/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:52:35,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:52:35,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:52:35,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:52:35,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:52:35,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:52:35,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:52:35,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:52:35,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:52:35,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:52:35,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:52:35,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:52:35,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:52:35,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:52:35,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:52:35,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:52:35,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:52:35,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:52:35,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:52:35,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:52:35,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:52:35,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:52:35,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:52:35,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:52:35,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 22:52:35,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 22:52:35,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 22:52:35,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 22:52:35,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 22:52:35,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 22:52:35,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:52:35,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:52:35,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:52:35,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:52:35,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:52:35,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:52:35,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:52:35,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:52:35,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:52:35,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:52:35,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:52:35,516 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 [2020-10-05 22:52:35,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:52:35,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:52:35,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:52:35,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:52:35,566 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:52:35,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:52:35,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:52:35,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:52:35,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:52:35,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:52:35,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:52:35,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:52:35,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:52:35,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:52:35,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:52:35,568 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:52:35,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:52:35,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:52:35,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:52:35,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:52:35,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:52:35,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:52:35,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:52:35,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:52:35,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:52:35,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:52:35,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:52:35,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:52:35,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:52:35,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:52:35,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:52:35,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:52:35,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:52:35,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:52:35,891 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:52:35,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-05 22:52:35,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e97497e6/97ea4301b7d542b1b5333320d03cea81/FLAGcd5f47722 [2020-10-05 22:52:36,414 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:52:36,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-05 22:52:36,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e97497e6/97ea4301b7d542b1b5333320d03cea81/FLAGcd5f47722 [2020-10-05 22:52:36,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e97497e6/97ea4301b7d542b1b5333320d03cea81 [2020-10-05 22:52:36,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:52:36,782 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:52:36,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:52:36,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:52:36,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:52:36,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:52:36" (1/1) ... [2020-10-05 22:52:36,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27833b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:36, skipping insertion in model container [2020-10-05 22:52:36,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:52:36" (1/1) ... [2020-10-05 22:52:36,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:52:36,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:52:37,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:52:37,263 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:52:37,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:52:37,389 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:52:37,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:37 WrapperNode [2020-10-05 22:52:37,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:52:37,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:52:37,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:52:37,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:52:37,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:37" (1/1) ... [2020-10-05 22:52:37,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:37" (1/1) ... [2020-10-05 22:52:37,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:52:37,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:52:37,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:52:37,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:52:37,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:37" (1/1) ... [2020-10-05 22:52:37,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:37" (1/1) ... [2020-10-05 22:52:37,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:37" (1/1) ... [2020-10-05 22:52:37,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:37" (1/1) ... [2020-10-05 22:52:37,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:37" (1/1) ... [2020-10-05 22:52:37,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:37" (1/1) ... [2020-10-05 22:52:37,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:37" (1/1) ... [2020-10-05 22:52:37,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:52:37,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:52:37,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:52:37,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:52:37,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:37" (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 [2020-10-05 22:52:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:52:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:52:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:52:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:52:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:52:37,545 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:52:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:52:37,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:52:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:52:37,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:52:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:52:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:52:37,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:52:37,550 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:52:37,931 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:52:37,931 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:52:37,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:52:37 BoogieIcfgContainer [2020-10-05 22:52:37,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:52:37,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:52:37,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:52:37,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:52:37,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:52:36" (1/3) ... [2020-10-05 22:52:37,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8cd0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:52:37, skipping insertion in model container [2020-10-05 22:52:37,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:37" (2/3) ... [2020-10-05 22:52:37,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8cd0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:52:37, skipping insertion in model container [2020-10-05 22:52:37,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:52:37" (3/3) ... [2020-10-05 22:52:37,948 INFO L109 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-10-05 22:52:37,958 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:52:37,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:52:37,966 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:52:37,967 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:52:37,997 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:37,998 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:37,998 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:37,998 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:37,999 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:37,999 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,000 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,001 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,001 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,001 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,002 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,002 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,002 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,003 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,003 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,003 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,008 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,008 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,009 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,009 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,021 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,023 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,024 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,029 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,030 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,031 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:38,053 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 22:52:38,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:52:38,078 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:52:38,078 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:52:38,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:52:38,079 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:52:38,079 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:52:38,080 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:52:38,080 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:52:38,101 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-05 22:52:38,103 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-05 22:52:38,174 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-05 22:52:38,174 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:52:38,181 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 22:52:38,185 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-05 22:52:38,231 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-05 22:52:38,231 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:52:38,233 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 22:52:38,236 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-05 22:52:38,237 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:52:39,564 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2365 [2020-10-05 22:52:39,564 INFO L214 etLargeBlockEncoding]: Total number of compositions: 53 [2020-10-05 22:52:39,568 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-05 22:52:39,595 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-05 22:52:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-05 22:52:39,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:52:39,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:39,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:39,606 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:39,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:39,612 INFO L82 PathProgramCache]: Analyzing trace with hash -589225259, now seen corresponding path program 1 times [2020-10-05 22:52:39,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:39,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374006581] [2020-10-05 22:52:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:52:39,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374006581] [2020-10-05 22:52:39,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:39,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:52:39,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811539743] [2020-10-05 22:52:39,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-05 22:52:39,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:39,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-05 22:52:39,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 22:52:39,806 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-05 22:52:39,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:39,842 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-05 22:52:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-05 22:52:39,843 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-05 22:52:39,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:39,861 INFO L225 Difference]: With dead ends: 362 [2020-10-05 22:52:39,861 INFO L226 Difference]: Without dead ends: 298 [2020-10-05 22:52:39,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 22:52:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-05 22:52:39,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-05 22:52:39,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-05 22:52:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-05 22:52:39,941 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-05 22:52:39,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:39,942 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-05 22:52:39,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-05 22:52:39,942 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-05 22:52:39,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:52:39,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:39,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:39,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:52:39,945 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:39,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:39,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1086118353, now seen corresponding path program 1 times [2020-10-05 22:52:39,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:39,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116810256] [2020-10-05 22:52:39,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:52:40,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116810256] [2020-10-05 22:52:40,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:40,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:52:40,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468071339] [2020-10-05 22:52:40,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:52:40,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:40,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:52:40,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:52:40,059 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-10-05 22:52:40,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:40,080 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-10-05 22:52:40,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:52:40,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-05 22:52:40,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:40,086 INFO L225 Difference]: With dead ends: 217 [2020-10-05 22:52:40,086 INFO L226 Difference]: Without dead ends: 217 [2020-10-05 22:52:40,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:52:40,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-05 22:52:40,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-10-05 22:52:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-05 22:52:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-10-05 22:52:40,116 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-10-05 22:52:40,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:40,118 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-10-05 22:52:40,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:52:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-10-05 22:52:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:52:40,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:40,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:40,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:52:40,122 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:40,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:40,122 INFO L82 PathProgramCache]: Analyzing trace with hash -954674037, now seen corresponding path program 1 times [2020-10-05 22:52:40,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:40,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158865356] [2020-10-05 22:52:40,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:52:40,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158865356] [2020-10-05 22:52:40,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:40,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:52:40,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953182215] [2020-10-05 22:52:40,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:52:40,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:40,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:52:40,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:52:40,232 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-10-05 22:52:40,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:40,259 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-10-05 22:52:40,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:52:40,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-05 22:52:40,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:40,262 INFO L225 Difference]: With dead ends: 136 [2020-10-05 22:52:40,262 INFO L226 Difference]: Without dead ends: 136 [2020-10-05 22:52:40,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:52:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-05 22:52:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-05 22:52:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 22:52:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-10-05 22:52:40,271 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-10-05 22:52:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:40,272 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-10-05 22:52:40,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:52:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-10-05 22:52:40,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 22:52:40,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:40,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:40,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:52:40,275 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:40,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1044268816, now seen corresponding path program 1 times [2020-10-05 22:52:40,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:40,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744394496] [2020-10-05 22:52:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:52:40,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744394496] [2020-10-05 22:52:40,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:40,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:52:40,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233554371] [2020-10-05 22:52:40,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:52:40,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:40,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:52:40,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:52:40,370 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-10-05 22:52:40,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:40,405 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-10-05 22:52:40,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:52:40,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-05 22:52:40,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:40,407 INFO L225 Difference]: With dead ends: 109 [2020-10-05 22:52:40,407 INFO L226 Difference]: Without dead ends: 109 [2020-10-05 22:52:40,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:52:40,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-05 22:52:40,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-05 22:52:40,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-05 22:52:40,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-10-05 22:52:40,416 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-10-05 22:52:40,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:40,417 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-10-05 22:52:40,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:52:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-10-05 22:52:40,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 22:52:40,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:40,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:40,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:52:40,420 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:40,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:40,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1052552835, now seen corresponding path program 1 times [2020-10-05 22:52:40,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:40,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208697682] [2020-10-05 22:52:40,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:52:40,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208697682] [2020-10-05 22:52:40,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:40,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:52:40,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364161849] [2020-10-05 22:52:40,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:52:40,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:40,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:52:40,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:52:40,523 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-10-05 22:52:40,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:40,567 INFO L93 Difference]: Finished difference Result 174 states and 369 transitions. [2020-10-05 22:52:40,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:52:40,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-05 22:52:40,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:40,569 INFO L225 Difference]: With dead ends: 174 [2020-10-05 22:52:40,569 INFO L226 Difference]: Without dead ends: 136 [2020-10-05 22:52:40,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-05 22:52:40,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-05 22:52:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2020-10-05 22:52:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-05 22:52:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 239 transitions. [2020-10-05 22:52:40,576 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 239 transitions. Word has length 18 [2020-10-05 22:52:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:40,577 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 239 transitions. [2020-10-05 22:52:40,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:52:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 239 transitions. [2020-10-05 22:52:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 22:52:40,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:40,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:40,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:52:40,579 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:40,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:40,579 INFO L82 PathProgramCache]: Analyzing trace with hash 645557555, now seen corresponding path program 2 times [2020-10-05 22:52:40,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:40,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942338037] [2020-10-05 22:52:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:52:40,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942338037] [2020-10-05 22:52:40,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:40,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:52:40,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154687263] [2020-10-05 22:52:40,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:52:40,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:40,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:52:40,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:52:40,642 INFO L87 Difference]: Start difference. First operand 109 states and 239 transitions. Second operand 5 states. [2020-10-05 22:52:40,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:40,692 INFO L93 Difference]: Finished difference Result 176 states and 358 transitions. [2020-10-05 22:52:40,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:52:40,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-05 22:52:40,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:40,694 INFO L225 Difference]: With dead ends: 176 [2020-10-05 22:52:40,694 INFO L226 Difference]: Without dead ends: 124 [2020-10-05 22:52:40,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-05 22:52:40,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-05 22:52:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2020-10-05 22:52:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-05 22:52:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 232 transitions. [2020-10-05 22:52:40,700 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 232 transitions. Word has length 18 [2020-10-05 22:52:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:40,700 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 232 transitions. [2020-10-05 22:52:40,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:52:40,701 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 232 transitions. [2020-10-05 22:52:40,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 22:52:40,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:40,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:40,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:52:40,702 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:40,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:40,703 INFO L82 PathProgramCache]: Analyzing trace with hash -457536705, now seen corresponding path program 3 times [2020-10-05 22:52:40,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:40,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408677561] [2020-10-05 22:52:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:52:40,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408677561] [2020-10-05 22:52:40,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:40,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:52:40,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890874389] [2020-10-05 22:52:40,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:52:40,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:40,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:52:40,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:52:40,787 INFO L87 Difference]: Start difference. First operand 109 states and 232 transitions. Second operand 5 states. [2020-10-05 22:52:40,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:40,864 INFO L93 Difference]: Finished difference Result 175 states and 348 transitions. [2020-10-05 22:52:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:52:40,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-05 22:52:40,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:40,865 INFO L225 Difference]: With dead ends: 175 [2020-10-05 22:52:40,865 INFO L226 Difference]: Without dead ends: 55 [2020-10-05 22:52:40,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-05 22:52:40,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-05 22:52:40,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-05 22:52:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-05 22:52:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-05 22:52:40,869 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-10-05 22:52:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:40,869 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-05 22:52:40,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:52:40,869 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-05 22:52:40,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 22:52:40,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:40,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:40,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:52:40,871 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:40,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:40,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1271535879, now seen corresponding path program 4 times [2020-10-05 22:52:40,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:40,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405089493] [2020-10-05 22:52:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:52:40,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405089493] [2020-10-05 22:52:40,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:40,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:52:40,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475038192] [2020-10-05 22:52:40,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:52:40,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:40,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:52:40,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:52:40,914 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 4 states. [2020-10-05 22:52:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:40,927 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-10-05 22:52:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:52:40,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-05 22:52:40,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:40,928 INFO L225 Difference]: With dead ends: 54 [2020-10-05 22:52:40,928 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:52:40,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:52:40,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:52:40,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:52:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:52:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:52:40,929 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-05 22:52:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:40,929 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:52:40,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:52:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:52:40,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:52:40,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:52:40,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:52:40 BasicIcfg [2020-10-05 22:52:40,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:52:40,937 INFO L168 Benchmark]: Toolchain (without parser) took 4153.74 ms. Allocated memory was 139.5 MB in the beginning and 249.0 MB in the end (delta: 109.6 MB). Free memory was 100.2 MB in the beginning and 192.7 MB in the end (delta: -92.5 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-10-05 22:52:40,938 INFO L168 Benchmark]: CDTParser took 1.32 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 22:52:40,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.27 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.0 MB in the beginning and 156.5 MB in the end (delta: -56.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-05 22:52:40,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.10 ms. Allocated memory is still 201.3 MB. Free memory was 156.5 MB in the beginning and 153.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:52:40,940 INFO L168 Benchmark]: Boogie Preprocessor took 26.70 ms. Allocated memory is still 201.3 MB. Free memory was 153.5 MB in the beginning and 152.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 22:52:40,941 INFO L168 Benchmark]: RCFGBuilder took 466.37 ms. Allocated memory is still 201.3 MB. Free memory was 152.2 MB in the beginning and 129.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-05 22:52:40,942 INFO L168 Benchmark]: TraceAbstraction took 2998.74 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 129.1 MB in the beginning and 192.7 MB in the end (delta: -63.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-05 22:52:40,947 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.32 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 606.27 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.0 MB in the beginning and 156.5 MB in the end (delta: -56.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.10 ms. Allocated memory is still 201.3 MB. Free memory was 156.5 MB in the beginning and 153.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.70 ms. Allocated memory is still 201.3 MB. Free memory was 153.5 MB in the beginning and 152.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.37 ms. Allocated memory is still 201.3 MB. Free memory was 152.2 MB in the beginning and 129.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2998.74 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 129.1 MB in the beginning and 192.7 MB in the end (delta: -63.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 77 ProgramPointsBefore, 32 ProgramPointsAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 648 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2365 CheckedPairsTotal, 53 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 162 SDtfs, 105 SDslu, 267 SDs, 0 SdLazy, 91 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 42 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 3814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...