/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:30:14,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:30:14,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:30:14,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:30:14,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:30:14,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:30:14,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:30:14,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:30:14,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:30:14,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:30:14,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:30:14,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:30:14,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:30:14,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:30:14,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:30:14,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:30:14,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:30:14,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:30:14,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:30:14,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:30:14,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:30:14,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:30:14,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:30:14,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:30:14,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:30:14,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:30:14,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:30:14,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:30:14,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:30:14,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:30:14,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:30:14,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:30:14,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:30:14,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:30:14,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:30:14,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:30:14,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:30:14,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:30:14,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:30:14,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:30:14,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:30:14,649 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 [2020-10-14 19:30:14,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:30:14,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:30:14,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:30:14,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:30:14,677 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:30:14,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:30:14,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:30:14,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:30:14,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:30:14,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:30:14,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:30:14,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:30:14,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:30:14,678 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:30:14,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:30:14,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:30:14,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:30:14,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:30:14,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:30:14,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:30:14,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:30:14,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:30:14,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:30:14,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:30:14,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:30:14,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:30:14,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:30:14,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:30:14,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:30:14,681 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:30:14,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:30:14,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:30:14,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:30:14,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:30:14,985 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:30:14,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label47.c [2020-10-14 19:30:15,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a7ee5960/bb35ce8d4a9545cf9d7d7e543a224651/FLAG3e511b95c [2020-10-14 19:30:15,749 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:30:15,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label47.c [2020-10-14 19:30:15,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a7ee5960/bb35ce8d4a9545cf9d7d7e543a224651/FLAG3e511b95c [2020-10-14 19:30:15,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a7ee5960/bb35ce8d4a9545cf9d7d7e543a224651 [2020-10-14 19:30:15,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:30:15,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:30:15,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:30:15,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:30:15,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:30:15,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:30:15" (1/1) ... [2020-10-14 19:30:15,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231f5d3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:15, skipping insertion in model container [2020-10-14 19:30:15,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:30:15" (1/1) ... [2020-10-14 19:30:15,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:30:16,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:30:17,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:30:17,570 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:30:18,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:30:18,426 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:30:18,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:18 WrapperNode [2020-10-14 19:30:18,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:30:18,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:30:18,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:30:18,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:30:18,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:18" (1/1) ... [2020-10-14 19:30:18,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:18" (1/1) ... [2020-10-14 19:30:18,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:18" (1/1) ... [2020-10-14 19:30:18,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:18" (1/1) ... [2020-10-14 19:30:18,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:18" (1/1) ... [2020-10-14 19:30:18,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:18" (1/1) ... [2020-10-14 19:30:18,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:18" (1/1) ... [2020-10-14 19:30:18,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:30:18,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:30:18,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:30:18,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:30:18,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:18" (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 [2020-10-14 19:30:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:30:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:30:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:30:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:30:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:30:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:30:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:30:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:30:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:30:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:30:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:30:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:30:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:30:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:30:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:30:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:30:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:30:22,984 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:30:22,984 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:30:22,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:30:22 BoogieIcfgContainer [2020-10-14 19:30:22,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:30:22,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:30:22,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:30:23,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:30:23,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:30:15" (1/3) ... [2020-10-14 19:30:23,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c3efe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:30:23, skipping insertion in model container [2020-10-14 19:30:23,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:18" (2/3) ... [2020-10-14 19:30:23,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c3efe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:30:23, skipping insertion in model container [2020-10-14 19:30:23,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:30:22" (3/3) ... [2020-10-14 19:30:23,006 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label47.c [2020-10-14 19:30:23,017 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:30:23,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:30:23,041 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:30:23,068 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:30:23,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:30:23,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:30:23,068 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:30:23,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:30:23,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:30:23,069 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:30:23,069 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:30:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:30:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2020-10-14 19:30:23,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:23,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:30:23,178 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:23,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:23,186 INFO L82 PathProgramCache]: Analyzing trace with hash 894905355, now seen corresponding path program 1 times [2020-10-14 19:30:23,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:23,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100458510] [2020-10-14 19:30:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:24,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:28,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:28,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 812 [2020-10-14 19:30:28,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:28,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 19:30:28,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:28,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:30:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:30:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 806 [2020-10-14 19:30:28,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:30:29,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:29,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:29,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:29,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:29,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:30:29,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:29,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:30:29,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:30:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:30:30,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100458510] [2020-10-14 19:30:30,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:30:30,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:30:30,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591234183] [2020-10-14 19:30:30,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:30:30,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:30:30,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:30:30,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:30:30,847 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 19:30:39,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:30:39,494 INFO L93 Difference]: Finished difference Result 2672 states and 5138 transitions. [2020-10-14 19:30:39,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:30:39,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 798 [2020-10-14 19:30:39,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:30:39,543 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:30:39,544 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:30:39,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:30:39,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:30:39,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687. [2020-10-14 19:30:39,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-10-14 19:30:39,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3015 transitions. [2020-10-14 19:30:39,741 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3015 transitions. Word has length 798 [2020-10-14 19:30:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:30:39,745 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 3015 transitions. [2020-10-14 19:30:39,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:30:39,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3015 transitions. [2020-10-14 19:30:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-14 19:30:39,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:39,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:30:39,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:30:39,775 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:39,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:39,776 INFO L82 PathProgramCache]: Analyzing trace with hash -206819236, now seen corresponding path program 1 times [2020-10-14 19:30:39,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:39,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867973618] [2020-10-14 19:30:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:42,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:45,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:45,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-14 19:30:45,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:30:45,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 19:30:45,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:45,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:45,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:30:45,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 19:30:45,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 803 [2020-10-14 19:30:45,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:45,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:45,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:45,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:45,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:45,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:45,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:30:45,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:45,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:45,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:30:45,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:30:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:45,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:45,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:45,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:30:45,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:45,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 19:30:45,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:45,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:30:45,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:47,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:30:47,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867973618] [2020-10-14 19:30:47,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:30:47,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:30:47,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268187003] [2020-10-14 19:30:47,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:30:47,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:30:47,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:30:47,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:30:47,506 INFO L87 Difference]: Start difference. First operand 1687 states and 3015 transitions. Second operand 5 states. [2020-10-14 19:30:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:30:55,974 INFO L93 Difference]: Finished difference Result 5073 states and 9123 transitions. [2020-10-14 19:30:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:30:55,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 817 [2020-10-14 19:30:55,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:30:55,999 INFO L225 Difference]: With dead ends: 5073 [2020-10-14 19:30:55,999 INFO L226 Difference]: Without dead ends: 3392 [2020-10-14 19:30:56,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:30:56,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2020-10-14 19:30:56,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 3388. [2020-10-14 19:30:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3388 states. [2020-10-14 19:30:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 5273 transitions. [2020-10-14 19:30:56,112 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 5273 transitions. Word has length 817 [2020-10-14 19:30:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:30:56,115 INFO L479 AbstractCegarLoop]: Abstraction has 3388 states and 5273 transitions. [2020-10-14 19:30:56,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:30:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 5273 transitions. [2020-10-14 19:30:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2020-10-14 19:30:56,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:56,143 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:30:56,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:30:56,144 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:56,144 INFO L82 PathProgramCache]: Analyzing trace with hash 362237914, now seen corresponding path program 1 times [2020-10-14 19:30:56,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:56,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361309182] [2020-10-14 19:30:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:56,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:56,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 880 [2020-10-14 19:31:01,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:31:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 19:31:01,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:31:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:31:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 19:31:01,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:31:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:01,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:31:01,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:01,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:31:01,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:31:01,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:01,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:31:01,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:01,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:31:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:31:01,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:31:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 19:31:01,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:31:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:31:01,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:31:01,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:01,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:31:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:31:01,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:31:01,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 19:31:01,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:31:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:31:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:31:01,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:31:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 19:31:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:31:01,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:01,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 19:31:01,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:31:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:31:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 19:31:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 19:31:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-14 19:31:02,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361309182] [2020-10-14 19:31:02,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:31:02,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:31:02,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451558187] [2020-10-14 19:31:02,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:31:02,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:31:02,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:31:02,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:31:02,242 INFO L87 Difference]: Start difference. First operand 3388 states and 5273 transitions. Second operand 8 states. [2020-10-14 19:31:12,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:31:12,888 INFO L93 Difference]: Finished difference Result 10262 states and 16206 transitions. [2020-10-14 19:31:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:31:12,891 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 860 [2020-10-14 19:31:12,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:31:12,929 INFO L225 Difference]: With dead ends: 10262 [2020-10-14 19:31:12,929 INFO L226 Difference]: Without dead ends: 6880 [2020-10-14 19:31:12,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:31:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6880 states. [2020-10-14 19:31:13,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6880 to 6849. [2020-10-14 19:31:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6849 states. [2020-10-14 19:31:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6849 states to 6849 states and 9635 transitions. [2020-10-14 19:31:13,154 INFO L78 Accepts]: Start accepts. Automaton has 6849 states and 9635 transitions. Word has length 860 [2020-10-14 19:31:13,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:31:13,155 INFO L479 AbstractCegarLoop]: Abstraction has 6849 states and 9635 transitions. [2020-10-14 19:31:13,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:31:13,155 INFO L276 IsEmpty]: Start isEmpty. Operand 6849 states and 9635 transitions. [2020-10-14 19:31:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2020-10-14 19:31:13,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:31:13,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:31:13,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:31:13,193 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:31:13,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:31:13,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2728729, now seen corresponding path program 1 times [2020-10-14 19:31:13,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:31:13,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80867640] [2020-10-14 19:31:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:31:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:13,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:13,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:18,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:18,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 909 [2020-10-14 19:31:18,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:31:18,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-14 19:31:18,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:18,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:18,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:31:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 19:31:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 593 [2020-10-14 19:31:18,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:20,196 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-10-14 19:31:20,369 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 33 [2020-10-14 19:31:20,568 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 34 [2020-10-14 19:31:20,874 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 40 [2020-10-14 19:31:21,141 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 48 [2020-10-14 19:31:21,477 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 43 [2020-10-14 19:31:21,826 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 42 [2020-10-14 19:31:21,988 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2020-10-14 19:31:22,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:31:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:22,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:22,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:31:22,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:22,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:31:22,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:22,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:22,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:22,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:31:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:22,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:22,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:22,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:31:22,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:22,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:31:22,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:22,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:22,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:22,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:22,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:22,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:22,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:31:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:22,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:22,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:22,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 19:31:22,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:22,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 19:31:22,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:22,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:22,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:31:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 19:31:22,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 19:31:26,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80867640] [2020-10-14 19:31:26,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:31:26,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:31:26,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802755648] [2020-10-14 19:31:26,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:31:26,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:31:26,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:31:26,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:31:26,331 INFO L87 Difference]: Start difference. First operand 6849 states and 9635 transitions. Second operand 17 states. [2020-10-14 19:31:27,488 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 19:31:27,905 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-10-14 19:31:28,469 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-14 19:31:29,542 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-14 19:31:31,120 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2020-10-14 19:31:31,797 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-10-14 19:31:44,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:31:44,515 INFO L93 Difference]: Finished difference Result 14282 states and 20121 transitions. [2020-10-14 19:31:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:31:44,516 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 891 [2020-10-14 19:31:44,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:31:44,551 INFO L225 Difference]: With dead ends: 14282 [2020-10-14 19:31:44,552 INFO L226 Difference]: Without dead ends: 7439 [2020-10-14 19:31:44,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:31:44,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7439 states. [2020-10-14 19:31:44,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7439 to 7435. [2020-10-14 19:31:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7435 states. [2020-10-14 19:31:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 10233 transitions. [2020-10-14 19:31:44,743 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 10233 transitions. Word has length 891 [2020-10-14 19:31:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:31:44,744 INFO L479 AbstractCegarLoop]: Abstraction has 7435 states and 10233 transitions. [2020-10-14 19:31:44,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:31:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 10233 transitions. [2020-10-14 19:31:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2020-10-14 19:31:44,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:31:44,772 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:31:44,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:31:44,773 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:31:44,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:31:44,774 INFO L82 PathProgramCache]: Analyzing trace with hash 376014224, now seen corresponding path program 1 times [2020-10-14 19:31:44,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:31:44,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143086619] [2020-10-14 19:31:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:31:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:44,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:44,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:49,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:49,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 958 [2020-10-14 19:31:49,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:31:49,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 19:31:49,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:49,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:31:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 19:31:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 19:31:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:50,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:31:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:50,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:50,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:31:50,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:50,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:31:50,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:50,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:50,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:50,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:31:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:50,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:50,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:31:50,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 19:31:50,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:50,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:31:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 19:31:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:50,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:31:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:50,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:50,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:50,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:31:50,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:50,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 19:31:50,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:50,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:50,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:31:50,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:31:50,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 19:31:50,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 19:31:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:50,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:50,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:50,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:31:50,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:50,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:31:50,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:50,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 19:31:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:50,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 182 proven. 27 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 19:31:50,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143086619] [2020-10-14 19:31:50,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:31:50,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:31:50,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787139711] [2020-10-14 19:31:50,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:31:50,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:31:50,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:31:50,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:31:50,856 INFO L87 Difference]: Start difference. First operand 7435 states and 10233 transitions. Second operand 7 states. [2020-10-14 19:32:01,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:32:01,401 INFO L93 Difference]: Finished difference Result 21825 states and 30933 transitions. [2020-10-14 19:32:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 19:32:01,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 938 [2020-10-14 19:32:01,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:32:01,466 INFO L225 Difference]: With dead ends: 21825 [2020-10-14 19:32:01,466 INFO L226 Difference]: Without dead ends: 14396 [2020-10-14 19:32:01,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:32:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14396 states. [2020-10-14 19:32:01,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14396 to 14392. [2020-10-14 19:32:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14392 states. [2020-10-14 19:32:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14392 states to 14392 states and 19808 transitions. [2020-10-14 19:32:01,815 INFO L78 Accepts]: Start accepts. Automaton has 14392 states and 19808 transitions. Word has length 938 [2020-10-14 19:32:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:32:01,816 INFO L479 AbstractCegarLoop]: Abstraction has 14392 states and 19808 transitions. [2020-10-14 19:32:01,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:32:01,816 INFO L276 IsEmpty]: Start isEmpty. Operand 14392 states and 19808 transitions. [2020-10-14 19:32:01,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2020-10-14 19:32:01,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:32:01,859 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:32:01,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:32:01,860 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:32:01,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:32:01,861 INFO L82 PathProgramCache]: Analyzing trace with hash -557716467, now seen corresponding path program 1 times [2020-10-14 19:32:01,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:32:01,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764590715] [2020-10-14 19:32:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:32:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:01,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:04,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:07,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:07,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1006 [2020-10-14 19:32:07,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:32:07,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-14 19:32:07,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:07,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:32:07,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-14 19:32:07,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 803 [2020-10-14 19:32:07,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:32:07,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:32:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:07,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:07,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:32:07,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:32:07,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:07,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:07,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:32:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:07,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:07,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:07,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:32:07,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:07,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:32:07,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:07,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:07,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:07,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:07,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:07,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:32:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:07,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:07,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:32:07,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 19:32:07,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:07,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:32:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:32:07,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-14 19:32:08,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764590715] [2020-10-14 19:32:08,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:32:08,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:32:08,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693103107] [2020-10-14 19:32:08,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:32:08,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:32:08,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:32:08,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:32:08,236 INFO L87 Difference]: Start difference. First operand 14392 states and 19808 transitions. Second operand 5 states. [2020-10-14 19:32:17,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:32:17,540 INFO L93 Difference]: Finished difference Result 35567 states and 50862 transitions. [2020-10-14 19:32:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:32:17,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 988 [2020-10-14 19:32:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:32:17,626 INFO L225 Difference]: With dead ends: 35567 [2020-10-14 19:32:17,626 INFO L226 Difference]: Without dead ends: 21181 [2020-10-14 19:32:17,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:32:17,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2020-10-14 19:32:18,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 21177. [2020-10-14 19:32:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21177 states. [2020-10-14 19:32:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21177 states to 21177 states and 28406 transitions. [2020-10-14 19:32:18,095 INFO L78 Accepts]: Start accepts. Automaton has 21177 states and 28406 transitions. Word has length 988 [2020-10-14 19:32:18,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:32:18,097 INFO L479 AbstractCegarLoop]: Abstraction has 21177 states and 28406 transitions. [2020-10-14 19:32:18,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:32:18,097 INFO L276 IsEmpty]: Start isEmpty. Operand 21177 states and 28406 transitions. [2020-10-14 19:32:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2020-10-14 19:32:18,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:32:18,170 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:32:18,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:32:18,171 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:32:18,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:32:18,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1057973427, now seen corresponding path program 1 times [2020-10-14 19:32:18,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:32:18,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739527310] [2020-10-14 19:32:18,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:32:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:18,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:18,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:18,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:23,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:23,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1024 [2020-10-14 19:32:23,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:32:23,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 19:32:23,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:23,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:32:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 19:32:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 19:32:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:23,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:32:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:23,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:23,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:32:23,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:23,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:32:23,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:23,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:23,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:32:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:23,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:23,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:32:23,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:23,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 19:32:23,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:23,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:32:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 19:32:23,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:23,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:32:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:23,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:23,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 19:32:23,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:23,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 19:32:23,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:23,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:23,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:32:23,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:32:23,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 19:32:23,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:23,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 19:32:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:23,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:23,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:32:23,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:23,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:32:23,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:23,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 19:32:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:23,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:23,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-14 19:32:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:23,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:23,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:23,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:32:23,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:32:23,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:23,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 19:32:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 247 proven. 39 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-14 19:32:24,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739527310] [2020-10-14 19:32:24,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:32:24,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:32:24,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257675485] [2020-10-14 19:32:24,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:32:24,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:32:24,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:32:24,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:32:24,069 INFO L87 Difference]: Start difference. First operand 21177 states and 28406 transitions. Second operand 7 states. [2020-10-14 19:32:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:32:39,781 INFO L93 Difference]: Finished difference Result 75548 states and 105511 transitions. [2020-10-14 19:32:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:32:39,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1002 [2020-10-14 19:32:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:32:39,977 INFO L225 Difference]: With dead ends: 75548 [2020-10-14 19:32:39,977 INFO L226 Difference]: Without dead ends: 50994 [2020-10-14 19:32:40,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:32:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50994 states. [2020-10-14 19:32:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50994 to 46777. [2020-10-14 19:32:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46777 states. [2020-10-14 19:32:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46777 states to 46777 states and 59853 transitions. [2020-10-14 19:32:40,985 INFO L78 Accepts]: Start accepts. Automaton has 46777 states and 59853 transitions. Word has length 1002 [2020-10-14 19:32:40,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:32:40,985 INFO L479 AbstractCegarLoop]: Abstraction has 46777 states and 59853 transitions. [2020-10-14 19:32:40,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:32:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 46777 states and 59853 transitions. [2020-10-14 19:32:41,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2020-10-14 19:32:41,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:32:41,070 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:32:41,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:32:41,070 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:32:41,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:32:41,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1445096076, now seen corresponding path program 1 times [2020-10-14 19:32:41,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:32:41,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709260422] [2020-10-14 19:32:41,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:32:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:46,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:46,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1036 [2020-10-14 19:32:46,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:32:46,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-14 19:32:46,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:46,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:32:46,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 19:32:46,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 19:32:46,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:46,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:32:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:46,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:46,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:46,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:32:46,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:46,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:32:46,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:46,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:32:46,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:32:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:46,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:46,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:46,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:32:46,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:46,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 19:32:46,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:46,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:32:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 19:32:46,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:46,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:32:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:46,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:46,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:46,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:32:46,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:46,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 19:32:46,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:46,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:32:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:32:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 19:32:46,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:46,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-14 19:32:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:46,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:46,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:32:46,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:32:46,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:46,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 19:32:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:46,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 260 proven. 27 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 19:32:47,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709260422] [2020-10-14 19:32:47,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:32:47,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:32:47,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533606854] [2020-10-14 19:32:47,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:32:47,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:32:47,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:32:47,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:32:47,256 INFO L87 Difference]: Start difference. First operand 46777 states and 59853 transitions. Second operand 7 states. [2020-10-14 19:32:57,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:32:57,304 INFO L93 Difference]: Finished difference Result 111499 states and 144884 transitions. [2020-10-14 19:32:57,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:32:57,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1016 [2020-10-14 19:32:57,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:32:57,539 INFO L225 Difference]: With dead ends: 111499 [2020-10-14 19:32:57,539 INFO L226 Difference]: Without dead ends: 64768 [2020-10-14 19:32:57,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:32:57,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64768 states. [2020-10-14 19:32:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64768 to 63047. [2020-10-14 19:32:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63047 states. [2020-10-14 19:32:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63047 states to 63047 states and 79570 transitions. [2020-10-14 19:32:58,783 INFO L78 Accepts]: Start accepts. Automaton has 63047 states and 79570 transitions. Word has length 1016 [2020-10-14 19:32:58,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:32:58,783 INFO L479 AbstractCegarLoop]: Abstraction has 63047 states and 79570 transitions. [2020-10-14 19:32:58,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:32:58,784 INFO L276 IsEmpty]: Start isEmpty. Operand 63047 states and 79570 transitions. [2020-10-14 19:32:58,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2020-10-14 19:32:58,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:32:58,912 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:32:58,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:32:58,912 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:32:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:32:58,913 INFO L82 PathProgramCache]: Analyzing trace with hash 972209833, now seen corresponding path program 1 times [2020-10-14 19:32:58,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:32:58,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669111108] [2020-10-14 19:32:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:32:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:59,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:04,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:04,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1103 [2020-10-14 19:33:04,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:33:04,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-14 19:33:04,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:04,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:04,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:33:04,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:33:04,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 19:33:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:04,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:33:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:04,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:04,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:33:04,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:04,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:33:04,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:04,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:04,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:33:04,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:04,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:33:04,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:04,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:33:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:04,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:04,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:04,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 19:33:04,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:33:04,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 19:33:04,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:04,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:04,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:33:04,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:04,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 19:33:04,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:04,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 19:33:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:04,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:04,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:04,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 19:33:04,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:04,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 19:33:04,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:04,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:33:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:33:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 19:33:04,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:04,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-14 19:33:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:04,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:04,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:04,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:33:04,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:04,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:33:04,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:04,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:04,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:33:04,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 19:33:04,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:33:04,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:04,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-10-14 19:33:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:04,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:04,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:04,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:33:04,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:04,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:33:04,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:04,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:04,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:33:04,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 19:33:04,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:33:04,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 341 proven. 86 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-14 19:33:05,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669111108] [2020-10-14 19:33:05,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:33:05,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:33:05,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215603629] [2020-10-14 19:33:05,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:33:05,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:33:05,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:33:05,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:33:05,267 INFO L87 Difference]: Start difference. First operand 63047 states and 79570 transitions. Second operand 7 states. [2020-10-14 19:33:16,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:33:16,349 INFO L93 Difference]: Finished difference Result 132524 states and 167871 transitions. [2020-10-14 19:33:16,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:33:16,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1081 [2020-10-14 19:33:16,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:33:16,568 INFO L225 Difference]: With dead ends: 132524 [2020-10-14 19:33:16,568 INFO L226 Difference]: Without dead ends: 69535 [2020-10-14 19:33:16,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:33:16,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69535 states. [2020-10-14 19:33:17,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69535 to 64447. [2020-10-14 19:33:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64447 states. [2020-10-14 19:33:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64447 states to 64447 states and 76995 transitions. [2020-10-14 19:33:17,635 INFO L78 Accepts]: Start accepts. Automaton has 64447 states and 76995 transitions. Word has length 1081 [2020-10-14 19:33:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:33:17,635 INFO L479 AbstractCegarLoop]: Abstraction has 64447 states and 76995 transitions. [2020-10-14 19:33:17,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:33:17,635 INFO L276 IsEmpty]: Start isEmpty. Operand 64447 states and 76995 transitions. [2020-10-14 19:33:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1195 [2020-10-14 19:33:17,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:33:17,696 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:33:17,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:33:17,697 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:33:17,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:33:17,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1836156979, now seen corresponding path program 1 times [2020-10-14 19:33:17,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:33:17,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640769517] [2020-10-14 19:33:17,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:33:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:17,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:17,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:18,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:21,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:22,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:22,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1218 [2020-10-14 19:33:22,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:33:22,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 19:33:22,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:22,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:33:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 411 [2020-10-14 19:33:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 679 [2020-10-14 19:33:22,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:25,142 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-14 19:33:25,301 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-14 19:33:25,477 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-14 19:33:25,625 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-14 19:33:25,803 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-14 19:33:25,982 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-14 19:33:26,154 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 44 [2020-10-14 19:33:26,342 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-10-14 19:33:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:33:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:26,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:26,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:33:26,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:26,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:33:26,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:26,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:33:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:26,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:33:26,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:26,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:33:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:26,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:26,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:26,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:33:26,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:33:26,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:26,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:33:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:33:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:26,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:33:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:26,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:26,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:26,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 19:33:26,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:33:26,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:26,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:33:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:26,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:33:26,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:26,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 19:33:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:26,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:26,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 19:33:26,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:26,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:33:26,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:26,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:26,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:33:26,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:33:26,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:33:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-14 19:33:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:27,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:27,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 19:33:27,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 19:33:27,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:27,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:33:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 19:33:27,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:33:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:27,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:27,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 19:33:27,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:27,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 19:33:27,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:27,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:33:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 19:33:27,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:33:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 385 proven. 5 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-10-14 19:33:36,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640769517] [2020-10-14 19:33:36,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:33:36,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:33:36,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265374039] [2020-10-14 19:33:36,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:33:36,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:33:36,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:33:36,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:33:36,837 INFO L87 Difference]: Start difference. First operand 64447 states and 76995 transitions. Second operand 17 states. [2020-10-14 19:33:42,272 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 19:33:42,501 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-14 19:33:45,141 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-14 19:33:49,795 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97