/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/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:33:09,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:33:09,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:33:09,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:33:09,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:33:09,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:33:09,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:33:09,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:33:09,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:33:09,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:33:09,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:33:09,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:33:09,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:33:09,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:33:09,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:33:09,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:33:09,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:33:09,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:33:09,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:33:09,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:33:09,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:33:09,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:33:09,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:33:09,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:33:09,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:33:09,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:33:09,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:33:09,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:33:09,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:33:09,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:33:09,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:33:09,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:33:09,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:33:09,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:33:09,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:33:09,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:33:09,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:33:09,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:33:09,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:33:09,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:33:09,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:33:09,529 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 19:33:09,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:33:09,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:33:09,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:33:09,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:33:09,554 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:33:09,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:33:09,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:33:09,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:33:09,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:33:09,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:33:09,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:33:09,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:33:09,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:33:09,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:33:09,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:33:09,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:33:09,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:33:09,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:33:09,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:33:09,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:33:09,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:33:09,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:33:09,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:33:09,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:33:09,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:33:09,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:33:09,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:33:09,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:33:09,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:33:09,559 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 19:33:09,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:33:09,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:33:09,897 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:33:09,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:33:09,899 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:33:09,900 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 19:33:09,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09586414c/2a93b8a706fc40fba675992613553ac2/FLAG6abff1cd9 [2020-10-12 19:33:10,532 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:33:10,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 19:33:10,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09586414c/2a93b8a706fc40fba675992613553ac2/FLAG6abff1cd9 [2020-10-12 19:33:10,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09586414c/2a93b8a706fc40fba675992613553ac2 [2020-10-12 19:33:10,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:33:10,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:33:10,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:33:10,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:33:10,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:33:10,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:33:10" (1/1) ... [2020-10-12 19:33:10,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d82a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:10, skipping insertion in model container [2020-10-12 19:33:10,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:33:10" (1/1) ... [2020-10-12 19:33:10,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:33:10,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:33:11,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:33:11,542 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:33:11,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:33:11,997 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:33:11,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:11 WrapperNode [2020-10-12 19:33:11,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:33:12,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:33:12,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:33:12,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:33:12,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:11" (1/1) ... [2020-10-12 19:33:12,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:11" (1/1) ... [2020-10-12 19:33:12,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:11" (1/1) ... [2020-10-12 19:33:12,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:11" (1/1) ... [2020-10-12 19:33:12,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:11" (1/1) ... [2020-10-12 19:33:12,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:11" (1/1) ... [2020-10-12 19:33:12,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:11" (1/1) ... [2020-10-12 19:33:12,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:33:12,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:33:12,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:33:12,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:33:12,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:11" (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 19:33:12,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:33:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:33:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:33:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:33:12,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:33:12,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:33:12,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:33:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:33:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:33:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:33:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:33:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:33:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:33:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:33:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:33:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:33:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:33:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:33:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:33:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:33:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:33:13,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:33:13,804 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:33:13,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:33:13 BoogieIcfgContainer [2020-10-12 19:33:13,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:33:13,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:33:13,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:33:13,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:33:13,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:33:10" (1/3) ... [2020-10-12 19:33:13,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756c991b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:33:13, skipping insertion in model container [2020-10-12 19:33:13,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:11" (2/3) ... [2020-10-12 19:33:13,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756c991b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:33:13, skipping insertion in model container [2020-10-12 19:33:13,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:33:13" (3/3) ... [2020-10-12 19:33:13,819 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 19:33:13,830 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:33:13,840 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-12 19:33:13,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-12 19:33:13,884 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:33:13,885 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:33:13,885 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:33:13,885 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:33:13,885 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:33:13,885 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:33:13,886 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:33:13,886 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:33:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states. [2020-10-12 19:33:13,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 19:33:13,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:13,934 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] [2020-10-12 19:33:13,937 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:33:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:13,944 INFO L82 PathProgramCache]: Analyzing trace with hash 2049464648, now seen corresponding path program 1 times [2020-10-12 19:33:13,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:13,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727438423] [2020-10-12 19:33:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:14,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:14,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:14,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:15,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:15,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:17,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:17,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:18,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:19,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:19,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 19:33:19,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:33:19,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:33:19,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:33:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 19:33:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 19:33:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:33:20,188 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:33:20,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:20,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:20,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:20,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:20,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:20,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 19:33:20,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:20,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:33:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:33:20,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:20,264 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 19:33:20,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727438423] [2020-10-12 19:33:20,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:20,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:33:20,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739408238] [2020-10-12 19:33:20,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:33:20,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:20,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:33:20,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:33:20,292 INFO L87 Difference]: Start difference. First operand 363 states. Second operand 9 states. [2020-10-12 19:33:20,708 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-12 19:33:24,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:24,338 INFO L93 Difference]: Finished difference Result 844 states and 1383 transitions. [2020-10-12 19:33:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:33:24,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-12 19:33:24,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:24,389 INFO L225 Difference]: With dead ends: 844 [2020-10-12 19:33:24,390 INFO L226 Difference]: Without dead ends: 678 [2020-10-12 19:33:24,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:33:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-10-12 19:33:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 390. [2020-10-12 19:33:24,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-10-12 19:33:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 486 transitions. [2020-10-12 19:33:24,547 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 486 transitions. Word has length 63 [2020-10-12 19:33:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:24,548 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 486 transitions. [2020-10-12 19:33:24,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:33:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 486 transitions. [2020-10-12 19:33:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 19:33:24,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:24,561 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] [2020-10-12 19:33:24,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:33:24,562 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:33:24,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:24,562 INFO L82 PathProgramCache]: Analyzing trace with hash 804624401, now seen corresponding path program 1 times [2020-10-12 19:33:24,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:24,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271321797] [2020-10-12 19:33:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:24,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:24,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:24,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:24,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:25,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:25,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:29,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:29,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 19:33:29,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:33:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:33:29,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:33:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:33:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 19:33:29,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:29,970 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:33:29,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:29,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:29,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:29,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:33:29,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:33:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:33:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:30,015 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 19:33:30,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271321797] [2020-10-12 19:33:30,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:30,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:33:30,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102624622] [2020-10-12 19:33:30,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:33:30,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:30,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:33:30,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:33:30,020 INFO L87 Difference]: Start difference. First operand 390 states and 486 transitions. Second operand 7 states. [2020-10-12 19:33:30,338 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-12 19:33:32,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:32,567 INFO L93 Difference]: Finished difference Result 1518 states and 2050 transitions. [2020-10-12 19:33:32,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:33:32,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-12 19:33:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:32,580 INFO L225 Difference]: With dead ends: 1518 [2020-10-12 19:33:32,580 INFO L226 Difference]: Without dead ends: 1268 [2020-10-12 19:33:32,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:33:32,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2020-10-12 19:33:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 655. [2020-10-12 19:33:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-10-12 19:33:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 894 transitions. [2020-10-12 19:33:32,639 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 894 transitions. Word has length 63 [2020-10-12 19:33:32,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:32,640 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 894 transitions. [2020-10-12 19:33:32,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:33:32,640 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 894 transitions. [2020-10-12 19:33:32,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:33:32,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:32,642 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] [2020-10-12 19:33:32,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:33:32,642 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:33:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:32,643 INFO L82 PathProgramCache]: Analyzing trace with hash 711211391, now seen corresponding path program 1 times [2020-10-12 19:33:32,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:32,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518634887] [2020-10-12 19:33:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:32,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:32,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:32,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:32,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:33,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:33,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:37,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:37,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:33:37,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:33:37,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:33:37,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:33:37,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:33:37,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 19:33:37,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:33:38,096 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:33:38,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:38,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:38,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:38,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:38,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:33:38,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:33:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:33:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:33:38,158 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 19:33:38,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518634887] [2020-10-12 19:33:38,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:38,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:33:38,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913186538] [2020-10-12 19:33:38,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:33:38,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:38,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:33:38,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:33:38,161 INFO L87 Difference]: Start difference. First operand 655 states and 894 transitions. Second operand 10 states. [2020-10-12 19:33:38,522 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-12 19:33:41,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:41,737 INFO L93 Difference]: Finished difference Result 3833 states and 5596 transitions. [2020-10-12 19:33:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:33:41,737 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-10-12 19:33:41,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:41,760 INFO L225 Difference]: With dead ends: 3833 [2020-10-12 19:33:41,761 INFO L226 Difference]: Without dead ends: 3360 [2020-10-12 19:33:41,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:33:41,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2020-10-12 19:33:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 858. [2020-10-12 19:33:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-10-12 19:33:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1208 transitions. [2020-10-12 19:33:41,844 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1208 transitions. Word has length 64 [2020-10-12 19:33:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:41,845 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 1208 transitions. [2020-10-12 19:33:41,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:33:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1208 transitions. [2020-10-12 19:33:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:33:41,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:41,853 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] [2020-10-12 19:33:41,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:33:41,854 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:33:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:41,854 INFO L82 PathProgramCache]: Analyzing trace with hash -141381272, now seen corresponding path program 1 times [2020-10-12 19:33:41,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:41,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265998907] [2020-10-12 19:33:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:41,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:42,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:42,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:42,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:42,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:42,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:46,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:46,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:33:46,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:33:46,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:33:46,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:33:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:33:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:33:46,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:47,525 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:33:47,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:47,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:47,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:47,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:47,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:47,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:33:47,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:33:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:33:47,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:47,581 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 19:33:47,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265998907] [2020-10-12 19:33:47,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:47,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:33:47,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801524540] [2020-10-12 19:33:47,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:33:47,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:47,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:33:47,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:33:47,584 INFO L87 Difference]: Start difference. First operand 858 states and 1208 transitions. Second operand 12 states. [2020-10-12 19:33:48,780 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 254 DAG size of output: 246 [2020-10-12 19:33:56,735 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-10-12 19:33:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:57,287 INFO L93 Difference]: Finished difference Result 6442 states and 9505 transitions. [2020-10-12 19:33:57,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 19:33:57,287 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-12 19:33:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:57,316 INFO L225 Difference]: With dead ends: 6442 [2020-10-12 19:33:57,316 INFO L226 Difference]: Without dead ends: 6220 [2020-10-12 19:33:57,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 19:33:57,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6220 states. [2020-10-12 19:33:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6220 to 864. [2020-10-12 19:33:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-10-12 19:33:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1215 transitions. [2020-10-12 19:33:57,438 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1215 transitions. Word has length 64 [2020-10-12 19:33:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:57,439 INFO L479 AbstractCegarLoop]: Abstraction has 864 states and 1215 transitions. [2020-10-12 19:33:57,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:33:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1215 transitions. [2020-10-12 19:33:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 19:33:57,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:57,440 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] [2020-10-12 19:33:57,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:33:57,441 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:33:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:57,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1206860702, now seen corresponding path program 1 times [2020-10-12 19:33:57,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:57,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405710945] [2020-10-12 19:33:57,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:57,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:57,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:58,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:58,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:58,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:58,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:59,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:59,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:59,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:00,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:00,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:01,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:01,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:01,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:02,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:02,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:02,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 19:34:02,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-12 19:34:02,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:34:02,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:34:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:34:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 19:34:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:02,978 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:34:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:03,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:03,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:03,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:03,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 19:34:03,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:34:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:34:03,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:03,089 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 19:34:03,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405710945] [2020-10-12 19:34:03,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:03,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:34:03,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995559701] [2020-10-12 19:34:03,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:34:03,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:03,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:34:03,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:34:03,095 INFO L87 Difference]: Start difference. First operand 864 states and 1215 transitions. Second operand 12 states. [2020-10-12 19:34:03,842 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 233 [2020-10-12 19:34:07,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:07,518 INFO L93 Difference]: Finished difference Result 3718 states and 5462 transitions. [2020-10-12 19:34:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 19:34:07,518 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-12 19:34:07,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:07,531 INFO L225 Difference]: With dead ends: 3718 [2020-10-12 19:34:07,532 INFO L226 Difference]: Without dead ends: 3133 [2020-10-12 19:34:07,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 19:34:07,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-10-12 19:34:07,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 948. [2020-10-12 19:34:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-10-12 19:34:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1349 transitions. [2020-10-12 19:34:07,688 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1349 transitions. Word has length 65 [2020-10-12 19:34:07,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:07,689 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1349 transitions. [2020-10-12 19:34:07,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:34:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1349 transitions. [2020-10-12 19:34:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 19:34:07,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:07,691 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] [2020-10-12 19:34:07,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:34:07,691 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:07,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:07,692 INFO L82 PathProgramCache]: Analyzing trace with hash 762904582, now seen corresponding path program 1 times [2020-10-12 19:34:07,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:07,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543839443] [2020-10-12 19:34:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:07,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:07,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:07,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:08,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:08,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:08,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:10,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:12,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:12,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 19:34:12,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:34:12,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:34:12,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:34:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:34:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 19:34:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:13,300 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:34:13,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:13,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:13,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:13,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:13,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:13,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:34:13,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:34:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:34:13,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:13,359 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 19:34:13,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543839443] [2020-10-12 19:34:13,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:13,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:34:13,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996095467] [2020-10-12 19:34:13,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:34:13,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:13,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:34:13,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:34:13,363 INFO L87 Difference]: Start difference. First operand 948 states and 1349 transitions. Second operand 12 states. [2020-10-12 19:34:13,777 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-12 19:34:16,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:16,654 INFO L93 Difference]: Finished difference Result 2879 states and 4213 transitions. [2020-10-12 19:34:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:34:16,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-12 19:34:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:16,665 INFO L225 Difference]: With dead ends: 2879 [2020-10-12 19:34:16,665 INFO L226 Difference]: Without dead ends: 2339 [2020-10-12 19:34:16,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:34:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2020-10-12 19:34:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 988. [2020-10-12 19:34:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-10-12 19:34:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1400 transitions. [2020-10-12 19:34:16,819 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1400 transitions. Word has length 65 [2020-10-12 19:34:16,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:16,821 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1400 transitions. [2020-10-12 19:34:16,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:34:16,821 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1400 transitions. [2020-10-12 19:34:16,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 19:34:16,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:16,823 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] [2020-10-12 19:34:16,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:34:16,823 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:16,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:16,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1897713082, now seen corresponding path program 1 times [2020-10-12 19:34:16,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:16,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263640243] [2020-10-12 19:34:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:16,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:16,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:16,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:17,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:21,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 19:34:21,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:34:21,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:34:21,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:21,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:34:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:34:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 19:34:21,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:22,585 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:34:22,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:22,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:22,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:22,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:22,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:22,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:34:22,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:34:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:34:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:22,633 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 19:34:22,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263640243] [2020-10-12 19:34:22,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:22,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:34:22,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139588625] [2020-10-12 19:34:22,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:34:22,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:22,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:34:22,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:34:22,636 INFO L87 Difference]: Start difference. First operand 988 states and 1400 transitions. Second operand 16 states. [2020-10-12 19:34:23,546 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 245 [2020-10-12 19:34:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:27,314 INFO L93 Difference]: Finished difference Result 2579 states and 3702 transitions. [2020-10-12 19:34:27,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:34:27,314 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-10-12 19:34:27,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:27,321 INFO L225 Difference]: With dead ends: 2579 [2020-10-12 19:34:27,321 INFO L226 Difference]: Without dead ends: 2089 [2020-10-12 19:34:27,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 19:34:27,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-10-12 19:34:27,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1009. [2020-10-12 19:34:27,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-12 19:34:27,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1431 transitions. [2020-10-12 19:34:27,488 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1431 transitions. Word has length 65 [2020-10-12 19:34:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:27,489 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1431 transitions. [2020-10-12 19:34:27,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:34:27,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1431 transitions. [2020-10-12 19:34:27,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 19:34:27,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:27,491 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] [2020-10-12 19:34:27,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:34:27,492 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:27,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:27,492 INFO L82 PathProgramCache]: Analyzing trace with hash 2012206053, now seen corresponding path program 1 times [2020-10-12 19:34:27,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:27,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40762145] [2020-10-12 19:34:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:27,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:27,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:28,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:28,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:32,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:32,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 19:34:32,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:34:32,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:34:32,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:34:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:34:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:34:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0