/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/Problem12_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:07:29,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:07:29,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:07:29,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:07:29,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:07:29,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:07:29,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:07:29,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:07:29,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:07:29,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:07:29,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:07:29,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:07:29,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:07:29,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:07:29,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:07:29,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:07:29,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:07:29,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:07:29,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:07:29,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:07:29,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:07:29,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:07:29,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:07:29,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:07:29,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:07:29,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:07:29,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:07:29,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:07:29,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:07:29,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:07:29,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:07:29,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:07:29,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:07:29,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:07:29,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:07:29,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:07:29,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:07:29,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:07:29,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:07:29,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:07:29,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:07:29,691 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 21:07:29,735 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:07:29,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:07:29,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:07:29,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:07:29,739 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:07:29,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:07:29,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:07:29,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:07:29,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:07:29,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:07:29,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:07:29,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:07:29,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:07:29,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:07:29,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:07:29,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:07:29,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:07:29,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:07:29,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:07:29,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:07:29,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:07:29,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:07:29,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:07:29,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:07:29,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:07:29,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:07:29,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:07:29,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:07:29,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:07:29,745 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 21:07:30,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:07:30,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:07:30,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:07:30,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:07:30,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:07:30,070 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label11.c [2020-10-14 21:07:30,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f45d8fad/b8fae1f3326c47c6b75d26305a1b0f03/FLAGa74c5b3e4 [2020-10-14 21:07:30,954 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:07:30,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label11.c [2020-10-14 21:07:31,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f45d8fad/b8fae1f3326c47c6b75d26305a1b0f03/FLAGa74c5b3e4 [2020-10-14 21:07:31,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f45d8fad/b8fae1f3326c47c6b75d26305a1b0f03 [2020-10-14 21:07:31,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:07:31,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:07:31,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:07:31,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:07:31,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:07:31,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:07:31" (1/1) ... [2020-10-14 21:07:31,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:31, skipping insertion in model container [2020-10-14 21:07:31,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:07:31" (1/1) ... [2020-10-14 21:07:31,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:07:31,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:07:33,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:07:33,382 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:07:34,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:07:34,069 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:07:34,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:34 WrapperNode [2020-10-14 21:07:34,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:07:34,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:07:34,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:07:34,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:07:34,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:34" (1/1) ... [2020-10-14 21:07:34,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:34" (1/1) ... [2020-10-14 21:07:34,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:34" (1/1) ... [2020-10-14 21:07:34,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:34" (1/1) ... [2020-10-14 21:07:34,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:34" (1/1) ... [2020-10-14 21:07:34,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:34" (1/1) ... [2020-10-14 21:07:34,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:34" (1/1) ... [2020-10-14 21:07:34,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:07:34,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:07:34,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:07:34,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:07:34,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:34" (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 21:07:34,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:07:34,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:07:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:07:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:07:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:07:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:07:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:07:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:07:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:07:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:07:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:07:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:07:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:07:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:07:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:07:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:07:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:07:39,723 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:07:39,724 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:07:39,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:07:39 BoogieIcfgContainer [2020-10-14 21:07:39,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:07:39,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:07:39,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:07:39,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:07:39,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:07:31" (1/3) ... [2020-10-14 21:07:39,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f0c240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:07:39, skipping insertion in model container [2020-10-14 21:07:39,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:34" (2/3) ... [2020-10-14 21:07:39,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f0c240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:07:39, skipping insertion in model container [2020-10-14 21:07:39,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:07:39" (3/3) ... [2020-10-14 21:07:39,766 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label11.c [2020-10-14 21:07:39,780 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:07:39,794 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:07:39,810 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:07:39,846 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:07:39,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:07:39,847 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:07:39,847 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:07:39,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:07:39,847 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:07:39,847 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:07:39,848 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:07:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:07:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 21:07:39,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:39,904 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] [2020-10-14 21:07:39,905 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:39,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:39,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1822047914, now seen corresponding path program 1 times [2020-10-14 21:07:39,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:39,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363663889] [2020-10-14 21:07:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:40,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:40,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:40,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 21:07:40,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:40,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-14 21:07:40,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:40,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 21:07:40,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:07:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:40,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:40,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:40,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:40,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:40,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:07:40,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:40,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:40,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:40,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:40,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:40,701 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 21:07:40,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363663889] [2020-10-14 21:07:40,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:40,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:07:40,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834611060] [2020-10-14 21:07:40,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:07:40,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:40,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:07:40,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:07:40,736 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 21:07:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:50,138 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:07:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:07:50,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-14 21:07:50,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:50,179 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:07:50,179 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:07:50,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:07:50,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:07:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:07:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:07:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2020-10-14 21:07:50,373 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 45 [2020-10-14 21:07:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:50,376 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2020-10-14 21:07:50,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:07:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2020-10-14 21:07:50,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 21:07:50,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:50,387 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:07:50,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:07:50,389 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:50,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:50,390 INFO L82 PathProgramCache]: Analyzing trace with hash 99143583, now seen corresponding path program 1 times [2020-10-14 21:07:50,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:50,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222874114] [2020-10-14 21:07:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:50,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:51,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:51,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 21:07:51,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:51,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-10-14 21:07:51,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:51,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:51,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:07:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:07:51,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:51,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:51,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:51,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:51,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:51,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:07:51,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:51,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:51,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:51,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:07:52,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:52,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:52,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:52,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:07:52,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:52,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 21:07:52,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:52,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:07:52,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:07:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:52,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222874114] [2020-10-14 21:07:52,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:52,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:07:52,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112773398] [2020-10-14 21:07:52,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:52,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:52,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:52,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:52,392 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand 7 states. [2020-10-14 21:08:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:02,516 INFO L93 Difference]: Finished difference Result 4773 states and 8741 transitions. [2020-10-14 21:08:02,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:08:02,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-14 21:08:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:02,542 INFO L225 Difference]: With dead ends: 4773 [2020-10-14 21:08:02,543 INFO L226 Difference]: Without dead ends: 3226 [2020-10-14 21:08:02,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 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 21:08:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2020-10-14 21:08:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3136. [2020-10-14 21:08:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3136 states. [2020-10-14 21:08:02,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 4987 transitions. [2020-10-14 21:08:02,687 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 4987 transitions. Word has length 118 [2020-10-14 21:08:02,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:02,689 INFO L479 AbstractCegarLoop]: Abstraction has 3136 states and 4987 transitions. [2020-10-14 21:08:02,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 4987 transitions. [2020-10-14 21:08:02,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 21:08:02,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:02,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:08:02,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:08:02,701 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:02,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:02,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1797369347, now seen corresponding path program 1 times [2020-10-14 21:08:02,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:02,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051624949] [2020-10-14 21:08:02,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:02,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:02,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:03,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:03,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:08:03,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:03,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-14 21:08:03,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:03,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:03,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:03,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:08:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 21:08:03,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:03,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:03,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:03,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:03,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:03,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:03,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:08:03,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:03,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:03,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:03,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:03,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:03,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:03,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:08:03,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:03,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 21:08:03,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:03,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:08:03,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:08:03,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051624949] [2020-10-14 21:08:03,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:03,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:08:03,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879617142] [2020-10-14 21:08:03,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:08:03,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:03,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:08:03,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:08:03,296 INFO L87 Difference]: Start difference. First operand 3136 states and 4987 transitions. Second operand 6 states. [2020-10-14 21:08:17,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:17,824 INFO L93 Difference]: Finished difference Result 7858 states and 13022 transitions. [2020-10-14 21:08:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:08:17,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-14 21:08:17,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:17,855 INFO L225 Difference]: With dead ends: 7858 [2020-10-14 21:08:17,856 INFO L226 Difference]: Without dead ends: 4728 [2020-10-14 21:08:17,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:08:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2020-10-14 21:08:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 4705. [2020-10-14 21:08:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4705 states. [2020-10-14 21:08:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4705 states to 4705 states and 7132 transitions. [2020-10-14 21:08:18,025 INFO L78 Accepts]: Start accepts. Automaton has 4705 states and 7132 transitions. Word has length 120 [2020-10-14 21:08:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:18,028 INFO L479 AbstractCegarLoop]: Abstraction has 4705 states and 7132 transitions. [2020-10-14 21:08:18,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:08:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4705 states and 7132 transitions. [2020-10-14 21:08:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 21:08:18,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:18,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:08:18,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:08:18,037 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:18,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:18,038 INFO L82 PathProgramCache]: Analyzing trace with hash -995492766, now seen corresponding path program 1 times [2020-10-14 21:08:18,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:18,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146787167] [2020-10-14 21:08:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:18,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:18,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:19,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:19,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 21:08:19,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1367 [2020-10-14 21:08:19,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:19,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:08:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 21:08:19,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:08:19,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:19,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:19,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:19,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:19,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:19,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:08:19,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:19,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:19,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:19,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:08:19,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:19,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:19,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:19,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:19,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:08:19,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:19,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 21:08:19,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:19,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:08:19,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:08:20,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146787167] [2020-10-14 21:08:20,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:08:20,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:08:20,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184223713] [2020-10-14 21:08:20,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:20,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:20,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:20,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:20,039 INFO L87 Difference]: Start difference. First operand 4705 states and 7132 transitions. Second operand 7 states. [2020-10-14 21:08:32,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:32,354 INFO L93 Difference]: Finished difference Result 12053 states and 18567 transitions. [2020-10-14 21:08:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:08:32,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-10-14 21:08:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:32,412 INFO L225 Difference]: With dead ends: 12053 [2020-10-14 21:08:32,412 INFO L226 Difference]: Without dead ends: 7354 [2020-10-14 21:08:32,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:08:32,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2020-10-14 21:08:32,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7232. [2020-10-14 21:08:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7232 states. [2020-10-14 21:08:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7232 states to 7232 states and 9392 transitions. [2020-10-14 21:08:32,684 INFO L78 Accepts]: Start accepts. Automaton has 7232 states and 9392 transitions. Word has length 171 [2020-10-14 21:08:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:32,686 INFO L479 AbstractCegarLoop]: Abstraction has 7232 states and 9392 transitions. [2020-10-14 21:08:32,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7232 states and 9392 transitions. [2020-10-14 21:08:32,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 21:08:32,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:32,693 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:08:32,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:08:32,693 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:32,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1299440854, now seen corresponding path program 1 times [2020-10-14 21:08:32,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:32,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414191740] [2020-10-14 21:08:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:32,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:32,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:34,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:37,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:37,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 21:08:37,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:08:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4917 [2020-10-14 21:08:37,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:37,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:08:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:08:37,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 21:08:37,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:08:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:37,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:37,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:37,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:37,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:08:37,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:37,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:08:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:37,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:37,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:37,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:38,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:38,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:08:38,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 21:08:38,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:38,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:38,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:38,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:38,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:08:38,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:08:38,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 21:08:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:38,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:38,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:38,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:08:38,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 21:08:38,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:38,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:08:38,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:08:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 77 proven. 68 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:08:38,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414191740] [2020-10-14 21:08:38,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:38,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:08:38,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780955527] [2020-10-14 21:08:38,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:08:38,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:38,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:08:38,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:08:38,791 INFO L87 Difference]: Start difference. First operand 7232 states and 9392 transitions. Second operand 8 states. [2020-10-14 21:08:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:54,292 INFO L93 Difference]: Finished difference Result 21994 states and 29343 transitions. [2020-10-14 21:08:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:08:54,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-10-14 21:08:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:54,354 INFO L225 Difference]: With dead ends: 21994 [2020-10-14 21:08:54,354 INFO L226 Difference]: Without dead ends: 14768 [2020-10-14 21:08:54,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:08:54,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14768 states. [2020-10-14 21:08:54,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14768 to 14583. [2020-10-14 21:08:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14583 states. [2020-10-14 21:08:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14583 states to 14583 states and 17798 transitions. [2020-10-14 21:08:54,735 INFO L78 Accepts]: Start accepts. Automaton has 14583 states and 17798 transitions. Word has length 207 [2020-10-14 21:08:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:54,736 INFO L479 AbstractCegarLoop]: Abstraction has 14583 states and 17798 transitions. [2020-10-14 21:08:54,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:08:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand 14583 states and 17798 transitions. [2020-10-14 21:08:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 21:08:54,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:54,744 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:08:54,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:08:54,744 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:54,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash -824542, now seen corresponding path program 1 times [2020-10-14 21:08:54,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:54,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045416649] [2020-10-14 21:08:54,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:54,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:54,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:55,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:55,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:57,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:57,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 21:08:57,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:08:57,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2240 [2020-10-14 21:08:57,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:57,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:08:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:08:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-14 21:08:57,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:57,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:57,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:57,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:57,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:57,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:57,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:08:57,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:57,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:08:57,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:57,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:57,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:57,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:08:57,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:57,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 21:08:57,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:57,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:08:57,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:57,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:08:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:57,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:57,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:57,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 21:08:57,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 21:08:57,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:57,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 21:08:57,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:08:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 21:08:57,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045416649] [2020-10-14 21:08:57,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:57,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:08:57,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779743392] [2020-10-14 21:08:57,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:57,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:57,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:57,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:57,994 INFO L87 Difference]: Start difference. First operand 14583 states and 17798 transitions. Second operand 7 states. [2020-10-14 21:09:15,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:15,366 INFO L93 Difference]: Finished difference Result 39234 states and 49068 transitions. [2020-10-14 21:09:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:09:15,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-14 21:09:15,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:15,484 INFO L225 Difference]: With dead ends: 39234 [2020-10-14 21:09:15,485 INFO L226 Difference]: Without dead ends: 24657 [2020-10-14 21:09:15,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:09:15,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24657 states. [2020-10-14 21:09:16,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24657 to 21941. [2020-10-14 21:09:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21941 states. [2020-10-14 21:09:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21941 states to 21941 states and 26498 transitions. [2020-10-14 21:09:16,161 INFO L78 Accepts]: Start accepts. Automaton has 21941 states and 26498 transitions. Word has length 239 [2020-10-14 21:09:16,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:16,162 INFO L479 AbstractCegarLoop]: Abstraction has 21941 states and 26498 transitions. [2020-10-14 21:09:16,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:09:16,163 INFO L276 IsEmpty]: Start isEmpty. Operand 21941 states and 26498 transitions. [2020-10-14 21:09:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 21:09:16,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:16,169 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:09:16,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:09:16,170 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:16,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:16,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1752983771, now seen corresponding path program 1 times [2020-10-14 21:09:16,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:16,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996298909] [2020-10-14 21:09:16,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:16,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:19,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:19,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 21:09:19,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:09:19,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2909 [2020-10-14 21:09:19,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:19,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:09:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:09:19,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:09:19,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:09:19,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:19,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:19,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:19,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:19,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:09:19,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:19,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:09:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:19,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:19,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:19,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:09:19,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:19,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 21:09:19,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:19,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:09:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:19,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:09:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:19,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:19,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:19,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:09:19,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:19,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 21:09:19,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:19,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 21:09:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:19,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 76 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:09:20,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996298909] [2020-10-14 21:09:20,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:20,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:09:20,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913100694] [2020-10-14 21:09:20,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:09:20,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:20,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:09:20,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:09:20,228 INFO L87 Difference]: Start difference. First operand 21941 states and 26498 transitions. Second operand 7 states. [2020-10-14 21:09:37,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:37,507 INFO L93 Difference]: Finished difference Result 49199 states and 60087 transitions. [2020-10-14 21:09:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:09:37,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-14 21:09:37,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:37,639 INFO L225 Difference]: With dead ends: 49199 [2020-10-14 21:09:37,640 INFO L226 Difference]: Without dead ends: 28031 [2020-10-14 21:09:37,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:09:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28031 states. [2020-10-14 21:09:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28031 to 26834. [2020-10-14 21:09:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26834 states. [2020-10-14 21:09:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26834 states to 26834 states and 32019 transitions. [2020-10-14 21:09:38,238 INFO L78 Accepts]: Start accepts. Automaton has 26834 states and 32019 transitions. Word has length 266 [2020-10-14 21:09:38,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:38,239 INFO L479 AbstractCegarLoop]: Abstraction has 26834 states and 32019 transitions. [2020-10-14 21:09:38,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:09:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 26834 states and 32019 transitions. [2020-10-14 21:09:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-14 21:09:38,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:38,250 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:09:38,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:09:38,251 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:38,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:38,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1404183518, now seen corresponding path program 1 times [2020-10-14 21:09:38,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:38,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925883634] [2020-10-14 21:09:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:38,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:39,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:41,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:41,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-14 21:09:41,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:09:41,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3380 [2020-10-14 21:09:41,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:41,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:09:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 21:09:41,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:41,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:41,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:41,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:41,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:41,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:41,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:09:41,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:41,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:41,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:41,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:41,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:41,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:41,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:09:41,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:41,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 21:09:41,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:41,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:41,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:41,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:41,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:09:41,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:41,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:09:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:41,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:42,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:42,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:09:42,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:42,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 21:09:42,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:42,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:09:42,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:42,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-14 21:09:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:42,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:42,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:42,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:09:42,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:42,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 21:09:42,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:42,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 21:09:42,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:42,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 190 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:09:42,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925883634] [2020-10-14 21:09:42,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:42,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:09:42,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036041835] [2020-10-14 21:09:42,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:09:42,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:42,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:09:42,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:09:42,507 INFO L87 Difference]: Start difference. First operand 26834 states and 32019 transitions. Second operand 7 states. [2020-10-14 21:10:00,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:00,136 INFO L93 Difference]: Finished difference Result 57208 states and 69040 transitions. [2020-10-14 21:10:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:10:00,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-14 21:10:00,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:00,217 INFO L225 Difference]: With dead ends: 57208 [2020-10-14 21:10:00,217 INFO L226 Difference]: Without dead ends: 29524 [2020-10-14 21:10:00,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:10:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29524 states. [2020-10-14 21:10:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29524 to 27669. [2020-10-14 21:10:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27669 states. [2020-10-14 21:10:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27669 states to 27669 states and 32522 transitions. [2020-10-14 21:10:00,771 INFO L78 Accepts]: Start accepts. Automaton has 27669 states and 32522 transitions. Word has length 341 [2020-10-14 21:10:00,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:00,772 INFO L479 AbstractCegarLoop]: Abstraction has 27669 states and 32522 transitions. [2020-10-14 21:10:00,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:10:00,772 INFO L276 IsEmpty]: Start isEmpty. Operand 27669 states and 32522 transitions. [2020-10-14 21:10:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-14 21:10:00,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:00,780 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:00,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:10:00,781 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:00,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:00,781 INFO L82 PathProgramCache]: Analyzing trace with hash -164138769, now seen corresponding path program 1 times [2020-10-14 21:10:00,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:00,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380363694] [2020-10-14 21:10:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:00,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:00,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:02,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:05,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:05,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-14 21:10:05,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:10:05,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 21:10:05,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:05,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:05,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:10:05,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:10:05,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 21:10:05,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:05,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:05,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:05,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:05,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:05,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:05,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:10:05,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:05,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:05,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:06,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:06,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:06,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:06,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:10:06,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:06,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 21:10:06,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:06,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:10:06,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:06,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:10:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:06,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:06,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:06,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:10:06,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:10:06,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:06,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:10:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:06,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 21:10:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:06,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:06,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:06,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:10:06,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:06,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 21:10:06,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:06,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:06,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:10:06,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 270 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:10:06,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380363694] [2020-10-14 21:10:06,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:06,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:10:06,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499273932] [2020-10-14 21:10:06,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:10:06,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:06,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:10:06,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:10:06,902 INFO L87 Difference]: Start difference. First operand 27669 states and 32522 transitions. Second operand 7 states. [2020-10-14 21:10:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:23,747 INFO L93 Difference]: Finished difference Result 66498 states and 81709 transitions. [2020-10-14 21:10:23,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:10:23,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 352 [2020-10-14 21:10:23,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:23,838 INFO L225 Difference]: With dead ends: 66498 [2020-10-14 21:10:23,838 INFO L226 Difference]: Without dead ends: 39602 [2020-10-14 21:10:23,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 21:10:23,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39602 states. [2020-10-14 21:10:24,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39602 to 38438. [2020-10-14 21:10:24,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38438 states. [2020-10-14 21:10:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38438 states to 38438 states and 46863 transitions. [2020-10-14 21:10:24,568 INFO L78 Accepts]: Start accepts. Automaton has 38438 states and 46863 transitions. Word has length 352 [2020-10-14 21:10:24,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:24,569 INFO L479 AbstractCegarLoop]: Abstraction has 38438 states and 46863 transitions. [2020-10-14 21:10:24,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:10:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 38438 states and 46863 transitions. [2020-10-14 21:10:24,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-14 21:10:24,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:24,578 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:24,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:10:24,578 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:24,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:24,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1694626743, now seen corresponding path program 1 times [2020-10-14 21:10:24,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:24,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89183160] [2020-10-14 21:10:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:28,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:28,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-14 21:10:28,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:10:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3893 [2020-10-14 21:10:28,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:28,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-14 21:10:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:10:28,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:28,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:28,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:28,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:28,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:28,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:10:28,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:28,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:28,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:28,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:10:28,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 21:10:28,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:28,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:28,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:28,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:10:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:28,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:28,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:28,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:10:28,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:28,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 21:10:28,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:28,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:10:28,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 21:10:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:28,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:28,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:28,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:10:28,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:28,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 21:10:28,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:28,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:28,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:28,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:10:28,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 259 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 21:10:29,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89183160] [2020-10-14 21:10:29,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:29,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:10:29,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203760101] [2020-10-14 21:10:29,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:10:29,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:29,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:10:29,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:10:29,144 INFO L87 Difference]: Start difference. First operand 38438 states and 46863 transitions. Second operand 7 states. [2020-10-14 21:10:46,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:46,358 INFO L93 Difference]: Finished difference Result 90390 states and 113532 transitions. [2020-10-14 21:10:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:10:46,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-14 21:10:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:46,505 INFO L225 Difference]: With dead ends: 90390 [2020-10-14 21:10:46,506 INFO L226 Difference]: Without dead ends: 52725 [2020-10-14 21:10:46,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:10:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52725 states. [2020-10-14 21:10:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52725 to 52533. [2020-10-14 21:10:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52533 states. [2020-10-14 21:10:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52533 states to 52533 states and 64342 transitions. [2020-10-14 21:10:47,736 INFO L78 Accepts]: Start accepts. Automaton has 52533 states and 64342 transitions. Word has length 356 [2020-10-14 21:10:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:47,737 INFO L479 AbstractCegarLoop]: Abstraction has 52533 states and 64342 transitions. [2020-10-14 21:10:47,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:10:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 52533 states and 64342 transitions. [2020-10-14 21:10:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-14 21:10:47,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:47,745 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:47,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:10:47,745 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:47,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:47,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1819451017, now seen corresponding path program 1 times [2020-10-14 21:10:47,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:47,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597159024] [2020-10-14 21:10:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:47,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:48,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:51,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:51,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-14 21:10:51,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:10:51,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3610 [2020-10-14 21:10:51,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:51,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:51,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:10:51,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:10:51,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 21:10:51,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:51,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:51,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:51,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:51,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:10:51,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:51,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:51,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:51,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:51,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:51,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:51,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:10:51,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 21:10:51,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:51,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:10:51,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:51,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:10:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:51,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:51,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:51,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:10:51,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:51,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 21:10:51,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:51,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:10:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:10:52,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:52,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-14 21:10:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:52,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:52,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:52,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:10:52,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 21:10:52,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:52,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:10:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 306 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 21:10:52,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597159024] [2020-10-14 21:10:52,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:52,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:10:52,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354861208] [2020-10-14 21:10:52,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:10:52,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:52,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:10:52,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:10:52,251 INFO L87 Difference]: Start difference. First operand 52533 states and 64342 transitions. Second operand 10 states.