/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:02:54,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:02:54,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:02:54,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:02:54,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:02:54,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:02:54,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:02:54,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:02:54,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:02:54,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:02:54,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:02:54,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:02:54,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:02:54,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:02:54,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:02:54,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:02:54,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:02:54,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:02:54,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:02:54,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:02:54,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:02:54,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:02:54,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:02:54,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:02:54,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:02:54,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:02:54,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:02:54,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:02:54,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:02:54,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:02:54,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:02:54,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:02:54,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:02:54,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:02:54,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:02:54,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:02:54,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:02:54,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:02:54,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:02:54,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:02:54,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:02:54,956 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 09:02:54,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:02:54,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:02:54,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:02:54,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:02:54,999 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:02:54,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:02:54,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:02:54,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:02:54,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:02:55,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:02:55,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:02:55,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:02:55,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:02:55,000 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:02:55,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:02:55,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:02:55,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:02:55,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:02:55,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:02:55,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:02:55,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:02:55,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:02:55,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:02:55,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:02:55,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:02:55,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:02:55,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:02:55,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:02:55,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:02:55,004 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:02:55,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:02:55,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:02:55,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:02:55,349 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:02:55,349 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:02:55,349 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:02:55,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6f9ec9cc/b599f5692e524dc9a6a58da25164b65d/FLAG71231a7c3 [2020-10-14 09:02:56,016 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:02:56,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:02:56,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6f9ec9cc/b599f5692e524dc9a6a58da25164b65d/FLAG71231a7c3 [2020-10-14 09:02:56,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6f9ec9cc/b599f5692e524dc9a6a58da25164b65d [2020-10-14 09:02:56,315 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:02:56,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:02:56,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:02:56,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:02:56,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:02:56,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:02:56" (1/1) ... [2020-10-14 09:02:56,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a89726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:56, skipping insertion in model container [2020-10-14 09:02:56,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:02:56" (1/1) ... [2020-10-14 09:02:56,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:02:56,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:02:57,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:02:57,214 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:02:57,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:02:57,545 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:02:57,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:57 WrapperNode [2020-10-14 09:02:57,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:02:57,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:02:57,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:02:57,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:02:57,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:57" (1/1) ... [2020-10-14 09:02:57,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:57" (1/1) ... [2020-10-14 09:02:57,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:57" (1/1) ... [2020-10-14 09:02:57,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:57" (1/1) ... [2020-10-14 09:02:57,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:57" (1/1) ... [2020-10-14 09:02:57,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:57" (1/1) ... [2020-10-14 09:02:57,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:57" (1/1) ... [2020-10-14 09:02:57,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:02:57,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:02:57,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:02:57,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:02:57,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:57" (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 09:02:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:02:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:02:57,798 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:02:57,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:02:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:02:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:02:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:02:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:02:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:02:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:02:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:02:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:02:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:02:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:02:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:02:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:02:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:02:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:02:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:02:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:02:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:02:59,778 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:02:59,778 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:02:59,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:02:59 BoogieIcfgContainer [2020-10-14 09:02:59,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:02:59,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:02:59,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:02:59,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:02:59,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:02:56" (1/3) ... [2020-10-14 09:02:59,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c46e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:02:59, skipping insertion in model container [2020-10-14 09:02:59,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:57" (2/3) ... [2020-10-14 09:02:59,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c46e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:02:59, skipping insertion in model container [2020-10-14 09:02:59,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:02:59" (3/3) ... [2020-10-14 09:02:59,794 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:02:59,804 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:02:59,812 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-14 09:02:59,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-14 09:02:59,854 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:02:59,855 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:02:59,855 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:02:59,855 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:02:59,855 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:02:59,855 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:02:59,855 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:02:59,856 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:02:59,885 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states. [2020-10-14 09:02:59,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 09:02:59,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:59,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:59,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:59,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash 393858653, now seen corresponding path program 1 times [2020-10-14 09:02:59,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:59,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996065841] [2020-10-14 09:02:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:00,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:00,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:00,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:02,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:02,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:05,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:05,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 09:03:05,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:03:05,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:03:05,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:05,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 09:03:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:03:05,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:03:05,875 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:03:05,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:05,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:05,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:05,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:05,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:03:05,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:05,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:05,967 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 09:03:05,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996065841] [2020-10-14 09:03:05,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:05,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:03:05,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903914545] [2020-10-14 09:03:05,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:03:05,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:05,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:03:05,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:03:05,995 INFO L87 Difference]: Start difference. First operand 461 states. Second operand 4 states. [2020-10-14 09:03:06,540 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-14 09:03:10,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:10,016 INFO L93 Difference]: Finished difference Result 731 states and 1276 transitions. [2020-10-14 09:03:10,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:03:10,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-14 09:03:10,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:10,040 INFO L225 Difference]: With dead ends: 731 [2020-10-14 09:03:10,041 INFO L226 Difference]: Without dead ends: 574 [2020-10-14 09:03:10,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:03:10,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-10-14 09:03:10,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 568. [2020-10-14 09:03:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2020-10-14 09:03:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 761 transitions. [2020-10-14 09:03:10,138 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 761 transitions. Word has length 54 [2020-10-14 09:03:10,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:10,139 INFO L479 AbstractCegarLoop]: Abstraction has 568 states and 761 transitions. [2020-10-14 09:03:10,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:03:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 761 transitions. [2020-10-14 09:03:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 09:03:10,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:10,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:10,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:03:10,174 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:10,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:10,175 INFO L82 PathProgramCache]: Analyzing trace with hash 773986992, now seen corresponding path program 1 times [2020-10-14 09:03:10,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:10,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639800018] [2020-10-14 09:03:10,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:10,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:10,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:10,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:14,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:15,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:15,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 09:03:15,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:03:15,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:03:15,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:15,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:15,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 09:03:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:03:15,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 09:03:15,659 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:03:15,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:15,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:15,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:15,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:15,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:15,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:03:15,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:15,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:15,700 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 09:03:15,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639800018] [2020-10-14 09:03:15,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:15,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:03:15,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755812977] [2020-10-14 09:03:15,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:03:15,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:15,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:03:15,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:03:15,704 INFO L87 Difference]: Start difference. First operand 568 states and 761 transitions. Second operand 4 states. [2020-10-14 09:03:16,091 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-14 09:03:18,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:18,577 INFO L93 Difference]: Finished difference Result 997 states and 1394 transitions. [2020-10-14 09:03:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:03:18,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-14 09:03:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:18,588 INFO L225 Difference]: With dead ends: 997 [2020-10-14 09:03:18,588 INFO L226 Difference]: Without dead ends: 784 [2020-10-14 09:03:18,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:03:18,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-10-14 09:03:18,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 777. [2020-10-14 09:03:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2020-10-14 09:03:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1067 transitions. [2020-10-14 09:03:18,633 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1067 transitions. Word has length 54 [2020-10-14 09:03:18,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:18,634 INFO L479 AbstractCegarLoop]: Abstraction has 777 states and 1067 transitions. [2020-10-14 09:03:18,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:03:18,634 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1067 transitions. [2020-10-14 09:03:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 09:03:18,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:18,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:18,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:03:18,637 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:18,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:18,638 INFO L82 PathProgramCache]: Analyzing trace with hash 667946061, now seen corresponding path program 1 times [2020-10-14 09:03:18,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:18,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425703416] [2020-10-14 09:03:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:18,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:19,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:19,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:21,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:21,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:23,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:23,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 09:03:23,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:03:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:03:23,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:23,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 09:03:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:03:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 09:03:23,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:03:24,131 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:03:24,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:24,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:24,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:24,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:24,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:24,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 09:03:24,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:24,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:03:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:24,219 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 09:03:24,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425703416] [2020-10-14 09:03:24,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:24,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:03:24,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22514663] [2020-10-14 09:03:24,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 09:03:24,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:24,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 09:03:24,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:03:24,223 INFO L87 Difference]: Start difference. First operand 777 states and 1067 transitions. Second operand 7 states. [2020-10-14 09:03:24,613 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-14 09:03:27,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:27,573 INFO L93 Difference]: Finished difference Result 2026 states and 2927 transitions. [2020-10-14 09:03:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:03:27,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-10-14 09:03:27,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:27,586 INFO L225 Difference]: With dead ends: 2026 [2020-10-14 09:03:27,586 INFO L226 Difference]: Without dead ends: 1562 [2020-10-14 09:03:27,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:03:27,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2020-10-14 09:03:27,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 793. [2020-10-14 09:03:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-10-14 09:03:27,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1079 transitions. [2020-10-14 09:03:27,676 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1079 transitions. Word has length 54 [2020-10-14 09:03:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:27,680 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1079 transitions. [2020-10-14 09:03:27,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 09:03:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1079 transitions. [2020-10-14 09:03:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 09:03:27,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:27,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:27,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:03:27,684 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:27,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:27,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1860274899, now seen corresponding path program 1 times [2020-10-14 09:03:27,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:27,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853009219] [2020-10-14 09:03:27,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:27,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:27,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:28,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:28,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:28,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:28,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:31,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:31,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:31,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:32,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:32,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:32,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:32,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:32,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 09:03:32,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:03:32,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 09:03:32,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:32,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:03:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:03:32,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:33,188 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:03:33,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:33,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:33,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:33,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:33,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:33,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 09:03:33,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:33,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:33,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:03:33,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:33,244 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 09:03:33,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853009219] [2020-10-14 09:03:33,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:33,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:03:33,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565191395] [2020-10-14 09:03:33,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:33,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:33,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:33,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:33,247 INFO L87 Difference]: Start difference. First operand 793 states and 1079 transitions. Second operand 6 states. [2020-10-14 09:03:33,661 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 09:03:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:36,317 INFO L93 Difference]: Finished difference Result 1427 states and 1986 transitions. [2020-10-14 09:03:36,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:03:36,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-14 09:03:36,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:36,325 INFO L225 Difference]: With dead ends: 1427 [2020-10-14 09:03:36,325 INFO L226 Difference]: Without dead ends: 913 [2020-10-14 09:03:36,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:03:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-10-14 09:03:36,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 904. [2020-10-14 09:03:36,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-10-14 09:03:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1239 transitions. [2020-10-14 09:03:36,379 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1239 transitions. Word has length 54 [2020-10-14 09:03:36,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:36,379 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1239 transitions. [2020-10-14 09:03:36,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:36,380 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1239 transitions. [2020-10-14 09:03:36,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 09:03:36,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:36,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:36,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:03:36,384 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:36,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:36,384 INFO L82 PathProgramCache]: Analyzing trace with hash 2022835488, now seen corresponding path program 1 times [2020-10-14 09:03:36,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:36,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276813576] [2020-10-14 09:03:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:41,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:41,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:41,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 09:03:41,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:03:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:03:41,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:41,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:03:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:03:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:41,983 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:03:41,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:41,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:42,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:42,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:42,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:42,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:03:42,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:42,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:42,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:42,033 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 09:03:42,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276813576] [2020-10-14 09:03:42,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:42,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:03:42,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156006391] [2020-10-14 09:03:42,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:42,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:42,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:42,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:42,036 INFO L87 Difference]: Start difference. First operand 904 states and 1239 transitions. Second operand 6 states. [2020-10-14 09:03:42,650 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:03:45,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:45,814 INFO L93 Difference]: Finished difference Result 4628 states and 6712 transitions. [2020-10-14 09:03:45,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:03:45,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-14 09:03:45,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:45,835 INFO L225 Difference]: With dead ends: 4628 [2020-10-14 09:03:45,836 INFO L226 Difference]: Without dead ends: 3829 [2020-10-14 09:03:45,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:03:45,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2020-10-14 09:03:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 2400. [2020-10-14 09:03:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2400 states. [2020-10-14 09:03:45,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 3423 transitions. [2020-10-14 09:03:45,999 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 3423 transitions. Word has length 55 [2020-10-14 09:03:45,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:45,999 INFO L479 AbstractCegarLoop]: Abstraction has 2400 states and 3423 transitions. [2020-10-14 09:03:46,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:46,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 3423 transitions. [2020-10-14 09:03:46,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 09:03:46,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:46,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:46,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:03:46,003 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:46,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:46,004 INFO L82 PathProgramCache]: Analyzing trace with hash -2075670050, now seen corresponding path program 1 times [2020-10-14 09:03:46,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:46,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021968103] [2020-10-14 09:03:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:46,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:49,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:51,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:51,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 09:03:51,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:03:51,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:03:51,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:51,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 09:03:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:03:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 09:03:51,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:51,548 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:03:51,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:51,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:51,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:51,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:51,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:51,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:03:51,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:51,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:51,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:51,589 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 09:03:51,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021968103] [2020-10-14 09:03:51,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:51,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 09:03:51,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613322352] [2020-10-14 09:03:51,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 09:03:51,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:51,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 09:03:51,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:03:51,592 INFO L87 Difference]: Start difference. First operand 2400 states and 3423 transitions. Second operand 7 states. [2020-10-14 09:03:52,033 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-14 09:03:54,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:54,944 INFO L93 Difference]: Finished difference Result 6370 states and 9342 transitions. [2020-10-14 09:03:54,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:03:54,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-14 09:03:54,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:54,967 INFO L225 Difference]: With dead ends: 6370 [2020-10-14 09:03:54,967 INFO L226 Difference]: Without dead ends: 4956 [2020-10-14 09:03:54,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:03:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2020-10-14 09:03:55,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 2278. [2020-10-14 09:03:55,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2278 states. [2020-10-14 09:03:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3249 transitions. [2020-10-14 09:03:55,148 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3249 transitions. Word has length 55 [2020-10-14 09:03:55,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:55,149 INFO L479 AbstractCegarLoop]: Abstraction has 2278 states and 3249 transitions. [2020-10-14 09:03:55,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 09:03:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3249 transitions. [2020-10-14 09:03:55,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:03:55,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:55,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:55,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:03:55,152 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:55,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:55,152 INFO L82 PathProgramCache]: Analyzing trace with hash -718513991, now seen corresponding path program 1 times [2020-10-14 09:03:55,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:55,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986476266] [2020-10-14 09:03:55,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:55,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:55,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:55,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:55,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:55,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:56,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:56,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:57,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:57,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:00,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:00,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:04:00,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:04:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:04:00,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:00,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 09:04:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:04:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:00,757 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:04:00,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:00,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:00,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:00,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:00,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:04:00,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:00,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:04:00,813 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 09:04:00,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986476266] [2020-10-14 09:04:00,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:00,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:04:00,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704650316] [2020-10-14 09:04:00,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:04:00,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:00,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:04:00,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:00,816 INFO L87 Difference]: Start difference. First operand 2278 states and 3249 transitions. Second operand 4 states. [2020-10-14 09:04:02,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:02,889 INFO L93 Difference]: Finished difference Result 4551 states and 6599 transitions. [2020-10-14 09:04:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:04:02,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 09:04:02,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:02,905 INFO L225 Difference]: With dead ends: 4551 [2020-10-14 09:04:02,905 INFO L226 Difference]: Without dead ends: 2915 [2020-10-14 09:04:02,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:02,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-10-14 09:04:03,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2909. [2020-10-14 09:04:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2909 states. [2020-10-14 09:04:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 4071 transitions. [2020-10-14 09:04:03,132 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 4071 transitions. Word has length 56 [2020-10-14 09:04:03,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:03,134 INFO L479 AbstractCegarLoop]: Abstraction has 2909 states and 4071 transitions. [2020-10-14 09:04:03,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:04:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 4071 transitions. [2020-10-14 09:04:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:04:03,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:03,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:03,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:04:03,138 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:03,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:03,138 INFO L82 PathProgramCache]: Analyzing trace with hash -60183496, now seen corresponding path program 1 times [2020-10-14 09:04:03,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:03,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431749895] [2020-10-14 09:04:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:03,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:03,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:03,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:05,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:05,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:05,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:06,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:06,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:08,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:08,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:04:08,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:04:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:04:08,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:08,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 09:04:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:04:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:04:08,579 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:04:08,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:08,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:08,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:08,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:04:08,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:08,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:08,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:08,614 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 09:04:08,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431749895] [2020-10-14 09:04:08,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:08,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:04:08,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453113684] [2020-10-14 09:04:08,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:04:08,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:08,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:04:08,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:08,617 INFO L87 Difference]: Start difference. First operand 2909 states and 4071 transitions. Second operand 4 states. [2020-10-14 09:04:09,035 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-14 09:04:11,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:11,271 INFO L93 Difference]: Finished difference Result 4379 states and 6189 transitions. [2020-10-14 09:04:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:04:11,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 09:04:11,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:11,283 INFO L225 Difference]: With dead ends: 4379 [2020-10-14 09:04:11,283 INFO L226 Difference]: Without dead ends: 2915 [2020-10-14 09:04:11,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:04:11,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-10-14 09:04:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2899. [2020-10-14 09:04:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2899 states. [2020-10-14 09:04:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 4013 transitions. [2020-10-14 09:04:11,498 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 4013 transitions. Word has length 56 [2020-10-14 09:04:11,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:11,498 INFO L479 AbstractCegarLoop]: Abstraction has 2899 states and 4013 transitions. [2020-10-14 09:04:11,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:04:11,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 4013 transitions. [2020-10-14 09:04:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:04:11,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:11,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:11,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:04:11,504 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:11,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1381999116, now seen corresponding path program 1 times [2020-10-14 09:04:11,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:11,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274749372] [2020-10-14 09:04:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:11,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:11,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:12,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:12,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:12,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:12,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:12,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:12,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:13,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:13,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:14,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:14,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:16,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:16,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:04:16,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:04:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:04:16,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:16,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:04:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:04:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 09:04:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:16,977 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:04:16,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:16,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:17,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:17,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:17,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:17,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:04:17,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:17,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:04:17,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:17,023 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 09:04:17,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274749372] [2020-10-14 09:04:17,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:17,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:04:17,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176910671] [2020-10-14 09:04:17,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:04:17,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:17,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:04:17,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:04:17,025 INFO L87 Difference]: Start difference. First operand 2899 states and 4013 transitions. Second operand 6 states. [2020-10-14 09:04:17,454 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 09:04:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:19,323 INFO L93 Difference]: Finished difference Result 6737 states and 9396 transitions. [2020-10-14 09:04:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:04:19,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-14 09:04:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:19,337 INFO L225 Difference]: With dead ends: 6737 [2020-10-14 09:04:19,338 INFO L226 Difference]: Without dead ends: 3992 [2020-10-14 09:04:19,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:04:19,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2020-10-14 09:04:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3968. [2020-10-14 09:04:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3968 states. [2020-10-14 09:04:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5499 transitions. [2020-10-14 09:04:19,620 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5499 transitions. Word has length 57 [2020-10-14 09:04:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:19,620 INFO L479 AbstractCegarLoop]: Abstraction has 3968 states and 5499 transitions. [2020-10-14 09:04:19,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:04:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5499 transitions. [2020-10-14 09:04:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:04:19,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:19,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:19,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:04:19,624 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash -636640496, now seen corresponding path program 1 times [2020-10-14 09:04:19,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:19,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324950487] [2020-10-14 09:04:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:19,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:19,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:19,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:21,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:21,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:21,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:21,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:23,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:23,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:24,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:24,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:04:24,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 09:04:24,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:04:24,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:24,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:24,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 09:04:24,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:04:24,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 09:04:24,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:25,177 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:04:25,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:25,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:25,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:25,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:25,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:25,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:04:25,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:25,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:04:25,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:25,223 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 09:04:25,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324950487] [2020-10-14 09:04:25,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:25,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 09:04:25,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101169882] [2020-10-14 09:04:25,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 09:04:25,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:25,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 09:04:25,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:04:25,225 INFO L87 Difference]: Start difference. First operand 3968 states and 5499 transitions. Second operand 8 states. [2020-10-14 09:04:25,642 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-14 09:04:28,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:28,777 INFO L93 Difference]: Finished difference Result 13730 states and 19334 transitions. [2020-10-14 09:04:28,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 09:04:28,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-14 09:04:28,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:28,818 INFO L225 Difference]: With dead ends: 13730 [2020-10-14 09:04:28,818 INFO L226 Difference]: Without dead ends: 11300 [2020-10-14 09:04:28,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-14 09:04:28,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11300 states. [2020-10-14 09:04:29,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11300 to 3964. [2020-10-14 09:04:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3964 states. [2020-10-14 09:04:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3964 states to 3964 states and 5448 transitions. [2020-10-14 09:04:29,156 INFO L78 Accepts]: Start accepts. Automaton has 3964 states and 5448 transitions. Word has length 57 [2020-10-14 09:04:29,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:29,156 INFO L479 AbstractCegarLoop]: Abstraction has 3964 states and 5448 transitions. [2020-10-14 09:04:29,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 09:04:29,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3964 states and 5448 transitions. [2020-10-14 09:04:29,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 09:04:29,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:29,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:29,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:04:29,161 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:29,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:29,162 INFO L82 PathProgramCache]: Analyzing trace with hash -898286955, now seen corresponding path program 1 times [2020-10-14 09:04:29,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:29,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697428383] [2020-10-14 09:04:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:29,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:29,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:29,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:29,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:29,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:29,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:29,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:30,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:30,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:31,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:32,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:32,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:32,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:34,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:34,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:34,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 09:04:34,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:04:34,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 09:04:34,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:34,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:04:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:04:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 09:04:34,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:34,644 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:04:34,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:34,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:34,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:34,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:34,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:34,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:04:34,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:34,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:04:34,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:34,690 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 09:04:34,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697428383] [2020-10-14 09:04:34,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:34,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:04:34,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861758134] [2020-10-14 09:04:34,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:04:34,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:34,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:04:34,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:04:34,692 INFO L87 Difference]: Start difference. First operand 3964 states and 5448 transitions. Second operand 10 states. [2020-10-14 09:04:35,160 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-14 09:04:37,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:37,989 INFO L93 Difference]: Finished difference Result 7524 states and 10464 transitions. [2020-10-14 09:04:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 09:04:37,989 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-14 09:04:37,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:38,001 INFO L225 Difference]: With dead ends: 7524 [2020-10-14 09:04:38,002 INFO L226 Difference]: Without dead ends: 5297 [2020-10-14 09:04:38,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-14 09:04:38,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2020-10-14 09:04:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 2637. [2020-10-14 09:04:38,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2637 states. [2020-10-14 09:04:38,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 3603 transitions. [2020-10-14 09:04:38,276 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 3603 transitions. Word has length 58 [2020-10-14 09:04:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:38,276 INFO L479 AbstractCegarLoop]: Abstraction has 2637 states and 3603 transitions. [2020-10-14 09:04:38,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:04:38,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 3603 transitions. [2020-10-14 09:04:38,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 09:04:38,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:38,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:38,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:04:38,279 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:38,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:38,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1952347539, now seen corresponding path program 1 times [2020-10-14 09:04:38,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:38,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726680859] [2020-10-14 09:04:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:38,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:38,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:39,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:39,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:39,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:41,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:41,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:42,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:43,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:43,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 09:04:43,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:04:43,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:04:43,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:43,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:04:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:04:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 09:04:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:04:43,764 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:04:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:43,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:43,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:43,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:43,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:43,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:04:43,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:43,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:04:43,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:43,810 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 09:04:43,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726680859] [2020-10-14 09:04:43,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:43,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:04:43,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883842744] [2020-10-14 09:04:43,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:04:43,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:43,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:04:43,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:04:43,812 INFO L87 Difference]: Start difference. First operand 2637 states and 3603 transitions. Second operand 10 states. [2020-10-14 09:04:44,291 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 275 [2020-10-14 09:04:46,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:46,969 INFO L93 Difference]: Finished difference Result 5248 states and 7306 transitions. [2020-10-14 09:04:46,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 09:04:46,969 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-14 09:04:46,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:46,980 INFO L225 Difference]: With dead ends: 5248 [2020-10-14 09:04:46,980 INFO L226 Difference]: Without dead ends: 5243 [2020-10-14 09:04:46,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-14 09:04:46,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5243 states. [2020-10-14 09:04:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5243 to 2637. [2020-10-14 09:04:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2637 states. [2020-10-14 09:04:47,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 3601 transitions. [2020-10-14 09:04:47,264 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 3601 transitions. Word has length 58 [2020-10-14 09:04:47,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:47,264 INFO L479 AbstractCegarLoop]: Abstraction has 2637 states and 3601 transitions. [2020-10-14 09:04:47,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:04:47,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 3601 transitions. [2020-10-14 09:04:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 09:04:47,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:47,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:47,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:04:47,268 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:47,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:47,268 INFO L82 PathProgramCache]: Analyzing trace with hash -85195835, now seen corresponding path program 1 times [2020-10-14 09:04:47,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:47,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695023241] [2020-10-14 09:04:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:47,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:47,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:47,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:47,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:48,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:48,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:48,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:49,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:50,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:50,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 09:04:50,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:04:50,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3170 [2020-10-14 09:04:50,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:50,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:04:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:04:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:04:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:50,855 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:04:50,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:50,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:50,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:50,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:50,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:04:50,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:50,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:50,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:50,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:50,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:50,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:50,884 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 09:04:50,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695023241] [2020-10-14 09:04:50,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:50,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:04:50,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961508400] [2020-10-14 09:04:50,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:04:50,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:50,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:04:50,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:04:50,887 INFO L87 Difference]: Start difference. First operand 2637 states and 3601 transitions. Second operand 6 states. [2020-10-14 09:04:53,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:53,036 INFO L93 Difference]: Finished difference Result 8762 states and 12135 transitions. [2020-10-14 09:04:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:04:53,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-14 09:04:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:53,051 INFO L225 Difference]: With dead ends: 8762 [2020-10-14 09:04:53,051 INFO L226 Difference]: Without dead ends: 6942 [2020-10-14 09:04:53,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:04:53,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6942 states. [2020-10-14 09:04:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6942 to 2474. [2020-10-14 09:04:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2020-10-14 09:04:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3337 transitions. [2020-10-14 09:04:53,362 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3337 transitions. Word has length 58 [2020-10-14 09:04:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:53,363 INFO L479 AbstractCegarLoop]: Abstraction has 2474 states and 3337 transitions. [2020-10-14 09:04:53,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:04:53,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3337 transitions. [2020-10-14 09:04:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:04:53,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:53,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:53,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:04:53,365 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:53,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1346426636, now seen corresponding path program 1 times [2020-10-14 09:04:53,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:53,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133567801] [2020-10-14 09:04:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:53,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:53,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:53,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:53,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:56,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:56,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:04:56,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:04:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3079 [2020-10-14 09:04:56,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:56,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 09:04:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:04:56,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:56,843 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:04:56,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:56,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:56,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:56,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:56,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:56,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:04:56,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:56,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:56,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:56,866 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 09:04:56,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133567801] [2020-10-14 09:04:56,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:56,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:04:56,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112207356] [2020-10-14 09:04:56,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:04:56,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:56,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:04:56,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:56,868 INFO L87 Difference]: Start difference. First operand 2474 states and 3337 transitions. Second operand 4 states. [2020-10-14 09:04:58,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:58,655 INFO L93 Difference]: Finished difference Result 3615 states and 4910 transitions. [2020-10-14 09:04:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:04:58,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-14 09:04:58,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:58,661 INFO L225 Difference]: With dead ends: 3615 [2020-10-14 09:04:58,662 INFO L226 Difference]: Without dead ends: 2481 [2020-10-14 09:04:58,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2020-10-14 09:04:58,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2474. [2020-10-14 09:04:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2020-10-14 09:04:58,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3304 transitions. [2020-10-14 09:04:58,983 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3304 transitions. Word has length 59 [2020-10-14 09:04:58,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:58,984 INFO L479 AbstractCegarLoop]: Abstraction has 2474 states and 3304 transitions. [2020-10-14 09:04:58,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:04:58,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3304 transitions. [2020-10-14 09:04:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:04:58,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:58,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:58,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:04:58,987 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:58,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:58,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1236669940, now seen corresponding path program 1 times [2020-10-14 09:04:58,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:58,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182374456] [2020-10-14 09:04:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:59,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:59,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:59,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:00,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:00,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:05:00,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:05:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1839 [2020-10-14 09:05:00,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:00,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 09:05:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:05:00,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:01,214 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:01,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:01,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:01,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:01,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:01,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:05:01,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:01,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:01,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:01,238 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 09:05:01,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182374456] [2020-10-14 09:05:01,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:01,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:01,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916307099] [2020-10-14 09:05:01,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:01,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:01,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:01,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:01,240 INFO L87 Difference]: Start difference. First operand 2474 states and 3304 transitions. Second operand 4 states. [2020-10-14 09:05:03,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:03,125 INFO L93 Difference]: Finished difference Result 3626 states and 4876 transitions. [2020-10-14 09:05:03,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:05:03,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-14 09:05:03,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:03,129 INFO L225 Difference]: With dead ends: 3626 [2020-10-14 09:05:03,129 INFO L226 Difference]: Without dead ends: 2480 [2020-10-14 09:05:03,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:03,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2020-10-14 09:05:03,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2474. [2020-10-14 09:05:03,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2020-10-14 09:05:03,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3275 transitions. [2020-10-14 09:05:03,394 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3275 transitions. Word has length 59 [2020-10-14 09:05:03,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:03,394 INFO L479 AbstractCegarLoop]: Abstraction has 2474 states and 3275 transitions. [2020-10-14 09:05:03,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:03,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3275 transitions. [2020-10-14 09:05:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 09:05:03,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:03,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:03,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:05:03,396 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:03,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:03,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1738785204, now seen corresponding path program 1 times [2020-10-14 09:05:03,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:03,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085667396] [2020-10-14 09:05:03,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:03,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:04,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:05,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:06,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:06,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 09:05:06,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:05:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3271 [2020-10-14 09:05:06,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:06,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:05:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:05:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 09:05:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:07,261 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:07,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:07,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:07,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:07,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:07,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:05:07,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:07,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:07,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:07,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:07,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:07,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:07,300 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 09:05:07,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085667396] [2020-10-14 09:05:07,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:07,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:05:07,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037896068] [2020-10-14 09:05:07,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:05:07,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:07,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:05:07,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:05:07,302 INFO L87 Difference]: Start difference. First operand 2474 states and 3275 transitions. Second operand 9 states. [2020-10-14 09:05:07,746 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:05:10,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:10,350 INFO L93 Difference]: Finished difference Result 5509 states and 7466 transitions. [2020-10-14 09:05:10,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:05:10,351 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-14 09:05:10,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:10,356 INFO L225 Difference]: With dead ends: 5509 [2020-10-14 09:05:10,356 INFO L226 Difference]: Without dead ends: 5505 [2020-10-14 09:05:10,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-14 09:05:10,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5505 states. [2020-10-14 09:05:10,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5505 to 2470. [2020-10-14 09:05:10,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2470 states. [2020-10-14 09:05:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3271 transitions. [2020-10-14 09:05:10,691 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3271 transitions. Word has length 61 [2020-10-14 09:05:10,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:10,691 INFO L479 AbstractCegarLoop]: Abstraction has 2470 states and 3271 transitions. [2020-10-14 09:05:10,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:05:10,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3271 transitions. [2020-10-14 09:05:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 09:05:10,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:10,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:10,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:05:10,694 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:10,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:10,694 INFO L82 PathProgramCache]: Analyzing trace with hash -82442540, now seen corresponding path program 1 times [2020-10-14 09:05:10,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:10,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983936650] [2020-10-14 09:05:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:10,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:10,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:10,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:11,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:11,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:11,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:11,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:13,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:13,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 09:05:13,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:05:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2341 [2020-10-14 09:05:13,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:13,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:05:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:05:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 09:05:13,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:13,566 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:13,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:13,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:13,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:13,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:13,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:05:13,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:13,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:13,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:13,595 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 09:05:13,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983936650] [2020-10-14 09:05:13,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:13,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:05:13,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276761394] [2020-10-14 09:05:13,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:05:13,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:13,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:05:13,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:05:13,597 INFO L87 Difference]: Start difference. First operand 2470 states and 3271 transitions. Second operand 9 states. [2020-10-14 09:05:14,022 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-14 09:05:16,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:16,729 INFO L93 Difference]: Finished difference Result 5523 states and 7437 transitions. [2020-10-14 09:05:16,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:05:16,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-14 09:05:16,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:16,735 INFO L225 Difference]: With dead ends: 5523 [2020-10-14 09:05:16,736 INFO L226 Difference]: Without dead ends: 4066 [2020-10-14 09:05:16,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:05:16,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2020-10-14 09:05:16,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 2800. [2020-10-14 09:05:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2800 states. [2020-10-14 09:05:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 3744 transitions. [2020-10-14 09:05:16,989 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 3744 transitions. Word has length 61 [2020-10-14 09:05:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:16,990 INFO L479 AbstractCegarLoop]: Abstraction has 2800 states and 3744 transitions. [2020-10-14 09:05:16,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:05:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 3744 transitions. [2020-10-14 09:05:16,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 09:05:16,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:16,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:16,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:05:16,993 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:16,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:16,993 INFO L82 PathProgramCache]: Analyzing trace with hash -774572617, now seen corresponding path program 1 times [2020-10-14 09:05:16,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:16,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921946076] [2020-10-14 09:05:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:17,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:18,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:18,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:18,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:18,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:19,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:20,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:21,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:21,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:21,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:22,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:22,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 09:05:22,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:05:22,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:05:22,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:22,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:22,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:05:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:05:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 09:05:22,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:22,487 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:22,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:22,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:22,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:22,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:05:22,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:22,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:22,514 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 09:05:22,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921946076] [2020-10-14 09:05:22,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:22,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:05:22,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796802610] [2020-10-14 09:05:22,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:05:22,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:22,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:05:22,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:05:22,521 INFO L87 Difference]: Start difference. First operand 2800 states and 3744 transitions. Second operand 9 states. [2020-10-14 09:05:22,944 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-14 09:05:24,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:24,769 INFO L93 Difference]: Finished difference Result 3565 states and 4780 transitions. [2020-10-14 09:05:24,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:05:24,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-14 09:05:24,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:24,774 INFO L225 Difference]: With dead ends: 3565 [2020-10-14 09:05:24,774 INFO L226 Difference]: Without dead ends: 3473 [2020-10-14 09:05:24,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:05:24,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2020-10-14 09:05:25,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 2799. [2020-10-14 09:05:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2799 states. [2020-10-14 09:05:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3742 transitions. [2020-10-14 09:05:25,025 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3742 transitions. Word has length 61 [2020-10-14 09:05:25,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:25,025 INFO L479 AbstractCegarLoop]: Abstraction has 2799 states and 3742 transitions. [2020-10-14 09:05:25,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:05:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3742 transitions. [2020-10-14 09:05:25,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 09:05:25,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:25,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:25,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:05:25,028 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:25,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:25,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1218892487, now seen corresponding path program 1 times [2020-10-14 09:05:25,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:25,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117093485] [2020-10-14 09:05:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:25,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:26,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:27,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:27,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 09:05:27,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:05:27,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2771 [2020-10-14 09:05:27,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:27,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:05:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:05:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 09:05:27,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:28,260 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:28,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:28,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:28,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:05:28,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:28,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:28,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:28,295 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 09:05:28,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117093485] [2020-10-14 09:05:28,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:28,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:05:28,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045316546] [2020-10-14 09:05:28,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:05:28,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:28,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:05:28,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:05:28,297 INFO L87 Difference]: Start difference. First operand 2799 states and 3742 transitions. Second operand 9 states. [2020-10-14 09:05:28,700 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-14 09:05:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:30,758 INFO L93 Difference]: Finished difference Result 3805 states and 5123 transitions. [2020-10-14 09:05:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:05:30,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-14 09:05:30,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:30,762 INFO L225 Difference]: With dead ends: 3805 [2020-10-14 09:05:30,763 INFO L226 Difference]: Without dead ends: 3791 [2020-10-14 09:05:30,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:05:30,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2020-10-14 09:05:31,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 2785. [2020-10-14 09:05:31,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2020-10-14 09:05:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3726 transitions. [2020-10-14 09:05:31,017 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3726 transitions. Word has length 61 [2020-10-14 09:05:31,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:31,017 INFO L479 AbstractCegarLoop]: Abstraction has 2785 states and 3726 transitions. [2020-10-14 09:05:31,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:05:31,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3726 transitions. [2020-10-14 09:05:31,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:05:31,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:31,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:31,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:05:31,022 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:31,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:31,022 INFO L82 PathProgramCache]: Analyzing trace with hash 232142623, now seen corresponding path program 1 times [2020-10-14 09:05:31,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:31,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070592076] [2020-10-14 09:05:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:31,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:31,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:32,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:32,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:05:32,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:05:32,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1747 [2020-10-14 09:05:32,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:32,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 09:05:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 09:05:32,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:33,174 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:33,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:33,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:33,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:33,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:33,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:05:33,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:33,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:33,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:33,198 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 09:05:33,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070592076] [2020-10-14 09:05:33,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:33,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:33,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464772264] [2020-10-14 09:05:33,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:33,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:33,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:33,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:33,200 INFO L87 Difference]: Start difference. First operand 2785 states and 3726 transitions. Second operand 4 states. [2020-10-14 09:05:33,625 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 09:05:35,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:35,075 INFO L93 Difference]: Finished difference Result 6096 states and 8265 transitions. [2020-10-14 09:05:35,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:35,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-14 09:05:35,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:35,080 INFO L225 Difference]: With dead ends: 6096 [2020-10-14 09:05:35,081 INFO L226 Difference]: Without dead ends: 4185 [2020-10-14 09:05:35,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2020-10-14 09:05:35,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 4183. [2020-10-14 09:05:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4183 states. [2020-10-14 09:05:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4183 states to 4183 states and 5570 transitions. [2020-10-14 09:05:35,507 INFO L78 Accepts]: Start accepts. Automaton has 4183 states and 5570 transitions. Word has length 70 [2020-10-14 09:05:35,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:35,507 INFO L479 AbstractCegarLoop]: Abstraction has 4183 states and 5570 transitions. [2020-10-14 09:05:35,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:35,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4183 states and 5570 transitions. [2020-10-14 09:05:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:05:35,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:35,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:35,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 09:05:35,511 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:35,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:35,511 INFO L82 PathProgramCache]: Analyzing trace with hash 122517078, now seen corresponding path program 1 times [2020-10-14 09:05:35,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:35,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651628486] [2020-10-14 09:05:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:35,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:35,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:35,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:36,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:36,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:36,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:05:36,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:05:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-10-14 09:05:36,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:36,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:36,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:36,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 09:05:36,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:05:36,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:37,303 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:37,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:37,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:37,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:37,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:37,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:05:37,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:37,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:37,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:37,339 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 09:05:37,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651628486] [2020-10-14 09:05:37,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:37,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:37,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528981566] [2020-10-14 09:05:37,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:37,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:37,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:37,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:37,341 INFO L87 Difference]: Start difference. First operand 4183 states and 5570 transitions. Second operand 4 states. [2020-10-14 09:05:37,750 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-14 09:05:39,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:39,751 INFO L93 Difference]: Finished difference Result 10487 states and 14096 transitions. [2020-10-14 09:05:39,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:39,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-14 09:05:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:39,760 INFO L225 Difference]: With dead ends: 10487 [2020-10-14 09:05:39,760 INFO L226 Difference]: Without dead ends: 7195 [2020-10-14 09:05:39,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:39,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7195 states. [2020-10-14 09:05:40,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7195 to 6705. [2020-10-14 09:05:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6705 states. [2020-10-14 09:05:40,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6705 states to 6705 states and 8973 transitions. [2020-10-14 09:05:40,469 INFO L78 Accepts]: Start accepts. Automaton has 6705 states and 8973 transitions. Word has length 71 [2020-10-14 09:05:40,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:40,469 INFO L479 AbstractCegarLoop]: Abstraction has 6705 states and 8973 transitions. [2020-10-14 09:05:40,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:40,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6705 states and 8973 transitions. [2020-10-14 09:05:40,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 09:05:40,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:40,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:40,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 09:05:40,473 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:40,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:40,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1608476354, now seen corresponding path program 1 times [2020-10-14 09:05:40,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:40,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813940468] [2020-10-14 09:05:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:40,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:40,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:40,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:40,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:40,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:41,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:41,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 09:05:41,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:05:41,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-10-14 09:05:41,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:41,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 09:05:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 09:05:41,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:41,939 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:41,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:41,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:41,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:41,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:41,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:41,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:05:41,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:41,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:41,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:41,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:41,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:41,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:41,969 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 09:05:41,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813940468] [2020-10-14 09:05:41,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:41,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:41,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160629604] [2020-10-14 09:05:41,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:41,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:41,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:41,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:41,971 INFO L87 Difference]: Start difference. First operand 6705 states and 8973 transitions. Second operand 4 states. [2020-10-14 09:05:42,368 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-14 09:05:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:45,155 INFO L93 Difference]: Finished difference Result 17821 states and 23955 transitions. [2020-10-14 09:05:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:45,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-14 09:05:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:45,169 INFO L225 Difference]: With dead ends: 17821 [2020-10-14 09:05:45,169 INFO L226 Difference]: Without dead ends: 12007 [2020-10-14 09:05:45,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:45,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12007 states. [2020-10-14 09:05:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12007 to 11137. [2020-10-14 09:05:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11137 states. [2020-10-14 09:05:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11137 states to 11137 states and 14925 transitions. [2020-10-14 09:05:46,457 INFO L78 Accepts]: Start accepts. Automaton has 11137 states and 14925 transitions. Word has length 72 [2020-10-14 09:05:46,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:46,457 INFO L479 AbstractCegarLoop]: Abstraction has 11137 states and 14925 transitions. [2020-10-14 09:05:46,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 11137 states and 14925 transitions. [2020-10-14 09:05:46,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 09:05:46,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:46,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:46,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 09:05:46,460 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:46,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1205770587, now seen corresponding path program 1 times [2020-10-14 09:05:46,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:46,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223259796] [2020-10-14 09:05:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:46,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:47,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:47,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 09:05:47,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:05:47,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-10-14 09:05:47,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:47,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:05:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 09:05:47,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:47,719 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:47,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:47,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:47,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:47,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:05:47,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:47,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:47,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:47,754 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 09:05:47,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223259796] [2020-10-14 09:05:47,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:47,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:05:47,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370144663] [2020-10-14 09:05:47,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:47,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:47,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:47,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:47,755 INFO L87 Difference]: Start difference. First operand 11137 states and 14925 transitions. Second operand 6 states. [2020-10-14 09:05:50,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:50,873 INFO L93 Difference]: Finished difference Result 12695 states and 16990 transitions. [2020-10-14 09:05:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:05:50,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-14 09:05:50,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:50,889 INFO L225 Difference]: With dead ends: 12695 [2020-10-14 09:05:50,889 INFO L226 Difference]: Without dead ends: 10707 [2020-10-14 09:05:50,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10707 states. [2020-10-14 09:05:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10707 to 10303. [2020-10-14 09:05:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10303 states. [2020-10-14 09:05:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10303 states to 10303 states and 13790 transitions. [2020-10-14 09:05:52,268 INFO L78 Accepts]: Start accepts. Automaton has 10303 states and 13790 transitions. Word has length 73 [2020-10-14 09:05:52,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:52,268 INFO L479 AbstractCegarLoop]: Abstraction has 10303 states and 13790 transitions. [2020-10-14 09:05:52,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:05:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 10303 states and 13790 transitions. [2020-10-14 09:05:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 09:05:52,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:52,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:52,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 09:05:52,271 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:52,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:52,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1983264854, now seen corresponding path program 1 times [2020-10-14 09:05:52,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:52,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185577107] [2020-10-14 09:05:52,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:52,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:52,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:52,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:53,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 09:05:53,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:05:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1244 [2020-10-14 09:05:53,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:53,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 09:05:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 09:05:53,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:53,915 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:53,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:53,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:53,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:53,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:53,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:05:53,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:53,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:53,943 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 09:05:53,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185577107] [2020-10-14 09:05:53,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:53,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:53,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488478862] [2020-10-14 09:05:53,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:53,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:53,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:53,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:53,944 INFO L87 Difference]: Start difference. First operand 10303 states and 13790 transitions. Second operand 4 states. [2020-10-14 09:05:54,371 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-14 09:05:57,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:57,959 INFO L93 Difference]: Finished difference Result 26211 states and 34952 transitions. [2020-10-14 09:05:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:57,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-14 09:05:57,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:57,978 INFO L225 Difference]: With dead ends: 26211 [2020-10-14 09:05:57,978 INFO L226 Difference]: Without dead ends: 16540 [2020-10-14 09:05:57,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:58,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16540 states. [2020-10-14 09:06:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16540 to 15042. [2020-10-14 09:06:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15042 states. [2020-10-14 09:06:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15042 states to 15042 states and 19906 transitions. [2020-10-14 09:06:00,643 INFO L78 Accepts]: Start accepts. Automaton has 15042 states and 19906 transitions. Word has length 74 [2020-10-14 09:06:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:00,643 INFO L479 AbstractCegarLoop]: Abstraction has 15042 states and 19906 transitions. [2020-10-14 09:06:00,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:06:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 15042 states and 19906 transitions. [2020-10-14 09:06:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 09:06:00,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:00,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:06:00,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 09:06:00,645 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:00,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:00,645 INFO L82 PathProgramCache]: Analyzing trace with hash 763825735, now seen corresponding path program 1 times [2020-10-14 09:06:00,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:00,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597831156] [2020-10-14 09:06:00,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:00,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:00,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:00,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:03,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:03,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 09:06:03,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:06:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2389 [2020-10-14 09:06:03,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:03,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:06:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 09:06:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:06:03,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:03,474 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:06:03,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:03,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:03,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:03,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:03,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:06:03,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:03,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:03,498 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 09:06:03,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597831156] [2020-10-14 09:06:03,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:03,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:06:03,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396533664] [2020-10-14 09:06:03,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:06:03,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:03,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:06:03,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:06:03,500 INFO L87 Difference]: Start difference. First operand 15042 states and 19906 transitions. Second operand 6 states. [2020-10-14 09:06:08,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:08,342 INFO L93 Difference]: Finished difference Result 26522 states and 34575 transitions. [2020-10-14 09:06:08,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:06:08,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-14 09:06:08,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:08,370 INFO L225 Difference]: With dead ends: 26522 [2020-10-14 09:06:08,371 INFO L226 Difference]: Without dead ends: 26520 [2020-10-14 09:06:08,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:06:08,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26520 states. [2020-10-14 09:06:10,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26520 to 15882. [2020-10-14 09:06:10,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15882 states. [2020-10-14 09:06:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15882 states to 15882 states and 20746 transitions. [2020-10-14 09:06:10,766 INFO L78 Accepts]: Start accepts. Automaton has 15882 states and 20746 transitions. Word has length 76 [2020-10-14 09:06:10,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:10,766 INFO L479 AbstractCegarLoop]: Abstraction has 15882 states and 20746 transitions. [2020-10-14 09:06:10,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 15882 states and 20746 transitions. [2020-10-14 09:06:10,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 09:06:10,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:10,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:06:10,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 09:06:10,768 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:10,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:10,769 INFO L82 PathProgramCache]: Analyzing trace with hash 482584786, now seen corresponding path program 1 times [2020-10-14 09:06:10,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:10,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710454651] [2020-10-14 09:06:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:10,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:12,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:12,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 09:06:12,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:06:12,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-14 09:06:12,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:12,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:12,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:06:12,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 09:06:12,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:06:12,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:12,908 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:06:12,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:12,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:12,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:12,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:12,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:12,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:06:12,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:12,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:12,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:12,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:12,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:12,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:12,935 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 09:06:12,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710454651] [2020-10-14 09:06:12,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:12,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:06:12,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952007641] [2020-10-14 09:06:12,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:06:12,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:12,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:06:12,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:06:12,938 INFO L87 Difference]: Start difference. First operand 15882 states and 20746 transitions. Second operand 4 states. [2020-10-14 09:06:13,362 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 09:06:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:17,872 INFO L93 Difference]: Finished difference Result 38014 states and 49452 transitions. [2020-10-14 09:06:17,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:06:17,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-14 09:06:17,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:17,894 INFO L225 Difference]: With dead ends: 38014 [2020-10-14 09:06:17,895 INFO L226 Difference]: Without dead ends: 22764 [2020-10-14 09:06:17,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:06:17,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22764 states. [2020-10-14 09:06:21,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22764 to 22482. [2020-10-14 09:06:21,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22482 states. [2020-10-14 09:06:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22482 states to 22482 states and 28766 transitions. [2020-10-14 09:06:21,230 INFO L78 Accepts]: Start accepts. Automaton has 22482 states and 28766 transitions. Word has length 77 [2020-10-14 09:06:21,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:21,230 INFO L479 AbstractCegarLoop]: Abstraction has 22482 states and 28766 transitions. [2020-10-14 09:06:21,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:06:21,230 INFO L276 IsEmpty]: Start isEmpty. Operand 22482 states and 28766 transitions. [2020-10-14 09:06:21,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 09:06:21,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:21,237 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 09:06:21,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 09:06:21,237 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:21,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:21,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1422920818, now seen corresponding path program 1 times [2020-10-14 09:06:21,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:21,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331611479] [2020-10-14 09:06:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:21,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:21,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:21,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:26,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:26,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 09:06:26,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:06:26,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 09:06:26,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:26,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:26,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:06:26,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:06:26,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 09:06:26,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:26,685 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:06:26,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:26,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:26,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:26,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:26,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:26,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:06:26,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:26,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:26,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:26,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:26,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331611479] [2020-10-14 09:06:26,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:06:26,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 09:06:26,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462368519] [2020-10-14 09:06:26,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:06:26,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:26,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:06:26,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:06:26,724 INFO L87 Difference]: Start difference. First operand 22482 states and 28766 transitions. Second operand 6 states. [2020-10-14 09:06:27,141 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-14 09:06:34,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:34,724 INFO L93 Difference]: Finished difference Result 60438 states and 77551 transitions. [2020-10-14 09:06:34,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:06:34,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-14 09:06:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:34,765 INFO L225 Difference]: With dead ends: 60438 [2020-10-14 09:06:34,765 INFO L226 Difference]: Without dead ends: 38588 [2020-10-14 09:06:34,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:06:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38588 states. [2020-10-14 09:06:39,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38588 to 35810. [2020-10-14 09:06:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35810 states. [2020-10-14 09:06:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35810 states to 35810 states and 45614 transitions. [2020-10-14 09:06:40,033 INFO L78 Accepts]: Start accepts. Automaton has 35810 states and 45614 transitions. Word has length 96 [2020-10-14 09:06:40,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:40,034 INFO L479 AbstractCegarLoop]: Abstraction has 35810 states and 45614 transitions. [2020-10-14 09:06:40,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand 35810 states and 45614 transitions. [2020-10-14 09:06:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 09:06:40,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:40,041 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 09:06:40,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 09:06:40,041 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:40,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:40,041 INFO L82 PathProgramCache]: Analyzing trace with hash 740505501, now seen corresponding path program 1 times [2020-10-14 09:06:40,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:40,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385092145] [2020-10-14 09:06:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:40,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:40,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:40,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:40,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:41,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:41,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:42,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:42,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking...