 13:34:21,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:21,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 13:34:21,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-09 13:34:21,630 INFO L87 Difference]: Start difference. First operand 274 states and 544 transitions. Second operand 23 states. [2020-10-09 13:34:25,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:25,292 INFO L93 Difference]: Finished difference Result 334 states and 664 transitions. [2020-10-09 13:34:25,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-10-09 13:34:25,293 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 39 [2020-10-09 13:34:25,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:25,295 INFO L225 Difference]: With dead ends: 334 [2020-10-09 13:34:25,295 INFO L226 Difference]: Without dead ends: 334 [2020-10-09 13:34:25,300 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5452 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4725, Invalid=11277, Unknown=0, NotChecked=0, Total=16002 [2020-10-09 13:34:25,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-09 13:34:25,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 323. [2020-10-09 13:34:25,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-09 13:34:25,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 642 transitions. [2020-10-09 13:34:25,329 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 642 transitions. Word has length 39 [2020-10-09 13:34:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:25,331 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 642 transitions. [2020-10-09 13:34:25,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 13:34:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 642 transitions. [2020-10-09 13:34:25,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-09 13:34:25,332 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:25,332 INFO L421 BasicCegarLoop]: trace histogram [13, 13, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:25,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-09 13:34:25,547 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:25,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:25,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1077564853, now seen corresponding path program 13 times [2020-10-09 13:34:25,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:25,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852684302] [2020-10-09 13:34:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-09 13:34:25,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852684302] [2020-10-09 13:34:25,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990436658] [2020-10-09 13:34:25,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:34:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:25,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 13:34:25,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-09 13:34:25,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:25,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-10-09 13:34:25,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71115501] [2020-10-09 13:34:25,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 13:34:25,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:25,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 13:34:25,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-09 13:34:25,814 INFO L87 Difference]: Start difference. First operand 323 states and 642 transitions. Second operand 17 states. [2020-10-09 13:34:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:25,887 INFO L93 Difference]: Finished difference Result 356 states and 708 transitions. [2020-10-09 13:34:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 13:34:25,887 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-10-09 13:34:25,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:25,889 INFO L225 Difference]: With dead ends: 356 [2020-10-09 13:34:25,889 INFO L226 Difference]: Without dead ends: 356 [2020-10-09 13:34:25,890 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-09 13:34:25,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-09 13:34:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 345. [2020-10-09 13:34:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-10-09 13:34:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 686 transitions. [2020-10-09 13:34:25,898 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 686 transitions. Word has length 42 [2020-10-09 13:34:25,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:25,899 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 686 transitions. [2020-10-09 13:34:25,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 13:34:25,899 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 686 transitions. [2020-10-09 13:34:25,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-09 13:34:25,900 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:25,900 INFO L421 BasicCegarLoop]: trace histogram [14, 14, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:26,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:34:26,116 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:26,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:26,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1718191106, now seen corresponding path program 14 times [2020-10-09 13:34:26,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:26,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921304136] [2020-10-09 13:34:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-09 13:34:26,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921304136] [2020-10-09 13:34:26,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262965023] [2020-10-09 13:34:26,293 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 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 [2020-10-09 13:34:26,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:34:26,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:26,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-09 13:34:26,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-09 13:34:26,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:26,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-09 13:34:26,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127419119] [2020-10-09 13:34:26,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-09 13:34:26,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:26,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-09 13:34:26,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-09 13:34:26,403 INFO L87 Difference]: Start difference. First operand 345 states and 686 transitions. Second operand 18 states. [2020-10-09 13:34:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:26,479 INFO L93 Difference]: Finished difference Result 378 states and 752 transitions. [2020-10-09 13:34:26,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 13:34:26,479 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 44 [2020-10-09 13:34:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:26,481 INFO L225 Difference]: With dead ends: 378 [2020-10-09 13:34:26,482 INFO L226 Difference]: Without dead ends: 378 [2020-10-09 13:34:26,484 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-09 13:34:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-09 13:34:26,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 367. [2020-10-09 13:34:26,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-09 13:34:26,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 730 transitions. [2020-10-09 13:34:26,495 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 730 transitions. Word has length 44 [2020-10-09 13:34:26,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:26,495 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 730 transitions. [2020-10-09 13:34:26,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-09 13:34:26,495 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 730 transitions. [2020-10-09 13:34:26,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-09 13:34:26,497 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:26,497 INFO L421 BasicCegarLoop]: trace histogram [15, 15, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:26,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-09 13:34:26,712 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:26,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1115270385, now seen corresponding path program 15 times [2020-10-09 13:34:26,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:26,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003375276] [2020-10-09 13:34:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-09 13:34:27,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003375276] [2020-10-09 13:34:27,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518679183] [2020-10-09 13:34:27,013 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 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 [2020-10-09 13:34:27,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-09 13:34:27,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:27,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 13:34:27,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 15 proven. 36 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-10-09 13:34:27,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:27,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 27 [2020-10-09 13:34:27,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624602286] [2020-10-09 13:34:27,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-09 13:34:27,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:27,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-09 13:34:27,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2020-10-09 13:34:27,296 INFO L87 Difference]: Start difference. First operand 367 states and 730 transitions. Second operand 27 states. [2020-10-09 13:34:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:33,569 INFO L93 Difference]: Finished difference Result 436 states and 868 transitions. [2020-10-09 13:34:33,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2020-10-09 13:34:33,570 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 46 [2020-10-09 13:34:33,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:33,572 INFO L225 Difference]: With dead ends: 436 [2020-10-09 13:34:33,573 INFO L226 Difference]: Without dead ends: 436 [2020-10-09 13:34:33,578 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10431 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=8415, Invalid=20655, Unknown=0, NotChecked=0, Total=29070 [2020-10-09 13:34:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-09 13:34:33,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 424. [2020-10-09 13:34:33,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-09 13:34:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 844 transitions. [2020-10-09 13:34:33,588 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 844 transitions. Word has length 46 [2020-10-09 13:34:33,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:33,589 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 844 transitions. [2020-10-09 13:34:33,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-09 13:34:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 844 transitions. [2020-10-09 13:34:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-09 13:34:33,590 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:33,590 INFO L421 BasicCegarLoop]: trace histogram [16, 16, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:33,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-09 13:34:33,804 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:33,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:33,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1391947135, now seen corresponding path program 16 times [2020-10-09 13:34:33,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:33,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086979093] [2020-10-09 13:34:33,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-09 13:34:34,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086979093] [2020-10-09 13:34:34,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130416680] [2020-10-09 13:34:34,035 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 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 [2020-10-09 13:34:34,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:34:34,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:34,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-09 13:34:34,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-09 13:34:34,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:34,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-10-09 13:34:34,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737290212] [2020-10-09 13:34:34,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:34:34,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:34,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:34:34,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:34:34,144 INFO L87 Difference]: Start difference. First operand 424 states and 844 transitions. Second operand 20 states. [2020-10-09 13:34:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:34,248 INFO L93 Difference]: Finished difference Result 460 states and 916 transitions. [2020-10-09 13:34:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 13:34:34,249 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 49 [2020-10-09 13:34:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:34,251 INFO L225 Difference]: With dead ends: 460 [2020-10-09 13:34:34,252 INFO L226 Difference]: Without dead ends: 460 [2020-10-09 13:34:34,252 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:34:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-09 13:34:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 448. [2020-10-09 13:34:34,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-09 13:34:34,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 892 transitions. [2020-10-09 13:34:34,262 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 892 transitions. Word has length 49 [2020-10-09 13:34:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:34,262 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 892 transitions. [2020-10-09 13:34:34,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:34:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 892 transitions. [2020-10-09 13:34:34,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-09 13:34:34,264 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:34,264 INFO L421 BasicCegarLoop]: trace histogram [17, 17, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:34,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-09 13:34:34,478 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:34,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1588788882, now seen corresponding path program 17 times [2020-10-09 13:34:34,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:34,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776954445] [2020-10-09 13:34:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-09 13:34:34,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776954445] [2020-10-09 13:34:34,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16808971] [2020-10-09 13:34:34,753 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:34:34,825 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-10-09 13:34:34,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:34,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:34:34,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 17 proven. 45 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-10-09 13:34:35,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:35,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12] total 30 [2020-10-09 13:34:35,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211774426] [2020-10-09 13:34:35,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-09 13:34:35,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:35,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-09 13:34:35,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2020-10-09 13:34:35,039 INFO L87 Difference]: Start difference. First operand 448 states and 892 transitions. Second operand 30 states. [2020-10-09 13:34:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:44,192 INFO L93 Difference]: Finished difference Result 524 states and 1044 transitions. [2020-10-09 13:34:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2020-10-09 13:34:44,193 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 51 [2020-10-09 13:34:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:44,196 INFO L225 Difference]: With dead ends: 524 [2020-10-09 13:34:44,196 INFO L226 Difference]: Without dead ends: 524 [2020-10-09 13:34:44,199 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16280 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=12540, Invalid=31350, Unknown=0, NotChecked=0, Total=43890 [2020-10-09 13:34:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-10-09 13:34:44,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 511. [2020-10-09 13:34:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-09 13:34:44,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 1018 transitions. [2020-10-09 13:34:44,209 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 1018 transitions. Word has length 51 [2020-10-09 13:34:44,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:44,210 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 1018 transitions. [2020-10-09 13:34:44,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-09 13:34:44,210 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 1018 transitions. [2020-10-09 13:34:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-09 13:34:44,211 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:44,212 INFO L421 BasicCegarLoop]: trace histogram [18, 18, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:44,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:34:44,423 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:44,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:44,423 INFO L82 PathProgramCache]: Analyzing trace with hash 835392874, now seen corresponding path program 18 times [2020-10-09 13:34:44,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:44,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948655161] [2020-10-09 13:34:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-09 13:34:44,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948655161] [2020-10-09 13:34:44,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003698999] [2020-10-09 13:34:44,685 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:34:44,796 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-09 13:34:44,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:44,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 13:34:44,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 18 proven. 55 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-09 13:34:45,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:45,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 32 [2020-10-09 13:34:45,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236216018] [2020-10-09 13:34:45,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-09 13:34:45,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:45,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-09 13:34:45,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2020-10-09 13:34:45,037 INFO L87 Difference]: Start difference. First operand 511 states and 1018 transitions. Second operand 32 states. [2020-10-09 13:34:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:57,083 INFO L93 Difference]: Finished difference Result 592 states and 1180 transitions. [2020-10-09 13:34:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2020-10-09 13:34:57,084 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 54 [2020-10-09 13:34:57,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:57,087 INFO L225 Difference]: With dead ends: 592 [2020-10-09 13:34:57,087 INFO L226 Difference]: Without dead ends: 592 [2020-10-09 13:34:57,090 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21934 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=16380, Invalid=41460, Unknown=0, NotChecked=0, Total=57840 [2020-10-09 13:34:57,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-10-09 13:34:57,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 578. [2020-10-09 13:34:57,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-09 13:34:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1152 transitions. [2020-10-09 13:34:57,101 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1152 transitions. Word has length 54 [2020-10-09 13:34:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:57,101 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1152 transitions. [2020-10-09 13:34:57,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-09 13:34:57,102 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1152 transitions. [2020-10-09 13:34:57,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-09 13:34:57,103 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:57,103 INFO L421 BasicCegarLoop]: trace histogram [19, 19, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:57,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:34:57,316 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:57,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1589265368, now seen corresponding path program 19 times [2020-10-09 13:34:57,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:57,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12854376] [2020-10-09 13:34:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-09 13:34:57,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12854376] [2020-10-09 13:34:57,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204518956] [2020-10-09 13:34:57,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:34:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:57,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-09 13:34:57,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:34:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-09 13:34:57,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:34:57,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-10-09 13:34:57,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828440928] [2020-10-09 13:34:57,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 13:34:57,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:34:57,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 13:34:57,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-09 13:34:57,781 INFO L87 Difference]: Start difference. First operand 578 states and 1152 transitions. Second operand 23 states. [2020-10-09 13:34:57,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:34:57,872 INFO L93 Difference]: Finished difference Result 606 states and 1208 transitions. [2020-10-09 13:34:57,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-09 13:34:57,873 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-10-09 13:34:57,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:34:57,876 INFO L225 Difference]: With dead ends: 606 [2020-10-09 13:34:57,876 INFO L226 Difference]: Without dead ends: 606 [2020-10-09 13:34:57,876 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-09 13:34:57,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-10-09 13:34:57,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 606. [2020-10-09 13:34:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-10-09 13:34:57,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1208 transitions. [2020-10-09 13:34:57,886 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1208 transitions. Word has length 57 [2020-10-09 13:34:57,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:34:57,887 INFO L481 AbstractCegarLoop]: Abstraction has 606 states and 1208 transitions. [2020-10-09 13:34:57,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 13:34:57,887 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1208 transitions. [2020-10-09 13:34:57,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-09 13:34:57,889 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:34:57,889 INFO L421 BasicCegarLoop]: trace histogram [20, 20, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:34:58,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-09 13:34:58,104 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:34:58,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:34:58,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1130959339, now seen corresponding path program 20 times [2020-10-09 13:34:58,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:34:58,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129536084] [2020-10-09 13:34:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:34:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:34:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-09 13:34:58,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129536084] [2020-10-09 13:34:58,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379475306] [2020-10-09 13:34:58,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:34:58,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:34:58,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:34:58,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 53 conjunts are in the unsatisfiable core [2020-10-09 13:34:58,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:35:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 466 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:35:00,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:35:00,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 52] total 66 [2020-10-09 13:35:00,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873801435] [2020-10-09 13:35:00,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-09 13:35:00,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:35:00,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-09 13:35:00,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=881, Invalid=3409, Unknown=0, NotChecked=0, Total=4290 [2020-10-09 13:35:00,106 INFO L87 Difference]: Start difference. First operand 606 states and 1208 transitions. Second operand 66 states. [2020-10-09 13:39:06,194 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-09 13:39:25,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:39:25,199 INFO L93 Difference]: Finished difference Result 30049 states and 60080 transitions. [2020-10-09 13:39:25,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2384 states. [2020-10-09 13:39:25,201 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 59 [2020-10-09 13:39:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:39:25,310 INFO L225 Difference]: With dead ends: 30049 [2020-10-09 13:39:25,310 INFO L226 Difference]: Without dead ends: 30025 [2020-10-09 13:39:25,497 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2769 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 2393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3796224 ImplicationChecksByTransitivity, 235.2s TimeCoverageRelationStatistics Valid=1405807, Invalid=4327823, Unknown=0, NotChecked=0, Total=5733630 [2020-10-09 13:39:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30025 states. [2020-10-09 13:39:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30025 to 1198. [2020-10-09 13:39:25,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2020-10-09 13:39:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 2520 transitions. [2020-10-09 13:39:25,708 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 2520 transitions. Word has length 59 [2020-10-09 13:39:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:39:25,708 INFO L481 AbstractCegarLoop]: Abstraction has 1198 states and 2520 transitions. [2020-10-09 13:39:25,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-09 13:39:25,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 2520 transitions. [2020-10-09 13:39:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-09 13:39:25,711 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:39:25,711 INFO L421 BasicCegarLoop]: trace histogram [20, 20, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:39:25,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-09 13:39:25,925 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:39:25,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:39:25,926 INFO L82 PathProgramCache]: Analyzing trace with hash -669634640, now seen corresponding path program 21 times [2020-10-09 13:39:25,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:39:25,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659279815] [2020-10-09 13:39:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:39:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:39:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-09 13:39:26,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659279815] [2020-10-09 13:39:26,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095354285] [2020-10-09 13:39:26,282 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 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 [2020-10-09 13:39:26,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-10-09 13:39:26,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:39:26,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-09 13:39:26,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:39:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-09 13:39:26,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:39:26,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-10-09 13:39:26,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363032658] [2020-10-09 13:39:26,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:39:26,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:39:26,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:39:26,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:39:26,505 INFO L87 Difference]: Start difference. First operand 1198 states and 2520 transitions. Second operand 16 states. [2020-10-09 13:39:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:39:26,679 INFO L93 Difference]: Finished difference Result 1382 states and 2810 transitions. [2020-10-09 13:39:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 13:39:26,682 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-10-09 13:39:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:39:26,685 INFO L225 Difference]: With dead ends: 1382 [2020-10-09 13:39:26,685 INFO L226 Difference]: Without dead ends: 1382 [2020-10-09 13:39:26,687 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:39:26,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2020-10-09 13:39:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1280. [2020-10-09 13:39:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-10-09 13:39:26,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 2684 transitions. [2020-10-09 13:39:26,713 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 2684 transitions. Word has length 60 [2020-10-09 13:39:26,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:39:26,714 INFO L481 AbstractCegarLoop]: Abstraction has 1280 states and 2684 transitions. [2020-10-09 13:39:26,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:39:26,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 2684 transitions. [2020-10-09 13:39:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-09 13:39:26,717 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:39:26,717 INFO L421 BasicCegarLoop]: trace histogram [20, 20, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:39:26,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:39:26,930 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:39:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:39:26,931 INFO L82 PathProgramCache]: Analyzing trace with hash 746529141, now seen corresponding path program 22 times [2020-10-09 13:39:26,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:39:26,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112664681] [2020-10-09 13:39:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:39:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:39:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 20 proven. 91 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-09 13:39:27,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112664681] [2020-10-09 13:39:27,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620004692] [2020-10-09 13:39:27,267 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 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 [2020-10-09 13:39:27,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:39:27,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:39:27,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 55 conjunts are in the unsatisfiable core [2020-10-09 13:39:27,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:39:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:39:31,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:39:31,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 54] total 70 [2020-10-09 13:39:31,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632896309] [2020-10-09 13:39:31,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-09 13:39:31,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:39:31,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-09 13:39:31,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=979, Invalid=3851, Unknown=0, NotChecked=0, Total=4830 [2020-10-09 13:39:31,219 INFO L87 Difference]: Start difference. First operand 1280 states and 2684 transitions. Second operand 70 states. Received shutdown request... [2020-10-09 13:47:26,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2528 states. [2020-10-09 13:47:27,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-09 13:47:27,067 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-09 13:47:27,071 WARN L235 ceAbstractionStarter]: Timeout [2020-10-09 13:47:27,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 01:47:27 BasicIcfg [2020-10-09 13:47:27,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 13:47:27,073 INFO L168 Benchmark]: Toolchain (without parser) took 805429.84 ms. Allocated memory was 253.2 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 207.5 MB in the beginning and 979.7 MB in the end (delta: -772.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 14.2 GB. [2020-10-09 13:47:27,073 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 253.2 MB. Free memory was 231.3 MB in the beginning and 230.5 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. [2020-10-09 13:47:27,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1016.45 ms. Allocated memory was 253.2 MB in the beginning and 321.4 MB in the end (delta: 68.2 MB). Free memory was 207.5 MB in the beginning and 224.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 61.2 MB. Max. memory is 14.2 GB. [2020-10-09 13:47:27,074 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.37 ms. Allocated memory is still 321.4 MB. Free memory was 224.7 MB in the beginning and 222.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 13:47:27,074 INFO L168 Benchmark]: Boogie Preprocessor took 39.60 ms. Allocated memory is still 321.4 MB. Free memory was 222.2 MB in the beginning and 220.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-09 13:47:27,075 INFO L168 Benchmark]: RCFGBuilder took 484.26 ms. Allocated memory is still 321.4 MB. Free memory was 220.6 MB in the beginning and 192.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 14.2 GB. [2020-10-09 13:47:27,075 INFO L168 Benchmark]: TraceAbstraction took 803819.11 ms. Allocated memory was 321.4 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 192.6 MB in the beginning and 979.7 MB in the end (delta: -787.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 14.2 GB. [2020-10-09 13:47:27,077 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 253.2 MB. Free memory was 231.3 MB in the beginning and 230.5 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 1016.45 ms. Allocated memory was 253.2 MB in the beginning and 321.4 MB in the end (delta: 68.2 MB). Free memory was 207.5 MB in the beginning and 224.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 61.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 64.37 ms. Allocated memory is still 321.4 MB. Free memory was 224.7 MB in the beginning and 222.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 39.60 ms. Allocated memory is still 321.4 MB. Free memory was 222.2 MB in the beginning and 220.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 484.26 ms. Allocated memory is still 321.4 MB. Free memory was 220.6 MB in the beginning and 192.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 803819.11 ms. Allocated memory was 321.4 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 192.6 MB in the beginning and 979.7 MB in the end (delta: -787.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 432 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 9 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 12 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.3s, 82 PlacesBefore, 15 PlacesAfterwards, 85 TransitionsBefore, 13 TransitionsAfterwards, 640 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 83 TotalNumberOfCompositions, 580 MoverChecksTotal - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (1280states) and FLOYD_HOARE automaton (currently 2528 states, 70 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 2569 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 803.7s, OverallIterations: 24, TraceHistogramMax: 20, AutomataDifference: 779.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 324 SDtfs, 4086 SDslu, 3832 SDs, 0 SdLazy, 6632 SolverSat, 6421 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8350 GetRequests, 2232 SyntacticMatches, 0 SemanticMatches, 6117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8250473 ImplicationChecksByTransitivity, 705.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1280occurred 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: 0.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 29098 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 1674 NumberOfCodeBlocks, 1582 NumberOfCodeBlocksAsserted, 131 NumberOfCheckSat, 1627 ConstructedInterpolants, 0 QuantifiedInterpolants, 159451 SizeOfPredicates, 101 NumberOfNonLiveVariables, 4363 ConjunctsInSsa, 310 ConjunctsInUnsatCore, 47 InterpolantComputations, 2 PerfectInterpolantSequences, 3562/8738 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