/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:24:36,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:24:36,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:24:36,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:24:36,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:24:36,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:24:36,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:24:36,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:24:36,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:24:36,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:24:36,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:24:36,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:24:36,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:24:36,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:24:36,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:24:36,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:24:36,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:24:36,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:24:36,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:24:36,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:24:36,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:24:36,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:24:36,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:24:36,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:24:36,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:24:36,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:24:36,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:24:36,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:24:36,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:24:36,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:24:36,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:24:36,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:24:36,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:24:36,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:24:36,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:24:36,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:24:36,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:24:36,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:24:36,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:24:36,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:24:36,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:24:36,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:24:36,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:24:36,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:24:36,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:24:36,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:24:36,990 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:24:36,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:24:36,992 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:24:36,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:24:36,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:24:36,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:24:36,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:24:36,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:24:36,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:24:36,995 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:24:36,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:24:36,996 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:24:36,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:24:36,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:24:36,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:24:36,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:24:36,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:24:36,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:24:36,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:24:36,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:24:36,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:24:36,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:24:36,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:24:36,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:24:36,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:24:36,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:24:37,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:24:37,417 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:24:37,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:24:37,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:24:37,428 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:24:37,429 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label51.c [2020-10-12 15:24:37,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a756932df/ab39cef79843436e9cf207fb2e654c2a/FLAG4a1a98727 [2020-10-12 15:24:38,748 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:24:38,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label51.c [2020-10-12 15:24:38,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a756932df/ab39cef79843436e9cf207fb2e654c2a/FLAG4a1a98727 [2020-10-12 15:24:38,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a756932df/ab39cef79843436e9cf207fb2e654c2a [2020-10-12 15:24:38,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:24:38,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:24:38,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:24:38,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:24:38,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:24:38,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:24:38" (1/1) ... [2020-10-12 15:24:38,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632a6d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:38, skipping insertion in model container [2020-10-12 15:24:38,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:24:38" (1/1) ... [2020-10-12 15:24:39,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:24:39,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:24:41,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:24:41,634 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:24:42,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:24:42,761 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:24:42,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:42 WrapperNode [2020-10-12 15:24:42,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:24:42,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:24:42,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:24:42,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:24:42,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:42" (1/1) ... [2020-10-12 15:24:42,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:42" (1/1) ... [2020-10-12 15:24:42,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:42" (1/1) ... [2020-10-12 15:24:42,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:42" (1/1) ... [2020-10-12 15:24:43,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:42" (1/1) ... [2020-10-12 15:24:43,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:42" (1/1) ... [2020-10-12 15:24:43,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:42" (1/1) ... [2020-10-12 15:24:43,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:24:43,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:24:43,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:24:43,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:24:43,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 15:24:43,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:24:43,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:24:43,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 15:24:43,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 15:24:43,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 15:24:43,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 15:24:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 15:24:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 15:24:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:24:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 15:24:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 15:24:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 15:24:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 15:24:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 15:24:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 15:24:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:24:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:24:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:24:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:24:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:24:43,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:24:57,023 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:24:57,024 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:24:57,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:24:57 BoogieIcfgContainer [2020-10-12 15:24:57,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:24:57,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:24:57,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:24:57,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:24:57,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:24:38" (1/3) ... [2020-10-12 15:24:57,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397b4f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:24:57, skipping insertion in model container [2020-10-12 15:24:57,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:42" (2/3) ... [2020-10-12 15:24:57,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397b4f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:24:57, skipping insertion in model container [2020-10-12 15:24:57,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:24:57" (3/3) ... [2020-10-12 15:24:57,052 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label51.c [2020-10-12 15:24:57,063 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:24:57,073 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:24:57,088 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:24:57,121 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:24:57,122 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:24:57,122 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:24:57,122 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:24:57,122 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:24:57,122 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:24:57,122 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:24:57,123 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:24:57,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-12 15:24:57,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 15:24:57,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:24:57,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:24:57,183 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:24:57,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:24:57,190 INFO L82 PathProgramCache]: Analyzing trace with hash 578579204, now seen corresponding path program 1 times [2020-10-12 15:24:57,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:24:57,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145074315] [2020-10-12 15:24:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:24:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:24:57,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:24:57,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:24:57,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:24:57,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:24:57,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-12 15:24:57,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:24:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:24:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:24:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:24:57,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:24:57,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:24:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:24:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:24:57,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:24:57,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:24:57,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:24:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:24:57,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:24:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:24:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:24:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:24:57,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:24:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:24:57,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145074315] [2020-10-12 15:24:57,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:24:57,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:24:57,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855649395] [2020-10-12 15:24:57,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:24:57,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:24:57,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:24:57,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:24:57,852 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-12 15:25:24,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:25:24,872 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-12 15:25:24,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:25:24,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-12 15:25:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:25:24,919 INFO L225 Difference]: With dead ends: 5031 [2020-10-12 15:25:24,919 INFO L226 Difference]: Without dead ends: 3190 [2020-10-12 15:25:24,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:25:24,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-12 15:25:25,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-12 15:25:25,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-12 15:25:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-12 15:25:25,225 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 23 [2020-10-12 15:25:25,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:25:25,226 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-12 15:25:25,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:25:25,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-12 15:25:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 15:25:25,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:25:25,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:25:25,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:25:25,239 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:25:25,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:25:25,240 INFO L82 PathProgramCache]: Analyzing trace with hash 803657603, now seen corresponding path program 1 times [2020-10-12 15:25:25,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:25:25,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786618481] [2020-10-12 15:25:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:25:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:25,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:25,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:27,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:28,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:28,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 15:25:28,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:25:28,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2721 [2020-10-12 15:25:28,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:28,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:25:28,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:25:28,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 15:25:28,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 15:25:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:25:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:28,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:28,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:28,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:25:28,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:25:28,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:25:28,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:25:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:25:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:25:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:25:28,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:25:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:28,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:28,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:28,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:28,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:25:28,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:25:28,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-12 15:25:28,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:25:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:25:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:25:28,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:25:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:25:28,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786618481] [2020-10-12 15:25:28,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:25:28,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:25:28,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404595254] [2020-10-12 15:25:28,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:25:28,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:25:28,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:25:28,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:25:28,683 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 7 states. [2020-10-12 15:26:15,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:26:15,837 INFO L93 Difference]: Finished difference Result 9482 states and 14856 transitions. [2020-10-12 15:26:15,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:26:15,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-12 15:26:15,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:26:15,878 INFO L225 Difference]: With dead ends: 9482 [2020-10-12 15:26:15,878 INFO L226 Difference]: Without dead ends: 6304 [2020-10-12 15:26:15,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:26:15,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6304 states. [2020-10-12 15:26:16,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6304 to 6186. [2020-10-12 15:26:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6186 states. [2020-10-12 15:26:16,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6186 states to 6186 states and 8553 transitions. [2020-10-12 15:26:16,112 INFO L78 Accepts]: Start accepts. Automaton has 6186 states and 8553 transitions. Word has length 96 [2020-10-12 15:26:16,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:26:16,113 INFO L479 AbstractCegarLoop]: Abstraction has 6186 states and 8553 transitions. [2020-10-12 15:26:16,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:26:16,113 INFO L276 IsEmpty]: Start isEmpty. Operand 6186 states and 8553 transitions. [2020-10-12 15:26:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 15:26:16,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:26:16,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:26:16,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:26:16,124 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:26:16,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:26:16,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1022512321, now seen corresponding path program 1 times [2020-10-12 15:26:16,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:26:16,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829438643] [2020-10-12 15:26:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:26:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:16,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:16,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:17,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:17,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:17,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 15:26:17,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:26:17,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-10-12 15:26:17,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:26:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:26:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 15:26:17,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:26:17,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:26:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:17,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:17,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:26:17,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:26:17,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:26:17,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:26:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:26:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:26:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:26:17,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:26:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:17,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:17,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:17,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:26:17,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:26:17,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 15:26:17,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:26:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:26:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:26:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:26:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:26:17,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829438643] [2020-10-12 15:26:17,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:26:17,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:26:17,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669660560] [2020-10-12 15:26:17,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:26:17,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:26:17,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:26:17,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:26:17,735 INFO L87 Difference]: Start difference. First operand 6186 states and 8553 transitions. Second operand 7 states. [2020-10-12 15:27:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:27:30,401 INFO L93 Difference]: Finished difference Result 24211 states and 34805 transitions. [2020-10-12 15:27:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:27:30,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-12 15:27:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:27:30,570 INFO L225 Difference]: With dead ends: 24211 [2020-10-12 15:27:30,570 INFO L226 Difference]: Without dead ends: 18031 [2020-10-12 15:27:30,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:27:30,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18031 states. [2020-10-12 15:27:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18031 to 17809. [2020-10-12 15:27:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17809 states. [2020-10-12 15:27:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17809 states to 17809 states and 24515 transitions. [2020-10-12 15:27:31,396 INFO L78 Accepts]: Start accepts. Automaton has 17809 states and 24515 transitions. Word has length 96 [2020-10-12 15:27:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:27:31,398 INFO L479 AbstractCegarLoop]: Abstraction has 17809 states and 24515 transitions. [2020-10-12 15:27:31,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:27:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 17809 states and 24515 transitions. [2020-10-12 15:27:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 15:27:31,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:27:31,413 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:27:31,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:27:31,413 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:27:31,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:27:31,414 INFO L82 PathProgramCache]: Analyzing trace with hash 194005264, now seen corresponding path program 1 times [2020-10-12 15:27:31,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:27:31,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887651858] [2020-10-12 15:27:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:27:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:31,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:32,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:32,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:32,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 15:27:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:27:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-10-12 15:27:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:27:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:27:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 15:27:32,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:27:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:27:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:32,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:32,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:32,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:27:32,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:27:32,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:27:32,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:27:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:27:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:27:32,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:27:32,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:27:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:33,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:33,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:33,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 15:27:33,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:27:33,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-12 15:27:33,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:33,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:27:33,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:27:33,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 15:27:33,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:27:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:27:33,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887651858] [2020-10-12 15:27:33,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:27:33,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:27:33,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174434639] [2020-10-12 15:27:33,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:27:33,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:27:33,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:27:33,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:27:33,509 INFO L87 Difference]: Start difference. First operand 17809 states and 24515 transitions. Second operand 7 states.