/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:02:58,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:02:58,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:02:58,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:02:58,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:02:58,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:02:58,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:02:58,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:02:58,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:02:58,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:02:58,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:02:58,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:02:58,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:02:58,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:02:58,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:02:58,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:02:58,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:02:58,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:02:58,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:02:58,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:02:58,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:02:58,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:02:58,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:02:58,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:02:58,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:02:58,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:02:58,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:02:58,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:02:58,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:02:58,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:02:58,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:02:58,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:02:58,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:02:58,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:02:58,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:02:58,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:02:58,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:02:58,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:02:58,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:02:58,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:02:58,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:02:58,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:02:58,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:02:58,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:02:58,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:02:58,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:02:58,850 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:02:58,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:02:58,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:02:58,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:02:58,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:02:58,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:02:58,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:02:58,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:02:58,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:02:58,852 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:02:58,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:02:58,853 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:02:58,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:02:58,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:02:58,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:02:58,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:02:58,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:02:58,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:02:58,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:02:58,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:02:58,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:02:58,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:02:58,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:02:58,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:02:58,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:02:59,141 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:02:59,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:02:59,157 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:02:59,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:02:59,159 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:02:59,160 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-04-17 22:02:59,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e3c3ae5/9daf9b35c86642fda16806b2480d8c58/FLAG0acbb2e4f [2020-04-17 22:02:59,785 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:02:59,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-04-17 22:02:59,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e3c3ae5/9daf9b35c86642fda16806b2480d8c58/FLAG0acbb2e4f [2020-04-17 22:03:00,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e3c3ae5/9daf9b35c86642fda16806b2480d8c58 [2020-04-17 22:03:00,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:03:00,097 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:03:00,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:03:00,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:03:00,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:03:00,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:03:00" (1/1) ... [2020-04-17 22:03:00,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c86ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00, skipping insertion in model container [2020-04-17 22:03:00,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:03:00" (1/1) ... [2020-04-17 22:03:00,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:03:00,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:03:00,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:03:00,695 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:03:00,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:03:00,851 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:03:00,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00 WrapperNode [2020-04-17 22:03:00,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:03:00,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:03:00,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:03:00,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:03:00,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00" (1/1) ... [2020-04-17 22:03:00,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00" (1/1) ... [2020-04-17 22:03:00,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:03:00,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:03:00,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:03:00,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:03:00,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00" (1/1) ... [2020-04-17 22:03:00,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00" (1/1) ... [2020-04-17 22:03:00,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00" (1/1) ... [2020-04-17 22:03:00,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00" (1/1) ... [2020-04-17 22:03:00,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00" (1/1) ... [2020-04-17 22:03:00,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00" (1/1) ... [2020-04-17 22:03:00,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00" (1/1) ... [2020-04-17 22:03:00,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:03:00,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:03:00,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:03:00,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:03:00,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00" (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 [2020-04-17 22:03:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:03:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:03:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:03:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:03:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:03:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:03:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:03:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:03:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:03:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:03:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:03:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:03:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:03:01,002 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:03:01,409 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:03:01,409 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:03:01,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:03:01 BoogieIcfgContainer [2020-04-17 22:03:01,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:03:01,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:03:01,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:03:01,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:03:01,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:03:00" (1/3) ... [2020-04-17 22:03:01,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367a139e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:03:01, skipping insertion in model container [2020-04-17 22:03:01,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:00" (2/3) ... [2020-04-17 22:03:01,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367a139e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:03:01, skipping insertion in model container [2020-04-17 22:03:01,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:03:01" (3/3) ... [2020-04-17 22:03:01,424 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-04-17 22:03:01,436 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:03:01,436 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:03:01,443 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:03:01,444 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:03:01,478 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,478 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,479 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,480 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,480 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,480 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,481 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,481 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,482 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,482 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,483 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,483 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,484 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,484 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,485 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,485 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,485 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,486 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,493 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,493 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,494 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,494 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,513 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,516 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,516 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,516 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,532 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,533 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,534 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,534 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:01,549 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:03:01,572 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:03:01,572 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:03:01,572 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:03:01,573 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:03:01,573 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:03:01,573 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:03:01,573 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:03:01,573 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:03:01,591 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-17 22:03:01,593 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 22:03:01,641 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 22:03:01,641 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:03:01,647 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:03:01,650 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 22:03:01,671 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 22:03:01,671 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:03:01,672 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:03:01,674 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:03:01,675 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:03:03,251 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-17 22:03:03,368 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-17 22:03:03,368 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 22:03:03,373 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 22:03:03,410 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 22:03:03,412 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 22:03:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:03:03,422 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:03,423 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:03,423 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:03,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:03,433 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-17 22:03:03,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:03,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093972247] [2020-04-17 22:03:03,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:03,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093972247] [2020-04-17 22:03:03,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:03,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:03:03,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128256978] [2020-04-17 22:03:03,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:03:03,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:03,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:03:03,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:03:03,694 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 22:03:03,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:03,745 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 22:03:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:03:03,747 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 22:03:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:03,791 INFO L225 Difference]: With dead ends: 362 [2020-04-17 22:03:03,791 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 22:03:03,793 INFO L678 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 [2020-04-17 22:03:03,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 22:03:03,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 22:03:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 22:03:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 22:03:03,875 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 22:03:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:03,876 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 22:03:03,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:03:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 22:03:03,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:03:03,878 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:03,878 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:03,878 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:03,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:03,879 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-17 22:03:03,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:03,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568435662] [2020-04-17 22:03:03,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:04,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568435662] [2020-04-17 22:03:04,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:04,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:03:04,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723722005] [2020-04-17 22:03:04,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:03:04,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:04,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:03:04,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:03:04,017 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-17 22:03:04,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:04,050 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-17 22:03:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:03:04,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 22:03:04,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:04,054 INFO L225 Difference]: With dead ends: 330 [2020-04-17 22:03:04,054 INFO L226 Difference]: Without dead ends: 266 [2020-04-17 22:03:04,055 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:03:04,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-17 22:03:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-17 22:03:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-17 22:03:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-17 22:03:04,078 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-17 22:03:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:04,078 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-17 22:03:04,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:03:04,078 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-17 22:03:04,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:03:04,080 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:04,080 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:04,080 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:04,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:04,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-04-17 22:03:04,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:04,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754056183] [2020-04-17 22:03:04,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:04,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754056183] [2020-04-17 22:03:04,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:04,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:03:04,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270944972] [2020-04-17 22:03:04,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:03:04,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:04,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:03:04,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:03:04,197 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-04-17 22:03:04,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:04,269 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-04-17 22:03:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:03:04,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-17 22:03:04,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:04,275 INFO L225 Difference]: With dead ends: 290 [2020-04-17 22:03:04,275 INFO L226 Difference]: Without dead ends: 242 [2020-04-17 22:03:04,275 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:03:04,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-04-17 22:03:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-04-17 22:03:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-04-17 22:03:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-04-17 22:03:04,290 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-04-17 22:03:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:04,290 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-04-17 22:03:04,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:03:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-04-17 22:03:04,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:03:04,292 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:04,292 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:04,293 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:04,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:04,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-04-17 22:03:04,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:04,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082993447] [2020-04-17 22:03:04,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:04,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082993447] [2020-04-17 22:03:04,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:04,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:03:04,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468531289] [2020-04-17 22:03:04,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:03:04,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:04,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:03:04,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:03:04,364 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-04-17 22:03:04,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:04,407 INFO L93 Difference]: Finished difference Result 290 states and 777 transitions. [2020-04-17 22:03:04,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:03:04,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-17 22:03:04,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:04,409 INFO L225 Difference]: With dead ends: 290 [2020-04-17 22:03:04,409 INFO L226 Difference]: Without dead ends: 158 [2020-04-17 22:03:04,410 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:03:04,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-17 22:03:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-17 22:03:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-17 22:03:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 394 transitions. [2020-04-17 22:03:04,417 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 394 transitions. Word has length 11 [2020-04-17 22:03:04,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:04,418 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 394 transitions. [2020-04-17 22:03:04,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:03:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 394 transitions. [2020-04-17 22:03:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:03:04,420 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:04,420 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:04,420 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:04,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:04,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1491329578, now seen corresponding path program 1 times [2020-04-17 22:03:04,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:04,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845622849] [2020-04-17 22:03:04,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:04,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845622849] [2020-04-17 22:03:04,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:04,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:03:04,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138873666] [2020-04-17 22:03:04,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:03:04,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:04,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:03:04,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:03:04,520 INFO L87 Difference]: Start difference. First operand 158 states and 394 transitions. Second operand 5 states. [2020-04-17 22:03:04,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:04,579 INFO L93 Difference]: Finished difference Result 188 states and 459 transitions. [2020-04-17 22:03:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:03:04,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 22:03:04,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:04,581 INFO L225 Difference]: With dead ends: 188 [2020-04-17 22:03:04,581 INFO L226 Difference]: Without dead ends: 80 [2020-04-17 22:03:04,581 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:03:04,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-17 22:03:04,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-17 22:03:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-17 22:03:04,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-04-17 22:03:04,594 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 13 [2020-04-17 22:03:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:04,594 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-04-17 22:03:04,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:03:04,595 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-04-17 22:03:04,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:03:04,600 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:04,600 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:04,600 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:04,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:04,600 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-04-17 22:03:04,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:04,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209772389] [2020-04-17 22:03:04,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:04,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:04,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209772389] [2020-04-17 22:03:04,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:04,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:03:04,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336956705] [2020-04-17 22:03:04,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:03:04,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:04,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:03:04,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:03:04,696 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-04-17 22:03:04,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:04,742 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-04-17 22:03:04,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:03:04,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 22:03:04,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:04,744 INFO L225 Difference]: With dead ends: 91 [2020-04-17 22:03:04,744 INFO L226 Difference]: Without dead ends: 69 [2020-04-17 22:03:04,744 INFO L678 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 [2020-04-17 22:03:04,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-04-17 22:03:04,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-04-17 22:03:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-04-17 22:03:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-04-17 22:03:04,748 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-04-17 22:03:04,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:04,748 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-04-17 22:03:04,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:03:04,749 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-04-17 22:03:04,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:03:04,753 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:04,753 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:04,755 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:04,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:04,755 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-04-17 22:03:04,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:04,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791120343] [2020-04-17 22:03:04,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:04,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791120343] [2020-04-17 22:03:04,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:04,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:03:04,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884248842] [2020-04-17 22:03:04,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:03:04,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:04,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:03:04,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:03:04,874 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-04-17 22:03:04,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:04,922 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-04-17 22:03:04,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:03:04,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:03:04,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:04,923 INFO L225 Difference]: With dead ends: 65 [2020-04-17 22:03:04,923 INFO L226 Difference]: Without dead ends: 50 [2020-04-17 22:03:04,923 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:03:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-04-17 22:03:04,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-04-17 22:03:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-04-17 22:03:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-04-17 22:03:04,927 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-04-17 22:03:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:04,927 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-04-17 22:03:04,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:03:04,927 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-04-17 22:03:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:03:04,928 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:04,928 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:04,928 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:04,929 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-04-17 22:03:04,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:04,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210230574] [2020-04-17 22:03:04,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:04,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210230574] [2020-04-17 22:03:04,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:04,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 22:03:04,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062081843] [2020-04-17 22:03:04,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:03:04,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:04,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:03:04,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:03:04,990 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-04-17 22:03:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:05,036 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-04-17 22:03:05,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:03:05,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-04-17 22:03:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:05,038 INFO L225 Difference]: With dead ends: 43 [2020-04-17 22:03:05,038 INFO L226 Difference]: Without dead ends: 37 [2020-04-17 22:03:05,039 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:03:05,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-04-17 22:03:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-04-17 22:03:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-04-17 22:03:05,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-04-17 22:03:05,041 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-04-17 22:03:05,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:05,041 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-04-17 22:03:05,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:03:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-04-17 22:03:05,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:03:05,042 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:05,042 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:05,042 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:05,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:05,043 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-04-17 22:03:05,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:05,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689526235] [2020-04-17 22:03:05,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:05,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689526235] [2020-04-17 22:03:05,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:05,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:03:05,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106977988] [2020-04-17 22:03:05,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:03:05,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:05,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:03:05,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:03:05,128 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-04-17 22:03:05,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:05,160 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-04-17 22:03:05,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:03:05,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 22:03:05,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:05,161 INFO L225 Difference]: With dead ends: 36 [2020-04-17 22:03:05,161 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:03:05,162 INFO L678 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 [2020-04-17 22:03:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:03:05,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:03:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:03:05,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:03:05,163 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-17 22:03:05,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:05,163 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:03:05,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:03:05,163 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:03:05,163 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:03:05,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:03:05 BasicIcfg [2020-04-17 22:03:05,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:03:05,170 INFO L168 Benchmark]: Toolchain (without parser) took 5087.35 ms. Allocated memory was 136.3 MB in the beginning and 251.7 MB in the end (delta: 115.3 MB). Free memory was 98.1 MB in the beginning and 173.8 MB in the end (delta: -75.8 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:03:05,172 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.3 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 22:03:05,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.36 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 96.4 MB in the beginning and 157.4 MB in the end (delta: -61.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:03:05,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.94 ms. Allocated memory is still 200.8 MB. Free memory was 157.4 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:03:05,180 INFO L168 Benchmark]: Boogie Preprocessor took 26.58 ms. Allocated memory is still 200.8 MB. Free memory was 155.4 MB in the beginning and 153.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:03:05,181 INFO L168 Benchmark]: RCFGBuilder took 481.80 ms. Allocated memory is still 200.8 MB. Free memory was 153.3 MB in the beginning and 131.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-17 22:03:05,183 INFO L168 Benchmark]: TraceAbstraction took 3752.54 ms. Allocated memory was 200.8 MB in the beginning and 251.7 MB in the end (delta: 50.9 MB). Free memory was 131.5 MB in the beginning and 173.8 MB in the end (delta: -42.3 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:03:05,195 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.3 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 753.36 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 96.4 MB in the beginning and 157.4 MB in the end (delta: -61.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.94 ms. Allocated memory is still 200.8 MB. Free memory was 157.4 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.58 ms. Allocated memory is still 200.8 MB. Free memory was 155.4 MB in the beginning and 153.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.80 ms. Allocated memory is still 200.8 MB. Free memory was 153.3 MB in the beginning and 131.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3752.54 ms. Allocated memory was 200.8 MB in the beginning and 251.7 MB in the end (delta: 50.9 MB). Free memory was 131.5 MB in the beginning and 173.8 MB in the end (delta: -42.3 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 695 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 182 SDtfs, 193 SDslu, 285 SDs, 0 SdLazy, 137 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 4202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...