/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:06:08,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:06:08,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:06:08,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:06:08,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:06:08,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:06:08,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:06:08,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:06:08,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:06:08,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:06:08,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:06:08,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:06:08,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:06:08,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:06:08,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:06:08,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:06:08,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:06:08,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:06:08,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:06:08,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:06:08,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:06:08,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:06:08,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:06:08,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:06:08,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 23:06:08,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 23:06:08,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 23:06:08,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 23:06:08,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 23:06:08,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 23:06:08,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:06:08,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:06:08,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:06:08,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:06:08,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:06:08,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:06:08,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:06:08,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:06:08,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:06:08,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:06:08,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:06:08,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-21 23:06:08,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:06:08,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:06:08,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:06:08,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:06:08,860 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:06:08,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:06:08,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:06:08,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:06:08,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:06:08,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:06:08,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:06:08,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:06:08,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:06:08,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:06:08,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:06:08,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:06:08,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:06:08,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:06:08,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:06:08,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:06:08,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:06:08,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:06:08,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:06:08,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:06:08,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:06:08,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:06:08,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:06:08,869 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:06:08,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:06:09,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:06:09,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:06:09,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:06:09,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:06:09,197 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:06:09,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-10-21 23:06:09,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5244307d4/4ff0f1b45a3a4de8bb172cff1566ddba/FLAGe9b6c6134 [2020-10-21 23:06:09,748 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:06:09,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-10-21 23:06:09,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5244307d4/4ff0f1b45a3a4de8bb172cff1566ddba/FLAGe9b6c6134 [2020-10-21 23:06:10,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5244307d4/4ff0f1b45a3a4de8bb172cff1566ddba [2020-10-21 23:06:10,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:06:10,109 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:06:10,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:06:10,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:06:10,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:06:10,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:06:10" (1/1) ... [2020-10-21 23:06:10,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@721b7422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10, skipping insertion in model container [2020-10-21 23:06:10,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:06:10" (1/1) ... [2020-10-21 23:06:10,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:06:10,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:06:10,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:06:10,734 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:06:10,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:06:10,875 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:06:10,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10 WrapperNode [2020-10-21 23:06:10,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:06:10,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:06:10,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:06:10,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:06:10,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10" (1/1) ... [2020-10-21 23:06:10,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10" (1/1) ... [2020-10-21 23:06:10,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:06:10,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:06:10,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:06:10,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:06:10,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10" (1/1) ... [2020-10-21 23:06:10,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10" (1/1) ... [2020-10-21 23:06:10,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10" (1/1) ... [2020-10-21 23:06:10,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10" (1/1) ... [2020-10-21 23:06:10,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10" (1/1) ... [2020-10-21 23:06:10,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10" (1/1) ... [2020-10-21 23:06:10,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10" (1/1) ... [2020-10-21 23:06:10,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:06:10,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:06:10,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:06:10,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:06:10,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:06:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:06:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 23:06:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:06:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:06:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-21 23:06:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-21 23:06:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-21 23:06:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-21 23:06:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-21 23:06:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-21 23:06:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:06:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 23:06:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:06:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:06:11,049 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:06:11,468 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:06:11,468 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 23:06:11,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:06:11 BoogieIcfgContainer [2020-10-21 23:06:11,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:06:11,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:06:11,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:06:11,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:06:11,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:06:10" (1/3) ... [2020-10-21 23:06:11,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51943d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:06:11, skipping insertion in model container [2020-10-21 23:06:11,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:10" (2/3) ... [2020-10-21 23:06:11,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51943d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:06:11, skipping insertion in model container [2020-10-21 23:06:11,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:06:11" (3/3) ... [2020-10-21 23:06:11,483 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2020-10-21 23:06:11,497 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:06:11,497 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:06:11,514 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:06:11,516 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:06:11,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,565 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,566 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,566 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,568 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,568 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,568 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,569 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,571 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,571 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,572 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,572 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,579 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,590 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,592 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,592 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,596 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,596 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,596 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,597 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:11,602 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:06:11,620 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 23:06:11,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:06:11,647 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:06:11,647 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:06:11,647 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:06:11,648 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:06:11,649 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:06:11,649 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:06:11,649 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:06:11,672 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:06:11,673 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-21 23:06:11,677 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-21 23:06:11,680 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-21 23:06:11,765 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-21 23:06:11,765 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 23:06:11,773 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-21 23:06:11,777 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-21 23:06:13,365 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-21 23:06:13,762 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-21 23:06:13,863 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-10-21 23:06:13,863 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-10-21 23:06:13,870 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-21 23:06:13,896 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-21 23:06:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-21 23:06:13,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 23:06:13,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:13,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:13,908 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:13,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:13,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-10-21 23:06:13,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:13,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092309594] [2020-10-21 23:06:13,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:14,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092309594] [2020-10-21 23:06:14,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:14,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:06:14,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255742868] [2020-10-21 23:06:14,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:06:14,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:14,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:06:14,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:14,222 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-21 23:06:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:14,263 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-21 23:06:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:06:14,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-21 23:06:14,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:14,282 INFO L225 Difference]: With dead ends: 282 [2020-10-21 23:06:14,282 INFO L226 Difference]: Without dead ends: 218 [2020-10-21 23:06:14,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:14,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-21 23:06:14,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-21 23:06:14,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-21 23:06:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-21 23:06:14,353 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-21 23:06:14,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:14,354 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-21 23:06:14,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:06:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-21 23:06:14,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:06:14,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:14,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:14,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:06:14,357 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:14,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:14,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1794997166, now seen corresponding path program 1 times [2020-10-21 23:06:14,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:14,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917985040] [2020-10-21 23:06:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:14,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917985040] [2020-10-21 23:06:14,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:14,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:06:14,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89456431] [2020-10-21 23:06:14,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:06:14,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:14,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:06:14,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:06:14,443 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-21 23:06:14,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:14,477 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-10-21 23:06:14,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:06:14,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-21 23:06:14,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:14,480 INFO L225 Difference]: With dead ends: 278 [2020-10-21 23:06:14,481 INFO L226 Difference]: Without dead ends: 182 [2020-10-21 23:06:14,481 INFO L677 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 [2020-10-21 23:06:14,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-21 23:06:14,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-10-21 23:06:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-21 23:06:14,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-10-21 23:06:14,499 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-10-21 23:06:14,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:14,499 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-10-21 23:06:14,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:06:14,499 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-10-21 23:06:14,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 23:06:14,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:14,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:14,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:06:14,501 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:14,502 INFO L82 PathProgramCache]: Analyzing trace with hash -918467642, now seen corresponding path program 1 times [2020-10-21 23:06:14,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:14,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314127587] [2020-10-21 23:06:14,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:14,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314127587] [2020-10-21 23:06:14,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:14,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:06:14,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483688800] [2020-10-21 23:06:14,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:06:14,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:14,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:06:14,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:06:14,610 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-10-21 23:06:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:14,655 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-10-21 23:06:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:06:14,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-21 23:06:14,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:14,657 INFO L225 Difference]: With dead ends: 218 [2020-10-21 23:06:14,658 INFO L226 Difference]: Without dead ends: 146 [2020-10-21 23:06:14,658 INFO L677 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 [2020-10-21 23:06:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-21 23:06:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-21 23:06:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-21 23:06:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-21 23:06:14,671 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-10-21 23:06:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:14,671 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-21 23:06:14,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:06:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-21 23:06:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 23:06:14,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:14,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:14,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:06:14,673 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:14,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:14,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061484, now seen corresponding path program 1 times [2020-10-21 23:06:14,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:14,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095288462] [2020-10-21 23:06:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:14,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095288462] [2020-10-21 23:06:14,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:14,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:06:14,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567672027] [2020-10-21 23:06:14,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:06:14,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:14,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:06:14,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:14,739 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-21 23:06:14,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:14,749 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-10-21 23:06:14,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:06:14,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-21 23:06:14,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:14,751 INFO L225 Difference]: With dead ends: 144 [2020-10-21 23:06:14,752 INFO L226 Difference]: Without dead ends: 144 [2020-10-21 23:06:14,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:14,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-21 23:06:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-21 23:06:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-21 23:06:14,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-21 23:06:14,773 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-10-21 23:06:14,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:14,773 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-21 23:06:14,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:06:14,774 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-21 23:06:14,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:06:14,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:14,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:14,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:06:14,776 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:14,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:14,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2140263678, now seen corresponding path program 1 times [2020-10-21 23:06:14,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:14,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571647381] [2020-10-21 23:06:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:14,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571647381] [2020-10-21 23:06:14,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:14,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:06:14,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461749419] [2020-10-21 23:06:14,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:06:14,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:14,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:06:14,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:14,810 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 3 states. [2020-10-21 23:06:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:14,821 INFO L93 Difference]: Finished difference Result 176 states and 415 transitions. [2020-10-21 23:06:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:06:14,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-21 23:06:14,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:14,823 INFO L225 Difference]: With dead ends: 176 [2020-10-21 23:06:14,823 INFO L226 Difference]: Without dead ends: 152 [2020-10-21 23:06:14,823 INFO L677 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 [2020-10-21 23:06:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-21 23:06:14,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 140. [2020-10-21 23:06:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-21 23:06:14,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 331 transitions. [2020-10-21 23:06:14,831 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 331 transitions. Word has length 12 [2020-10-21 23:06:14,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:14,831 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 331 transitions. [2020-10-21 23:06:14,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:06:14,831 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 331 transitions. [2020-10-21 23:06:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:06:14,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:14,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:14,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:06:14,833 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:14,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:14,834 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 1 times [2020-10-21 23:06:14,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:14,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930917153] [2020-10-21 23:06:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:14,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930917153] [2020-10-21 23:06:14,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:14,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:06:14,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483897066] [2020-10-21 23:06:14,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:06:14,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:14,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:06:14,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:06:14,894 INFO L87 Difference]: Start difference. First operand 140 states and 331 transitions. Second operand 4 states. [2020-10-21 23:06:14,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:14,930 INFO L93 Difference]: Finished difference Result 161 states and 350 transitions. [2020-10-21 23:06:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:06:14,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-21 23:06:14,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:14,932 INFO L225 Difference]: With dead ends: 161 [2020-10-21 23:06:14,932 INFO L226 Difference]: Without dead ends: 121 [2020-10-21 23:06:14,932 INFO L677 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 [2020-10-21 23:06:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-21 23:06:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-10-21 23:06:14,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-21 23:06:14,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 263 transitions. [2020-10-21 23:06:14,938 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 263 transitions. Word has length 12 [2020-10-21 23:06:14,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:14,938 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 263 transitions. [2020-10-21 23:06:14,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:06:14,939 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 263 transitions. [2020-10-21 23:06:14,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:06:14,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:14,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:14,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 23:06:14,940 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:14,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:14,941 INFO L82 PathProgramCache]: Analyzing trace with hash 596662620, now seen corresponding path program 1 times [2020-10-21 23:06:14,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:14,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112720344] [2020-10-21 23:06:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:14,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112720344] [2020-10-21 23:06:14,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:14,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:06:14,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108721671] [2020-10-21 23:06:14,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:06:15,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:15,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:06:15,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:06:15,000 INFO L87 Difference]: Start difference. First operand 121 states and 263 transitions. Second operand 5 states. [2020-10-21 23:06:15,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:15,047 INFO L93 Difference]: Finished difference Result 121 states and 245 transitions. [2020-10-21 23:06:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:06:15,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:06:15,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:15,049 INFO L225 Difference]: With dead ends: 121 [2020-10-21 23:06:15,049 INFO L226 Difference]: Without dead ends: 96 [2020-10-21 23:06:15,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:06:15,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-21 23:06:15,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-21 23:06:15,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-21 23:06:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-21 23:06:15,054 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 13 [2020-10-21 23:06:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:15,054 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-21 23:06:15,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:06:15,055 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-21 23:06:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:06:15,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:15,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:15,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 23:06:15,056 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:15,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:15,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-10-21 23:06:15,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:15,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043370587] [2020-10-21 23:06:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:15,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043370587] [2020-10-21 23:06:15,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:15,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:06:15,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108174125] [2020-10-21 23:06:15,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 23:06:15,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:15,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 23:06:15,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:06:15,116 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-10-21 23:06:15,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:15,179 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-21 23:06:15,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 23:06:15,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-21 23:06:15,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:15,182 INFO L225 Difference]: With dead ends: 92 [2020-10-21 23:06:15,182 INFO L226 Difference]: Without dead ends: 36 [2020-10-21 23:06:15,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:06:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-21 23:06:15,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-21 23:06:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-21 23:06:15,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-21 23:06:15,202 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-21 23:06:15,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:15,202 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-21 23:06:15,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 23:06:15,202 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-21 23:06:15,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:06:15,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:15,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:15,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 23:06:15,204 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-10-21 23:06:15,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:15,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759860724] [2020-10-21 23:06:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:15,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759860724] [2020-10-21 23:06:15,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:15,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:06:15,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933935174] [2020-10-21 23:06:15,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:06:15,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:15,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:06:15,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:06:15,275 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-21 23:06:15,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:15,289 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-21 23:06:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:06:15,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-21 23:06:15,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:15,290 INFO L225 Difference]: With dead ends: 35 [2020-10-21 23:06:15,290 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 23:06:15,290 INFO L677 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 [2020-10-21 23:06:15,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 23:06:15,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 23:06:15,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 23:06:15,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 23:06:15,291 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-21 23:06:15,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:15,292 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 23:06:15,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:06:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 23:06:15,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 23:06:15,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 23:06:15,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:06:15 BasicIcfg [2020-10-21 23:06:15,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:06:15,298 INFO L168 Benchmark]: Toolchain (without parser) took 5194.53 ms. Allocated memory was 142.1 MB in the beginning and 274.2 MB in the end (delta: 132.1 MB). Free memory was 101.9 MB in the beginning and 230.9 MB in the end (delta: -129.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:06:15,299 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 142.1 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-21 23:06:15,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.95 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 101.0 MB in the beginning and 157.2 MB in the end (delta: -56.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-10-21 23:06:15,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.65 ms. Allocated memory is still 203.4 MB. Free memory was 157.2 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:06:15,301 INFO L168 Benchmark]: Boogie Preprocessor took 30.25 ms. Allocated memory is still 203.4 MB. Free memory was 155.2 MB in the beginning and 153.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-21 23:06:15,302 INFO L168 Benchmark]: RCFGBuilder took 509.43 ms. Allocated memory is still 203.4 MB. Free memory was 153.3 MB in the beginning and 129.5 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-10-21 23:06:15,303 INFO L168 Benchmark]: TraceAbstraction took 3822.98 ms. Allocated memory was 203.4 MB in the beginning and 274.2 MB in the end (delta: 70.8 MB). Free memory was 128.9 MB in the beginning and 230.9 MB in the end (delta: -102.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-21 23:06:15,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 142.1 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 765.95 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 101.0 MB in the beginning and 157.2 MB in the end (delta: -56.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.65 ms. Allocated memory is still 203.4 MB. Free memory was 157.2 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.25 ms. Allocated memory is still 203.4 MB. Free memory was 155.2 MB in the beginning and 153.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 509.43 ms. Allocated memory is still 203.4 MB. Free memory was 153.3 MB in the beginning and 129.5 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3822.98 ms. Allocated memory was 203.4 MB in the beginning and 274.2 MB in the end (delta: 70.8 MB). Free memory was 128.9 MB in the beginning and 230.9 MB in the end (delta: -102.0 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 780 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 MoverChecksTotal - PositiveResult [Line: 17]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 169 SDtfs, 141 SDslu, 208 SDs, 0 SdLazy, 118 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3264 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...