/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:38:49,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:38:49,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:38:49,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:38:49,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:38:49,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:38:49,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:38:49,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:38:49,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:38:49,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:38:49,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:38:49,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:38:49,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:38:49,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:38:49,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:38:49,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:38:49,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:38:49,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:38:49,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:38:49,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:38:49,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:38:49,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:38:49,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:38:49,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:38:49,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:38:49,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:38:49,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:38:49,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:38:49,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:38:49,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:38:49,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:38:49,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:38:49,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:38:49,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:38:49,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:38:49,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:38:49,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:38:49,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:38:49,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:38:49,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:38:49,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:38:49,838 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 [2020-09-21 12:38:49,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:38:49,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:38:49,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:38:49,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:38:49,867 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:38:49,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:38:49,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:38:49,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:38:49,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:38:49,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:38:49,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:38:49,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:38:49,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:38:49,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:38:49,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:38:49,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:38:49,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:38:49,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:38:49,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:38:49,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:38:49,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:38:49,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:38:49,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:38:49,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:38:49,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:38:49,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:38:49,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:38:49,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:38:49,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:38:49,872 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:38:50,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:38:50,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:38:50,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:38:50,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:38:50,390 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:38:50,392 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 12:38:50,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee627d7a4/1b1a2e230a204173bfd6593d838eb11e/FLAG79361bd7e [2020-09-21 12:38:51,190 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:38:51,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 12:38:51,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee627d7a4/1b1a2e230a204173bfd6593d838eb11e/FLAG79361bd7e [2020-09-21 12:38:51,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee627d7a4/1b1a2e230a204173bfd6593d838eb11e [2020-09-21 12:38:51,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:38:51,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:38:51,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:38:51,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:38:51,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:38:51,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:38:51" (1/1) ... [2020-09-21 12:38:51,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2f3aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:51, skipping insertion in model container [2020-09-21 12:38:51,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:38:51" (1/1) ... [2020-09-21 12:38:51,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:38:51,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:38:52,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:38:52,284 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:38:52,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:38:52,740 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:38:52,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:52 WrapperNode [2020-09-21 12:38:52,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:38:52,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:38:52,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:38:52,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:38:52,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:52" (1/1) ... [2020-09-21 12:38:52,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:52" (1/1) ... [2020-09-21 12:38:52,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:52" (1/1) ... [2020-09-21 12:38:52,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:52" (1/1) ... [2020-09-21 12:38:52,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:52" (1/1) ... [2020-09-21 12:38:52,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:52" (1/1) ... [2020-09-21 12:38:52,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:52" (1/1) ... [2020-09-21 12:38:52,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:38:52,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:38:52,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:38:52,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:38:52,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:52" (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 [2020-09-21 12:38:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:38:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:38:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:38:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:38:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:38:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 12:38:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-21 12:38:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-21 12:38:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-21 12:38:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:38:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:38:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-21 12:38:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-21 12:38:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-21 12:38:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-21 12:38:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-21 12:38:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-21 12:38:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-21 12:38:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:38:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:38:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:38:54,815 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:38:54,815 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:38:54,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:38:54 BoogieIcfgContainer [2020-09-21 12:38:54,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:38:54,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:38:54,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:38:54,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:38:54,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:38:51" (1/3) ... [2020-09-21 12:38:54,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6bb156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:38:54, skipping insertion in model container [2020-09-21 12:38:54,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:52" (2/3) ... [2020-09-21 12:38:54,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6bb156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:38:54, skipping insertion in model container [2020-09-21 12:38:54,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:38:54" (3/3) ... [2020-09-21 12:38:54,836 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 12:38:54,848 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:38:54,860 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-21 12:38:54,884 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-21 12:38:54,919 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:38:54,919 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:38:54,919 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:38:54,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:38:54,920 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:38:54,920 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:38:54,920 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:38:54,920 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:38:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states. [2020-09-21 12:38:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-21 12:38:54,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:54,978 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, 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, 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] [2020-09-21 12:38:54,978 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:54,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2118038307, now seen corresponding path program 1 times [2020-09-21 12:38:54,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:54,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120493307] [2020-09-21 12:38:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:55,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:56,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:56,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:56,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:56,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-21 12:38:56,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:38:56,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:38:56,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:56,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:56,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-21 12:38:56,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:38:56,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:38:57,115 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:38:57,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:57,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:57,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:57,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:57,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:38:57,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:57,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120493307] [2020-09-21 12:38:57,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:57,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:38:57,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810795257] [2020-09-21 12:38:57,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:38:57,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:57,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:38:57,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:57,258 INFO L87 Difference]: Start difference. First operand 423 states. Second operand 4 states. [2020-09-21 12:38:57,635 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-21 12:39:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:00,858 INFO L93 Difference]: Finished difference Result 779 states and 1361 transitions. [2020-09-21 12:39:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:39:00,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-21 12:39:00,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:00,886 INFO L225 Difference]: With dead ends: 779 [2020-09-21 12:39:00,886 INFO L226 Difference]: Without dead ends: 610 [2020-09-21 12:39:00,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:00,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-09-21 12:39:00,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2020-09-21 12:39:00,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-09-21 12:39:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 893 transitions. [2020-09-21 12:39:00,998 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 893 transitions. Word has length 148 [2020-09-21 12:39:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:00,999 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 893 transitions. [2020-09-21 12:39:00,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 893 transitions. [2020-09-21 12:39:01,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-21 12:39:01,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:01,005 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, 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, 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] [2020-09-21 12:39:01,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:39:01,005 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:01,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:01,006 INFO L82 PathProgramCache]: Analyzing trace with hash 482868223, now seen corresponding path program 1 times [2020-09-21 12:39:01,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:01,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013093586] [2020-09-21 12:39:01,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:01,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:01,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:01,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:02,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:02,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:02,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-21 12:39:02,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:39:02,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-09-21 12:39:02,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:02,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:02,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-21 12:39:02,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-21 12:39:02,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:02,642 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:39:02,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:02,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:02,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:02,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:02,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:02,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:39:02,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:02,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:02,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013093586] [2020-09-21 12:39:02,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:02,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:02,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105176234] [2020-09-21 12:39:02,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:02,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:02,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:02,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:02,739 INFO L87 Difference]: Start difference. First operand 608 states and 893 transitions. Second operand 4 states. [2020-09-21 12:39:03,138 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-21 12:39:05,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:05,692 INFO L93 Difference]: Finished difference Result 1231 states and 1864 transitions. [2020-09-21 12:39:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:39:05,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-21 12:39:05,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:05,705 INFO L225 Difference]: With dead ends: 1231 [2020-09-21 12:39:05,705 INFO L226 Difference]: Without dead ends: 990 [2020-09-21 12:39:05,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-09-21 12:39:05,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2020-09-21 12:39:05,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-09-21 12:39:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1475 transitions. [2020-09-21 12:39:05,792 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1475 transitions. Word has length 148 [2020-09-21 12:39:05,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:05,794 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1475 transitions. [2020-09-21 12:39:05,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:05,794 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1475 transitions. [2020-09-21 12:39:05,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-21 12:39:05,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:05,804 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, 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, 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] [2020-09-21 12:39:05,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:39:05,805 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:05,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:05,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1233925245, now seen corresponding path program 1 times [2020-09-21 12:39:05,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:05,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751827569] [2020-09-21 12:39:05,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:06,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:06,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:06,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:06,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:07,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:07,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-21 12:39:07,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:39:07,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1121 [2020-09-21 12:39:07,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:39:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:39:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:39:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:07,459 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:39:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:07,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:07,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:07,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:07,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:07,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:39:07,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:07,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:07,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:07,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751827569] [2020-09-21 12:39:07,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:07,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:39:07,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818140997] [2020-09-21 12:39:07,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:39:07,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:07,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:39:07,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:07,561 INFO L87 Difference]: Start difference. First operand 988 states and 1475 transitions. Second operand 5 states. [2020-09-21 12:39:11,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:11,277 INFO L93 Difference]: Finished difference Result 2874 states and 4278 transitions. [2020-09-21 12:39:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:39:11,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-21 12:39:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:11,290 INFO L225 Difference]: With dead ends: 2874 [2020-09-21 12:39:11,290 INFO L226 Difference]: Without dead ends: 1903 [2020-09-21 12:39:11,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:39:11,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-09-21 12:39:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1882. [2020-09-21 12:39:11,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1882 states. [2020-09-21 12:39:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2789 transitions. [2020-09-21 12:39:11,379 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2789 transitions. Word has length 148 [2020-09-21 12:39:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:11,380 INFO L479 AbstractCegarLoop]: Abstraction has 1882 states and 2789 transitions. [2020-09-21 12:39:11,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:39:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2789 transitions. [2020-09-21 12:39:11,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-21 12:39:11,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:11,384 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, 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, 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] [2020-09-21 12:39:11,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:39:11,385 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:11,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:11,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1020675712, now seen corresponding path program 1 times [2020-09-21 12:39:11,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:11,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55360844] [2020-09-21 12:39:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:11,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:11,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:12,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:12,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:12,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-21 12:39:12,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:39:12,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1106 [2020-09-21 12:39:12,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:39:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:39:12,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:12,957 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:39:12,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:12,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:13,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:13,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:13,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:39:13,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:13,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:13,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:13,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:13,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:13,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55360844] [2020-09-21 12:39:13,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:13,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:13,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138335286] [2020-09-21 12:39:13,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:13,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:13,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:13,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:13,075 INFO L87 Difference]: Start difference. First operand 1882 states and 2789 transitions. Second operand 4 states. [2020-09-21 12:39:15,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:15,447 INFO L93 Difference]: Finished difference Result 5541 states and 8220 transitions. [2020-09-21 12:39:15,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:39:15,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-21 12:39:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:15,466 INFO L225 Difference]: With dead ends: 5541 [2020-09-21 12:39:15,466 INFO L226 Difference]: Without dead ends: 3743 [2020-09-21 12:39:15,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:15,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2020-09-21 12:39:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 1885. [2020-09-21 12:39:15,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-09-21 12:39:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2793 transitions. [2020-09-21 12:39:15,592 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2793 transitions. Word has length 149 [2020-09-21 12:39:15,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:15,593 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 2793 transitions. [2020-09-21 12:39:15,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2793 transitions. [2020-09-21 12:39:15,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-21 12:39:15,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:15,597 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, 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, 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] [2020-09-21 12:39:15,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:39:15,597 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:15,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:15,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1678355568, now seen corresponding path program 1 times [2020-09-21 12:39:15,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:15,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829115740] [2020-09-21 12:39:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:15,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:15,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:15,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:16,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:16,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:16,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:16,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:16,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:16,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-21 12:39:16,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:39:16,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-21 12:39:16,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:16,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:16,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:39:16,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-21 12:39:16,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:17,161 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:39:17,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:17,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:17,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:17,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:17,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:39:17,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:17,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829115740] [2020-09-21 12:39:17,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:17,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:17,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578358600] [2020-09-21 12:39:17,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:17,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:17,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:17,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:17,284 INFO L87 Difference]: Start difference. First operand 1885 states and 2793 transitions. Second operand 4 states. [2020-09-21 12:39:21,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:21,091 INFO L93 Difference]: Finished difference Result 5334 states and 7909 transitions. [2020-09-21 12:39:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:39:21,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-21 12:39:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:21,109 INFO L225 Difference]: With dead ends: 5334 [2020-09-21 12:39:21,109 INFO L226 Difference]: Without dead ends: 3584 [2020-09-21 12:39:21,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2020-09-21 12:39:21,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3560. [2020-09-21 12:39:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3560 states. [2020-09-21 12:39:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 5234 transitions. [2020-09-21 12:39:21,279 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 5234 transitions. Word has length 150 [2020-09-21 12:39:21,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:21,280 INFO L479 AbstractCegarLoop]: Abstraction has 3560 states and 5234 transitions. [2020-09-21 12:39:21,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 5234 transitions. [2020-09-21 12:39:21,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-21 12:39:21,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:21,286 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, 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, 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] [2020-09-21 12:39:21,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:39:21,287 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:21,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:21,287 INFO L82 PathProgramCache]: Analyzing trace with hash 157704973, now seen corresponding path program 1 times [2020-09-21 12:39:21,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:21,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673609720] [2020-09-21 12:39:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:21,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:21,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:22,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:22,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:22,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:22,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:22,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:22,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-21 12:39:22,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:39:22,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1110 [2020-09-21 12:39:22,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:39:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:39:22,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-21 12:39:22,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:23,042 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:39:23,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:23,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:23,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:23,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:23,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:23,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:39:23,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:23,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:23,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673609720] [2020-09-21 12:39:23,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:23,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:39:23,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407768925] [2020-09-21 12:39:23,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:39:23,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:23,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:39:23,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:23,147 INFO L87 Difference]: Start difference. First operand 3560 states and 5234 transitions. Second operand 5 states. [2020-09-21 12:39:26,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:26,654 INFO L93 Difference]: Finished difference Result 10420 states and 15269 transitions. [2020-09-21 12:39:26,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:39:26,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-21 12:39:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:26,682 INFO L225 Difference]: With dead ends: 10420 [2020-09-21 12:39:26,682 INFO L226 Difference]: Without dead ends: 6876 [2020-09-21 12:39:26,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:39:26,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6876 states. [2020-09-21 12:39:27,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6876 to 6826. [2020-09-21 12:39:27,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6826 states. [2020-09-21 12:39:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 9927 transitions. [2020-09-21 12:39:27,019 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 9927 transitions. Word has length 150 [2020-09-21 12:39:27,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:27,019 INFO L479 AbstractCegarLoop]: Abstraction has 6826 states and 9927 transitions. [2020-09-21 12:39:27,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:39:27,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 9927 transitions. [2020-09-21 12:39:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-21 12:39:27,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:27,036 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, 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, 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] [2020-09-21 12:39:27,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:39:27,037 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:27,038 INFO L82 PathProgramCache]: Analyzing trace with hash 566345479, now seen corresponding path program 1 times [2020-09-21 12:39:27,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:27,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379449763] [2020-09-21 12:39:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:27,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:27,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:27,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:27,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:28,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:28,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-21 12:39:28,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:39:28,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-09-21 12:39:28,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:28,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:28,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:39:28,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:39:28,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:28,464 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:39:28,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:28,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:28,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:28,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:28,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:28,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:39:28,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:28,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:28,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379449763] [2020-09-21 12:39:28,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:28,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:28,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588824128] [2020-09-21 12:39:28,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:28,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:28,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:28,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:28,544 INFO L87 Difference]: Start difference. First operand 6826 states and 9927 transitions. Second operand 4 states. [2020-09-21 12:39:32,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:32,867 INFO L93 Difference]: Finished difference Result 20405 states and 29671 transitions. [2020-09-21 12:39:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:39:32,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-09-21 12:39:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:32,928 INFO L225 Difference]: With dead ends: 20405 [2020-09-21 12:39:32,929 INFO L226 Difference]: Without dead ends: 13635 [2020-09-21 12:39:32,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13635 states. [2020-09-21 12:39:33,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13635 to 6828. [2020-09-21 12:39:33,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6828 states. [2020-09-21 12:39:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 9929 transitions. [2020-09-21 12:39:33,298 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 9929 transitions. Word has length 151 [2020-09-21 12:39:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:33,298 INFO L479 AbstractCegarLoop]: Abstraction has 6828 states and 9929 transitions. [2020-09-21 12:39:33,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 9929 transitions. [2020-09-21 12:39:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-21 12:39:33,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:33,309 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, 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, 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] [2020-09-21 12:39:33,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:39:33,309 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:33,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:33,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1370681956, now seen corresponding path program 1 times [2020-09-21 12:39:33,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:33,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672325909] [2020-09-21 12:39:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:33,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:33,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:33,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:34,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:34,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:34,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:34,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-21 12:39:34,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:39:34,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-21 12:39:34,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:34,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:34,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 12:39:34,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:39:34,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:34,769 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:39:34,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:34,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:34,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:34,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:34,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:34,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:39:34,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:34,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:34,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:34,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:34,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:34,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672325909] [2020-09-21 12:39:34,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:34,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:34,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151022834] [2020-09-21 12:39:34,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:34,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:34,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:34,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:34,869 INFO L87 Difference]: Start difference. First operand 6828 states and 9929 transitions. Second operand 4 states. [2020-09-21 12:39:39,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:39,110 INFO L93 Difference]: Finished difference Result 18088 states and 26248 transitions. [2020-09-21 12:39:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:39:39,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-09-21 12:39:39,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:39,142 INFO L225 Difference]: With dead ends: 18088 [2020-09-21 12:39:39,142 INFO L226 Difference]: Without dead ends: 11790 [2020-09-21 12:39:39,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11790 states. [2020-09-21 12:39:39,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11790 to 11740. [2020-09-21 12:39:39,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11740 states. [2020-09-21 12:39:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11740 states to 11740 states and 16832 transitions. [2020-09-21 12:39:39,728 INFO L78 Accepts]: Start accepts. Automaton has 11740 states and 16832 transitions. Word has length 152 [2020-09-21 12:39:39,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:39,729 INFO L479 AbstractCegarLoop]: Abstraction has 11740 states and 16832 transitions. [2020-09-21 12:39:39,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 11740 states and 16832 transitions. [2020-09-21 12:39:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-21 12:39:39,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:39,751 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, 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, 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] [2020-09-21 12:39:39,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:39:39,752 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:39,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:39,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1878113281, now seen corresponding path program 1 times [2020-09-21 12:39:39,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:39,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805281941] [2020-09-21 12:39:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:39,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:40,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:40,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:40,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:40,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:40,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:40,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:40,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-21 12:39:40,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:39:40,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-09-21 12:39:40,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:39:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:39:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:39:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:41,332 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:39:41,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:41,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:41,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:41,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:41,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:41,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:39:41,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:41,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:41,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805281941] [2020-09-21 12:39:41,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:41,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:39:41,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525955573] [2020-09-21 12:39:41,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:39:41,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:41,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:39:41,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:41,431 INFO L87 Difference]: Start difference. First operand 11740 states and 16832 transitions. Second operand 5 states.