/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:50:09,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:50:09,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:50:09,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:50:09,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:50:09,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:50:09,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:50:09,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:50:09,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:50:09,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:50:09,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:50:09,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:50:09,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:50:09,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:50:09,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:50:09,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:50:09,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:50:09,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:50:09,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:50:09,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:50:09,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:50:09,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:50:09,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:50:09,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:50:09,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:50:09,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:50:09,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:50:09,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:50:09,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:50:09,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:50:09,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:50:09,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:50:09,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:50:09,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:50:09,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:50:09,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:50:09,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:50:09,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:50:09,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:50:09,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:50:09,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:50:09,847 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 [2020-10-28 17:50:09,911 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:50:09,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:50:09,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:50:09,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:50:09,914 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:50:09,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:50:09,914 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:50:09,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:50:09,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:50:09,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:50:09,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:50:09,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:50:09,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:50:09,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:50:09,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:50:09,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:50:09,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:50:09,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:50:09,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:50:09,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:50:09,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:50:09,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:50:09,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:50:09,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:50:09,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:50:09,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:50:09,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:50:09,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:50:09,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:50:09,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:50:10,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:50:10,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:50:10,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:50:10,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:50:10,420 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:50:10,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2020-10-28 17:50:10,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f56d224a5/ad87d4878d1642408d86909576a21602/FLAG2d594fb58 [2020-10-28 17:50:11,202 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:50:11,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2020-10-28 17:50:11,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f56d224a5/ad87d4878d1642408d86909576a21602/FLAG2d594fb58 [2020-10-28 17:50:11,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f56d224a5/ad87d4878d1642408d86909576a21602 [2020-10-28 17:50:11,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:50:11,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:50:11,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:50:11,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:50:11,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:50:11,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:50:11" (1/1) ... [2020-10-28 17:50:11,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@369f7adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:11, skipping insertion in model container [2020-10-28 17:50:11,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:50:11" (1/1) ... [2020-10-28 17:50:11,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:50:11,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:50:11,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:50:11,807 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:50:11,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:50:11,880 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:50:11,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:11 WrapperNode [2020-10-28 17:50:11,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:50:11,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:50:11,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:50:11,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:50:11,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:11" (1/1) ... [2020-10-28 17:50:11,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:11" (1/1) ... [2020-10-28 17:50:11,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:11" (1/1) ... [2020-10-28 17:50:11,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:11" (1/1) ... [2020-10-28 17:50:11,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:11" (1/1) ... [2020-10-28 17:50:11,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:11" (1/1) ... [2020-10-28 17:50:11,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:11" (1/1) ... [2020-10-28 17:50:11,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:50:11,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:50:11,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:50:11,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:50:11,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:50:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:50:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:50:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:50:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:50:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:50:12,048 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:50:12,048 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:50:12,048 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:50:12,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:50:12,048 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:50:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:50:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:50:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:50:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:50:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:50:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:50:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:50:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:50:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:50:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:50:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:50:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:50:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:50:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:50:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:50:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:50:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:50:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:50:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:50:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:50:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:50:12,911 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:50:12,912 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:50:12,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:50:12 BoogieIcfgContainer [2020-10-28 17:50:12,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:50:12,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:50:12,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:50:12,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:50:12,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:50:11" (1/3) ... [2020-10-28 17:50:12,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192a56c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:50:12, skipping insertion in model container [2020-10-28 17:50:12,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:11" (2/3) ... [2020-10-28 17:50:12,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192a56c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:50:12, skipping insertion in model container [2020-10-28 17:50:12,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:50:12" (3/3) ... [2020-10-28 17:50:12,927 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2020-10-28 17:50:12,940 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:50:12,946 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:50:12,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:50:13,010 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:50:13,010 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:50:13,010 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:50:13,011 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:50:13,011 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:50:13,011 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:50:13,011 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:50:13,011 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:50:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-10-28 17:50:13,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 17:50:13,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:13,056 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] [2020-10-28 17:50:13,056 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:13,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:13,066 INFO L82 PathProgramCache]: Analyzing trace with hash 179197728, now seen corresponding path program 1 times [2020-10-28 17:50:13,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:13,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333986604] [2020-10-28 17:50:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:13,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:13,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:50:13,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:13,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-28 17:50:13,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:13,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:50:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:13,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:50:13,889 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:50:13,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:13,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:13,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:13,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:13,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:50:13,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:13,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:13,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:13,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:13,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:13,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:13,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:13,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:13,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:50:13,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:13,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:13,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:13,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:50:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:13,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:13,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:13,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:13,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:13,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:50:13,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:13,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:13,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:14,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:50:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:14,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:14,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:14,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:14,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:14,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:14,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:14,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:14,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:14,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 17:50:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:14,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:14,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:14,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:14,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:14,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:14,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:14,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:14,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:14,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 17:50:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:14,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:14,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:14,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:14,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:14,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:50:14,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:14,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:14,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:14,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:50:14,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:14,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:50:14,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333986604] [2020-10-28 17:50:14,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:50:14,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:50:14,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598965612] [2020-10-28 17:50:14,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:50:14,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:14,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:50:14,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:50:14,145 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 6 states. [2020-10-28 17:50:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:14,846 INFO L93 Difference]: Finished difference Result 190 states and 274 transitions. [2020-10-28 17:50:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:50:14,849 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-28 17:50:14,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:14,860 INFO L225 Difference]: With dead ends: 190 [2020-10-28 17:50:14,860 INFO L226 Difference]: Without dead ends: 105 [2020-10-28 17:50:14,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:50:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-28 17:50:14,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2020-10-28 17:50:14,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 17:50:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 149 transitions. [2020-10-28 17:50:14,923 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 149 transitions. Word has length 50 [2020-10-28 17:50:14,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:14,924 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 149 transitions. [2020-10-28 17:50:14,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:50:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 149 transitions. [2020-10-28 17:50:14,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 17:50:14,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:14,927 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] [2020-10-28 17:50:14,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:50:14,927 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:14,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:14,928 INFO L82 PathProgramCache]: Analyzing trace with hash 838729250, now seen corresponding path program 1 times [2020-10-28 17:50:14,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:14,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146064420] [2020-10-28 17:50:14,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:15,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:15,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:50:15,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:15,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-28 17:50:15,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:15,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:50:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:50:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:15,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:15,727 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:50:15,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:15,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:15,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:15,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:15,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:15,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:50:15,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:15,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:15,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:15,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:15,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:50:15,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:15,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:15,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:50:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:15,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:15,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:15,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:50:15,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:15,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:15,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:15,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:50:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:15,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:15,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:15,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:50:15,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:15,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:15,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 17:50:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:15,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:15,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:15,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:15,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:15,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:50:15,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:15,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:15,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:15,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 17:50:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:15,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:15,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:15,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:15,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:50:15,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:15,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:50:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:15,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:50:15,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146064420] [2020-10-28 17:50:15,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:50:15,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:50:15,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713227018] [2020-10-28 17:50:15,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:50:15,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:15,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:50:15,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:50:15,944 INFO L87 Difference]: Start difference. First operand 102 states and 149 transitions. Second operand 10 states. [2020-10-28 17:50:16,105 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 17:50:16,240 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 17:50:17,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:17,239 INFO L93 Difference]: Finished difference Result 191 states and 273 transitions. [2020-10-28 17:50:17,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:50:17,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-28 17:50:17,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:17,243 INFO L225 Difference]: With dead ends: 191 [2020-10-28 17:50:17,243 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 17:50:17,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:50:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 17:50:17,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2020-10-28 17:50:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 17:50:17,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-10-28 17:50:17,266 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 50 [2020-10-28 17:50:17,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:17,266 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-10-28 17:50:17,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:50:17,266 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-10-28 17:50:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:50:17,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:17,269 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] [2020-10-28 17:50:17,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:50:17,269 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:17,270 INFO L82 PathProgramCache]: Analyzing trace with hash -2055696852, now seen corresponding path program 1 times [2020-10-28 17:50:17,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:17,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35133880] [2020-10-28 17:50:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:17,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:22,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:22,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 17:50:22,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:50:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:50:22,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:22,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:22,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:22,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:50:22,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 17:50:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:22,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:22,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:22,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:22,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:22,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:22,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:50:22,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:22,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:22,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:22,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:22,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:50:22,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:22,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:50:22,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:22,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:50:22,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:22,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:50:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:22,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:22,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:22,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:22,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:50:22,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:22,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:22,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:22,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:22,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:22,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:22,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:50:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:22,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:22,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:22,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:22,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:50:22,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:22,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:22,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:50:22,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:50:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:22,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:22,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:22,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:22,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:50:22,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:22,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:22,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 17:50:22,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:50:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:22,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:22,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:22,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:22,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:22,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:50:22,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:22,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:50:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:22,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:50:22,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35133880] [2020-10-28 17:50:22,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:50:22,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:50:22,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586987801] [2020-10-28 17:50:22,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:50:22,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:22,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:50:22,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:50:22,736 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 9 states. [2020-10-28 17:50:22,886 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:50:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:24,041 INFO L93 Difference]: Finished difference Result 237 states and 321 transitions. [2020-10-28 17:50:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:50:24,045 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-10-28 17:50:24,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:24,049 INFO L225 Difference]: With dead ends: 237 [2020-10-28 17:50:24,049 INFO L226 Difference]: Without dead ends: 166 [2020-10-28 17:50:24,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:50:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-28 17:50:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 158. [2020-10-28 17:50:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-28 17:50:24,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 211 transitions. [2020-10-28 17:50:24,096 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 211 transitions. Word has length 66 [2020-10-28 17:50:24,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:24,098 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 211 transitions. [2020-10-28 17:50:24,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:50:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 211 transitions. [2020-10-28 17:50:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 17:50:24,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:24,106 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] [2020-10-28 17:50:24,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:50:24,106 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:24,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:24,107 INFO L82 PathProgramCache]: Analyzing trace with hash -455179363, now seen corresponding path program 1 times [2020-10-28 17:50:24,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:24,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339966383] [2020-10-28 17:50:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:24,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:24,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:24,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:25,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:25,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 17:50:25,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:50:25,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1824 [2020-10-28 17:50:25,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:25,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:50:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 17:50:25,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:26,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:26,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:26,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:26,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:26,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:26,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:26,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:26,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:26,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:50:26,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:26,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:26,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:26,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:50:26,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:26,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:50:26,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:26,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:26,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:26,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:26,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:50:26,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:26,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:50:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:26,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:26,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:26,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:26,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:50:26,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:26,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:26,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:26,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:50:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:26,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:26,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:26,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:26,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:26,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:50:26,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:26,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:26,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:26,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:26,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:50:26,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:50:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:26,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:26,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:26,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:26,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:50:26,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:26,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:50:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:26,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:50:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:26,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:26,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:26,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:26,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:50:26,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:26,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:50:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:26,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:50:26,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339966383] [2020-10-28 17:50:26,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:50:26,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:50:26,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544800783] [2020-10-28 17:50:26,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:50:26,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:26,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:50:26,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:50:26,331 INFO L87 Difference]: Start difference. First operand 158 states and 211 transitions. Second operand 9 states. [2020-10-28 17:50:26,484 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:50:27,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:27,752 INFO L93 Difference]: Finished difference Result 396 states and 543 transitions. [2020-10-28 17:50:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:50:27,754 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-28 17:50:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:27,757 INFO L225 Difference]: With dead ends: 396 [2020-10-28 17:50:27,757 INFO L226 Difference]: Without dead ends: 269 [2020-10-28 17:50:27,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:50:27,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-28 17:50:27,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 258. [2020-10-28 17:50:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-28 17:50:27,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 349 transitions. [2020-10-28 17:50:27,799 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 349 transitions. Word has length 67 [2020-10-28 17:50:27,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:27,799 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 349 transitions. [2020-10-28 17:50:27,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:50:27,800 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 349 transitions. [2020-10-28 17:50:27,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 17:50:27,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:27,801 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] [2020-10-28 17:50:27,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:50:27,802 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:27,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:27,802 INFO L82 PathProgramCache]: Analyzing trace with hash -531024472, now seen corresponding path program 1 times [2020-10-28 17:50:27,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:27,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478920103] [2020-10-28 17:50:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:27,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:27,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:28,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:28,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:50:28,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:50:28,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-28 17:50:28,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:28,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:28,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:28,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:50:28,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:50:28,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:28,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:28,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:28,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:28,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:28,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:28,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:28,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:28,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:28,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:28,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:28,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:28,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:50:28,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:50:28,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:28,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:28,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:50:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:28,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:28,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:28,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:28,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:50:28,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:28,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:28,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:28,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:28,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:29,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:50:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:29,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:29,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:29,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:29,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:50:29,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:29,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:50:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:29,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:50:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:29,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:29,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:29,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:29,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:29,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:50:29,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:29,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:50:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:50:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:29,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:29,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:29,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:29,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:29,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:50:29,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:29,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:50:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:29,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:50:29,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478920103] [2020-10-28 17:50:29,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:50:29,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:50:29,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697835205] [2020-10-28 17:50:29,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:50:29,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:29,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:50:29,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:50:29,106 INFO L87 Difference]: Start difference. First operand 258 states and 349 transitions. Second operand 9 states. [2020-10-28 17:50:29,248 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:50:30,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:30,396 INFO L93 Difference]: Finished difference Result 676 states and 925 transitions. [2020-10-28 17:50:30,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:50:30,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-28 17:50:30,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:30,401 INFO L225 Difference]: With dead ends: 676 [2020-10-28 17:50:30,401 INFO L226 Difference]: Without dead ends: 449 [2020-10-28 17:50:30,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:50:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-10-28 17:50:30,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 434. [2020-10-28 17:50:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-10-28 17:50:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 585 transitions. [2020-10-28 17:50:30,499 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 585 transitions. Word has length 68 [2020-10-28 17:50:30,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:30,499 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 585 transitions. [2020-10-28 17:50:30,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:50:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 585 transitions. [2020-10-28 17:50:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 17:50:30,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:30,505 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] [2020-10-28 17:50:30,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:50:30,506 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:30,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1290561189, now seen corresponding path program 1 times [2020-10-28 17:50:30,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:30,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233953476] [2020-10-28 17:50:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:30,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:31,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:31,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 17:50:31,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:50:31,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1408 [2020-10-28 17:50:31,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:31,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:31,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:50:31,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 17:50:31,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:32,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:32,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:32,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:32,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:32,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:50:32,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:32,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:32,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:32,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:32,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:32,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:32,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:50:32,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:32,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:50:32,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:32,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:32,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:32,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:50:32,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:32,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:50:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:32,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:32,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:32,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:32,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:50:32,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:32,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:50:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:50:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:32,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:50:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:32,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:32,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:32,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:32,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:32,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:50:32,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:32,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:50:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:50:32,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:32,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:50:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:32,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:32,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:32,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:32,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:32,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:50:32,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:32,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:50:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:32,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:32,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:50:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:32,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:32,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:32,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:32,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:32,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:50:32,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:32,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:50:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:32,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:50:32,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233953476] [2020-10-28 17:50:32,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:50:32,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:50:32,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125111071] [2020-10-28 17:50:32,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:50:32,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:32,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:50:32,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:50:32,351 INFO L87 Difference]: Start difference. First operand 434 states and 585 transitions. Second operand 12 states. [2020-10-28 17:50:32,550 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-28 17:50:32,723 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-28 17:50:33,024 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:50:33,366 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:50:33,511 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:50:33,649 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-28 17:50:34,232 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-28 17:50:34,375 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-28 17:50:34,521 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-28 17:50:34,672 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-28 17:50:34,841 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 17:50:34,993 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-28 17:50:38,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:38,626 INFO L93 Difference]: Finished difference Result 3057 states and 4333 transitions. [2020-10-28 17:50:38,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-28 17:50:38,627 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-28 17:50:38,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:38,662 INFO L225 Difference]: With dead ends: 3057 [2020-10-28 17:50:38,662 INFO L226 Difference]: Without dead ends: 2654 [2020-10-28 17:50:38,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=594, Invalid=2828, Unknown=0, NotChecked=0, Total=3422 [2020-10-28 17:50:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2020-10-28 17:50:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2598. [2020-10-28 17:50:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2598 states. [2020-10-28 17:50:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 3409 transitions. [2020-10-28 17:50:39,003 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 3409 transitions. Word has length 69 [2020-10-28 17:50:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:39,004 INFO L481 AbstractCegarLoop]: Abstraction has 2598 states and 3409 transitions. [2020-10-28 17:50:39,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:50:39,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 3409 transitions. [2020-10-28 17:50:39,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 17:50:39,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:39,007 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] [2020-10-28 17:50:39,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:50:39,007 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:39,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:39,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1684443229, now seen corresponding path program 1 times [2020-10-28 17:50:39,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:39,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915126659] [2020-10-28 17:50:39,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:39,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:39,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 17:50:39,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:39,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-28 17:50:39,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:39,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:39,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:50:39,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:50:39,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 17:50:39,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:39,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:39,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:39,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:39,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:39,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:39,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:50:39,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:39,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:39,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:39,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:39,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:39,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:50:39,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:50:39,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:39,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:50:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:39,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:50:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:39,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:39,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:39,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:50:39,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:39,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:50:39,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:39,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:39,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:39,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:50:39,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:39,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:50:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:39,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:39,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:39,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:39,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:50:39,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:39,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:50:39,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:50:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:39,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:39,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:39,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:39,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:39,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:50:39,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:39,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:50:39,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:50:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:39,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:39,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:39,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:39,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:39,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:39,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:50:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:50:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:50:39,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915126659] [2020-10-28 17:50:39,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:50:39,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 17:50:39,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798175003] [2020-10-28 17:50:39,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:50:39,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:39,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:50:39,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:50:39,928 INFO L87 Difference]: Start difference. First operand 2598 states and 3409 transitions. Second operand 13 states. [2020-10-28 17:50:40,086 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:50:40,256 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 17:50:40,409 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 17:50:41,661 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2020-10-28 17:50:42,548 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 122 [2020-10-28 17:50:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:44,402 INFO L93 Difference]: Finished difference Result 11636 states and 15335 transitions. [2020-10-28 17:50:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 17:50:44,402 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 70 [2020-10-28 17:50:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:44,462 INFO L225 Difference]: With dead ends: 11636 [2020-10-28 17:50:44,462 INFO L226 Difference]: Without dead ends: 9121 [2020-10-28 17:50:44,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 17:50:44,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9121 states. [2020-10-28 17:50:45,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9121 to 8850. [2020-10-28 17:50:45,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8850 states. [2020-10-28 17:50:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8850 states to 8850 states and 11593 transitions. [2020-10-28 17:50:45,448 INFO L78 Accepts]: Start accepts. Automaton has 8850 states and 11593 transitions. Word has length 70 [2020-10-28 17:50:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:45,448 INFO L481 AbstractCegarLoop]: Abstraction has 8850 states and 11593 transitions. [2020-10-28 17:50:45,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:50:45,448 INFO L276 IsEmpty]: Start isEmpty. Operand 8850 states and 11593 transitions. [2020-10-28 17:50:45,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 17:50:45,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:45,450 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] [2020-10-28 17:50:45,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:50:45,450 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:45,451 INFO L82 PathProgramCache]: Analyzing trace with hash -845945270, now seen corresponding path program 1 times [2020-10-28 17:50:45,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:45,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360183449] [2020-10-28 17:50:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:45,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:45,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:45,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 17:50:45,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:45,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-28 17:50:45,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:45,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:45,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:50:45,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 17:50:45,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:50:45,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:45,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:45,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:45,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:45,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:45,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:50:45,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:45,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:45,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:45,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:45,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:45,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:45,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:50:45,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:45,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:50:45,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:45,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:46,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:50:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:46,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:46,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:46,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:50:46,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:50:46,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:46,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:46,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:46,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:50:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:46,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:46,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:46,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:50:46,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:46,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:46,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:50:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:46,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:46,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:46,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:46,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:50:46,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:46,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:46,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:46,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:50:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:46,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:46,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:46,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:50:46,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:46,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:46,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:50:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:50:46,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360183449] [2020-10-28 17:50:46,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:50:46,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:50:46,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748039840] [2020-10-28 17:50:46,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:50:46,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:46,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:50:46,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:50:46,122 INFO L87 Difference]: Start difference. First operand 8850 states and 11593 transitions. Second operand 12 states. [2020-10-28 17:50:46,836 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 17:50:47,018 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 17:50:47,169 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:50:47,306 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-28 17:50:48,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:48,701 INFO L93 Difference]: Finished difference Result 12427 states and 16961 transitions. [2020-10-28 17:50:48,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:50:48,701 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-28 17:50:48,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:48,803 INFO L225 Difference]: With dead ends: 12427 [2020-10-28 17:50:48,803 INFO L226 Difference]: Without dead ends: 12424 [2020-10-28 17:50:48,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:50:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12424 states. [2020-10-28 17:50:49,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12424 to 10578. [2020-10-28 17:50:49,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10578 states. [2020-10-28 17:50:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10578 states to 10578 states and 13321 transitions. [2020-10-28 17:50:50,006 INFO L78 Accepts]: Start accepts. Automaton has 10578 states and 13321 transitions. Word has length 71 [2020-10-28 17:50:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:50,006 INFO L481 AbstractCegarLoop]: Abstraction has 10578 states and 13321 transitions. [2020-10-28 17:50:50,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:50:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 10578 states and 13321 transitions. [2020-10-28 17:50:50,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 17:50:50,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:50,008 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] [2020-10-28 17:50:50,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:50:50,008 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:50,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:50,009 INFO L82 PathProgramCache]: Analyzing trace with hash -243671259, now seen corresponding path program 1 times [2020-10-28 17:50:50,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:50,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717674331] [2020-10-28 17:50:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:50,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:50,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:50,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 17:50:50,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:50,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 17:50:50,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:50,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:50:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 17:50:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:50,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:50,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:50,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:50,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:50,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:50,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:50,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:50,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:50,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:50,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:50:50,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:50,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:50:50,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:50,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:50:50,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:50,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:50:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:50,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:50,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:50:50,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:50,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:50:50,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:50,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:50,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:50:50,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:50,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:50:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:50,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:50,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:50,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:50,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:50,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:50:50,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:50,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:50:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:50,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:50:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:50,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:50,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:50,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:50,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:50:50,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:50,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:50:50,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:50,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:50:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:50,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:50,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:50,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:50,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:50:50,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:50,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:50:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:50:50,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717674331] [2020-10-28 17:50:50,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:50:50,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:50:50,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509454408] [2020-10-28 17:50:50,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:50:50,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:50,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:50:50,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:50:50,530 INFO L87 Difference]: Start difference. First operand 10578 states and 13321 transitions. Second operand 9 states. [2020-10-28 17:50:50,711 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:50:51,681 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:50:53,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:53,925 INFO L93 Difference]: Finished difference Result 31085 states and 39493 transitions. [2020-10-28 17:50:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:50:53,926 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-28 17:50:53,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:54,061 INFO L225 Difference]: With dead ends: 31085 [2020-10-28 17:50:54,061 INFO L226 Difference]: Without dead ends: 20590 [2020-10-28 17:50:54,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:50:54,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20590 states. [2020-10-28 17:50:55,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20590 to 20330. [2020-10-28 17:50:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20330 states. [2020-10-28 17:50:56,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20330 states to 20330 states and 25649 transitions. [2020-10-28 17:50:56,049 INFO L78 Accepts]: Start accepts. Automaton has 20330 states and 25649 transitions. Word has length 72 [2020-10-28 17:50:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:56,049 INFO L481 AbstractCegarLoop]: Abstraction has 20330 states and 25649 transitions. [2020-10-28 17:50:56,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:50:56,049 INFO L276 IsEmpty]: Start isEmpty. Operand 20330 states and 25649 transitions. [2020-10-28 17:50:56,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 17:50:56,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:56,060 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:50:56,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:50:56,060 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:56,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:56,061 INFO L82 PathProgramCache]: Analyzing trace with hash 988427042, now seen corresponding path program 1 times [2020-10-28 17:50:56,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:56,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993611028] [2020-10-28 17:50:56,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:58,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:58,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 17:50:58,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:50:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2866 [2020-10-28 17:50:58,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:58,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:50:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:50:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 17:50:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:59,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:59,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:59,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:59,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:59,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:59,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:59,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:59,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:59,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:50:59,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:50:59,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:59,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:50:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:59,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:50:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:59,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:59,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:59,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:50:59,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:59,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:50:59,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:59,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:50:59,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:59,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:50:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:59,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:59,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:59,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:59,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:50:59,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:59,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:59,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:59,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:59,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:50:59,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:59,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:50:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:59,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:59,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:59,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:59,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:59,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:50:59,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:59,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:59,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:59,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:50:59,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:59,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:50:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:59,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:59,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:59,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:59,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:50:59,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:59,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:59,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:59,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:50:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:59,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:59,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:50:59,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:59,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:50:59,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:59,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:59,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:59,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:50:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:59,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:59,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:59,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:59,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:50:59,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:59,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:50:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:59,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:59,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:50:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:59,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:59,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:59,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:59,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:50:59,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:59,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:59,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:50:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:59,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:59,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:59,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:59,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:50:59,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:59,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:59,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:59,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 17:50:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:59,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:59,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:59,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:59,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:50:59,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:59,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:59,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:59,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:50:59,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:59,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 17:50:59,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993611028] [2020-10-28 17:50:59,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:50:59,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:50:59,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048794133] [2020-10-28 17:50:59,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:50:59,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:59,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:50:59,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:50:59,420 INFO L87 Difference]: Start difference. First operand 20330 states and 25649 transitions. Second operand 12 states. [2020-10-28 17:50:59,550 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:51:00,160 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:51:02,403 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:51:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:51:03,881 INFO L93 Difference]: Finished difference Result 46608 states and 58977 transitions. [2020-10-28 17:51:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 17:51:03,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-10-28 17:51:03,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:51:04,001 INFO L225 Difference]: With dead ends: 46608 [2020-10-28 17:51:04,001 INFO L226 Difference]: Without dead ends: 29769 [2020-10-28 17:51:04,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2020-10-28 17:51:04,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29769 states. [2020-10-28 17:51:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29769 to 29394. [2020-10-28 17:51:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29394 states. [2020-10-28 17:51:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29394 states to 29394 states and 36895 transitions. [2020-10-28 17:51:06,423 INFO L78 Accepts]: Start accepts. Automaton has 29394 states and 36895 transitions. Word has length 109 [2020-10-28 17:51:06,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:51:06,424 INFO L481 AbstractCegarLoop]: Abstraction has 29394 states and 36895 transitions. [2020-10-28 17:51:06,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:51:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 29394 states and 36895 transitions. [2020-10-28 17:51:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:51:06,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:51:06,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:51:06,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:51:06,436 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:51:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:51:06,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1024247757, now seen corresponding path program 1 times [2020-10-28 17:51:06,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:51:06,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32050918] [2020-10-28 17:51:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:51:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:06,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:06,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:06,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:06,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:10,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:11,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 17:51:11,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:51:11,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 17:51:11,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:11,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:51:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:51:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 17:51:11,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:11,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:51:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:11,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:11,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:51:11,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:51:11,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:11,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:11,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:51:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:11,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:11,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:51:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:51:11,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:11,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:51:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:51:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:11,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:51:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:11,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:11,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:51:11,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:11,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:51:11,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:11,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:11,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:51:11,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:11,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:51:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:11,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:11,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:11,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:11,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:51:11,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:11,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:51:11,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:11,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:51:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:11,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:11,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:11,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:51:11,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:11,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:51:11,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:11,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:51:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:11,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:11,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:11,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:11,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:51:11,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:11,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:11,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:11,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:51:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:11,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:11,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:51:11,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:11,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:51:11,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:11,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:51:11,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:11,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:51:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:11,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:11,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:51:11,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:51:11,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:11,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:51:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:11,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:11,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:11,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 17:51:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:11,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:11,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:11,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:11,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:51:11,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:11,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:11,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:11,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:11,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:11,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:11,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:51:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:11,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:11,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:11,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:11,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:51:11,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:11,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:11,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:11,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:11,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:11,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:11,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 17:51:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:11,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:51:11,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:11,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:51:11,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:11,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:11,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:11,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:51:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:51:11,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:51:11,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32050918] [2020-10-28 17:51:11,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:51:11,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:51:11,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370306663] [2020-10-28 17:51:11,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:51:11,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:51:11,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:51:11,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:51:11,952 INFO L87 Difference]: Start difference. First operand 29394 states and 36895 transitions. Second operand 14 states. [2020-10-28 17:51:12,231 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-28 17:51:12,395 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:51:12,541 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:51:13,713 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 17:51:13,911 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 17:51:14,047 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:51:14,191 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:51:19,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:51:19,726 INFO L93 Difference]: Finished difference Result 79023 states and 102612 transitions. [2020-10-28 17:51:19,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-28 17:51:19,727 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 110 [2020-10-28 17:51:19,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:51:19,961 INFO L225 Difference]: With dead ends: 79023 [2020-10-28 17:51:19,961 INFO L226 Difference]: Without dead ends: 57676 [2020-10-28 17:51:20,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=603, Invalid=2153, Unknown=0, NotChecked=0, Total=2756 [2020-10-28 17:51:20,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57676 states. [2020-10-28 17:51:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57676 to 56893. [2020-10-28 17:51:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56893 states. [2020-10-28 17:51:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56893 states to 56893 states and 72825 transitions. [2020-10-28 17:51:24,732 INFO L78 Accepts]: Start accepts. Automaton has 56893 states and 72825 transitions. Word has length 110 [2020-10-28 17:51:24,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:51:24,733 INFO L481 AbstractCegarLoop]: Abstraction has 56893 states and 72825 transitions. [2020-10-28 17:51:24,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:51:24,733 INFO L276 IsEmpty]: Start isEmpty. Operand 56893 states and 72825 transitions. [2020-10-28 17:51:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:51:24,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:51:24,744 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:51:24,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:51:24,745 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:51:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:51:24,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1155065775, now seen corresponding path program 1 times [2020-10-28 17:51:24,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:51:24,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695497888] [2020-10-28 17:51:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:51:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:24,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:25,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:25,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:26,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:29,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:29,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 17:51:29,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:51:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:51:29,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:29,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:51:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:51:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 17:51:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:30,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:51:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:30,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:30,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:30,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:51:30,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:51:30,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:30,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:51:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:51:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:30,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:30,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:30,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:51:30,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:30,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:51:30,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:30,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:30,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:51:30,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:30,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:51:30,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:30,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:51:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:30,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:30,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:30,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:51:30,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:30,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:51:30,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:30,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:51:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:30,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:30,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:30,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:51:30,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:30,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:51:30,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:30,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:51:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:30,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:30,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:30,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:51:30,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:30,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:51:30,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:30,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:51:30,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:30,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:51:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:30,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:30,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:30,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:30,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:30,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:51:30,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:30,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:30,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:51:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:30,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:30,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:30,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:51:30,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:30,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:51:30,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:30,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:30,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:30,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:30,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:51:30,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:30,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:51:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:30,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:30,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:30,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:30,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:30,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:51:30,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:30,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:30,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:30,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:51:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:30,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:30,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:30,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:30,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:30,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:51:30,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:30,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:30,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:51:30,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:51:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:30,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:30,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:30,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:51:30,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:30,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:51:30,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:30,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:30,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:51:30,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:30,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:51:30,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 17:51:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:30,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:30,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:51:30,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:51:30,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:30,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:51:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:30,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:51:30,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695497888] [2020-10-28 17:51:30,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:51:30,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:51:30,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369722345] [2020-10-28 17:51:30,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:51:30,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:51:30,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:51:30,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:51:30,479 INFO L87 Difference]: Start difference. First operand 56893 states and 72825 transitions. Second operand 15 states. [2020-10-28 17:51:30,769 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2020-10-28 17:51:30,921 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:51:31,385 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-28 17:51:32,084 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2020-10-28 17:51:32,346 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-28 17:51:32,626 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-10-28 17:51:33,206 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-28 17:51:39,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:51:39,925 INFO L93 Difference]: Finished difference Result 140831 states and 180446 transitions. [2020-10-28 17:51:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 17:51:39,928 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2020-10-28 17:51:39,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:51:40,362 INFO L225 Difference]: With dead ends: 140831 [2020-10-28 17:51:40,362 INFO L226 Difference]: Without dead ends: 84021 [2020-10-28 17:51:40,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=459, Invalid=1263, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 17:51:40,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84021 states. [2020-10-28 17:51:46,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84021 to 81629. [2020-10-28 17:51:46,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81629 states. [2020-10-28 17:51:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81629 states to 81629 states and 103855 transitions. [2020-10-28 17:51:47,128 INFO L78 Accepts]: Start accepts. Automaton has 81629 states and 103855 transitions. Word has length 110 [2020-10-28 17:51:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:51:47,129 INFO L481 AbstractCegarLoop]: Abstraction has 81629 states and 103855 transitions. [2020-10-28 17:51:47,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:51:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 81629 states and 103855 transitions. [2020-10-28 17:51:47,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:51:47,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:51:47,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:51:47,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:51:47,143 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:51:47,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:51:47,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1991297625, now seen corresponding path program 1 times [2020-10-28 17:51:47,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:51:47,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894920161] [2020-10-28 17:51:47,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:51:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:47,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:47,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:47,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:50,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:52,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:52,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 17:51:52,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:51:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:51:52,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:52,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:51:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:51:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 17:51:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:52,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:51:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:52,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:52,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:52,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:51:52,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:52,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:51:52,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:52,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:52,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:52,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:52,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:52,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:51:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:52,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:52,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:52,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:51:52,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:52,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:51:52,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:52,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:51:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:51:52,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:52,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:51:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:52,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:52,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:52,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:52,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:51:52,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:52,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:51:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:52,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:51:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:52,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:52,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:52,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:51:52,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:52,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:51:52,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:52,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:51:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:52,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:51:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:52,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:52,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:52,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:52,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:52,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:51:52,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:52,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:51:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:51:52,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:51:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:52,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:52,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:52,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:52,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:51:52,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:52,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:52,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:52,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:51:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:52,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:52,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:52,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:51:52,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:51:52,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:52,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:51:52,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:52,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:51:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:52,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:52,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:52,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:52,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:52,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:51:52,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:52,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:52,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:52,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:51:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:52,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:52,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:52,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:51:52,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:52,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:51:52,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:52,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:51:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:52,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:52,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:51:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:52,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:52,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:52,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:52,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:52,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:51:52,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:52,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:52,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:52,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 17:51:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:52,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:52,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:52,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:51:52,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:52,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:51:52,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:52,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:51:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:51:52,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:51:52,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894920161] [2020-10-28 17:51:52,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:51:52,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 17:51:52,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345004285] [2020-10-28 17:51:52,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:51:52,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:51:52,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:51:52,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:51:52,839 INFO L87 Difference]: Start difference. First operand 81629 states and 103855 transitions. Second operand 13 states. [2020-10-28 17:51:53,024 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 17:51:53,178 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:51:53,309 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:51:54,171 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:51:54,992 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-28 17:51:55,213 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 17:52:02,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:52:02,801 INFO L93 Difference]: Finished difference Result 124375 states and 158470 transitions. [2020-10-28 17:52:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 17:52:02,802 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 110 [2020-10-28 17:52:02,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:52:03,220 INFO L225 Difference]: With dead ends: 124375 [2020-10-28 17:52:03,220 INFO L226 Difference]: Without dead ends: 89162 [2020-10-28 17:52:03,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=393, Invalid=1247, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 17:52:03,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89162 states. [2020-10-28 17:52:10,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89162 to 86124. [2020-10-28 17:52:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86124 states. [2020-10-28 17:52:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86124 states to 86124 states and 109415 transitions. [2020-10-28 17:52:10,404 INFO L78 Accepts]: Start accepts. Automaton has 86124 states and 109415 transitions. Word has length 110 [2020-10-28 17:52:10,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:52:10,405 INFO L481 AbstractCegarLoop]: Abstraction has 86124 states and 109415 transitions. [2020-10-28 17:52:10,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:52:10,405 INFO L276 IsEmpty]: Start isEmpty. Operand 86124 states and 109415 transitions. [2020-10-28 17:52:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 17:52:10,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:52:10,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:52:10,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:52:10,419 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:52:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:52:10,420 INFO L82 PathProgramCache]: Analyzing trace with hash 660912429, now seen corresponding path program 1 times [2020-10-28 17:52:10,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:52:10,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100822902] [2020-10-28 17:52:10,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:52:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:10,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:10,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:11,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:15,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:15,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 17:52:15,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:52:15,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 17:52:15,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:15,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:52:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:52:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 17:52:15,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:15,658 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:52:15,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:52:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:15,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:15,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:15,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:52:15,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:15,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:52:15,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:15,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:52:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:52:15,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:15,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:52:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:15,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:15,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:15,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:52:15,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:15,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:52:15,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:15,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:15,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:52:15,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:15,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:52:15,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:52:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:15,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:15,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:52:15,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:15,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:52:15,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:15,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:52:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:52:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:52:15,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:15,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:52:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:15,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:15,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:52:15,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:15,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:52:15,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:15,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:52:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:52:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:52:15,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:15,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:52:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:15,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:52:15,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:52:15,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:15,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:52:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:15,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:52:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:15,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:15,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:52:15,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:52:15,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:15,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:52:15,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:15,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:52:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:15,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:15,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:15,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:52:15,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:15,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:52:15,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:15,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:15,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:15,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:15,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:52:15,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:15,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:52:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:15,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:15,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:52:15,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:15,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:52:15,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:15,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:15,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:52:15,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:52:15,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:52:15,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:15,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:52:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:15,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:15,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:15,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:52:15,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:52:15,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:15,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:52:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:52:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:52:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:15,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 17:52:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:15,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:15,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:15,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:52:15,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:52:15,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:15,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:52:15,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:15,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:52:15,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:16,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:52:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:16,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:16,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:16,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:52:16,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:16,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:52:16,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:16,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:52:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:52:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 17:52:16,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100822902] [2020-10-28 17:52:16,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:52:16,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:52:16,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908777060] [2020-10-28 17:52:16,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:52:16,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:52:16,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:52:16,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:52:16,066 INFO L87 Difference]: Start difference. First operand 86124 states and 109415 transitions. Second operand 14 states. [2020-10-28 17:52:16,367 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-28 17:52:16,533 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 17:52:16,674 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 17:52:17,410 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:52:17,893 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 17:52:18,534 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 17:52:18,690 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-28 17:52:26,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:52:26,229 INFO L93 Difference]: Finished difference Result 133119 states and 169767 transitions. [2020-10-28 17:52:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 17:52:26,230 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 111 [2020-10-28 17:52:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:52:26,748 INFO L225 Difference]: With dead ends: 133119 [2020-10-28 17:52:26,748 INFO L226 Difference]: Without dead ends: 82300 [2020-10-28 17:52:26,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=416, Invalid=1476, Unknown=0, NotChecked=0, Total=1892 [2020-10-28 17:52:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82300 states. [2020-10-28 17:52:33,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82300 to 79803. [2020-10-28 17:52:33,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79803 states. [2020-10-28 17:52:33,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79803 states to 79803 states and 101206 transitions. [2020-10-28 17:52:33,437 INFO L78 Accepts]: Start accepts. Automaton has 79803 states and 101206 transitions. Word has length 111 [2020-10-28 17:52:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:52:33,438 INFO L481 AbstractCegarLoop]: Abstraction has 79803 states and 101206 transitions. [2020-10-28 17:52:33,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:52:33,438 INFO L276 IsEmpty]: Start isEmpty. Operand 79803 states and 101206 transitions. [2020-10-28 17:52:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 17:52:33,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:52:33,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:52:33,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:52:33,453 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:52:33,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:52:33,453 INFO L82 PathProgramCache]: Analyzing trace with hash -147012412, now seen corresponding path program 1 times [2020-10-28 17:52:33,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:52:33,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901172624] [2020-10-28 17:52:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:52:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:33,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:33,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:36,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:36,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:38,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:38,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 17:52:38,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:52:38,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:52:38,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:38,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:52:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:52:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 17:52:38,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:38,660 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:52:38,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:52:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:38,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:38,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:52:38,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:52:38,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:38,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:52:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:52:38,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:38,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:52:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:38,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:38,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:38,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:52:38,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:38,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:52:38,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:38,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:52:38,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:38,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:52:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:38,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:38,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:38,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:52:38,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:38,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:52:38,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:38,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:52:38,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:38,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:52:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:38,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:38,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:52:38,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:38,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:52:38,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:38,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:52:38,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:52:38,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:52:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:38,922 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2020-10-28 17:52:38,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:52:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:38,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:38,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:38,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:52:38,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:38,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:52:38,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:38,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:52:38,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:38,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:52:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:38,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:38,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:38,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:52:38,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:52:38,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:38,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:52:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:38,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:52:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:39,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:39,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:39,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:52:39,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:39,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:52:39,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:39,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:52:39,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:39,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:52:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:39,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:39,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:39,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:52:39,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:39,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:52:39,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:39,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:39,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:39,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:52:39,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:39,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 17:52:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:39,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:39,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:52:39,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:39,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:52:39,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:39,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:52:39,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:39,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:52:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:39,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:39,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:39,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:52:39,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:39,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:52:39,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:39,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:39,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:52:39,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:52:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:52:39,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:39,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 17:52:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:39,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:39,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:39,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:52:39,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:52:39,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:39,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:52:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:52:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:52:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:52:39,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901172624] [2020-10-28 17:52:39,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:52:39,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:52:39,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116517999] [2020-10-28 17:52:39,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:52:39,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:52:39,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:52:39,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:52:39,113 INFO L87 Difference]: Start difference. First operand 79803 states and 101206 transitions. Second operand 15 states. [2020-10-28 17:52:39,315 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-28 17:52:39,631 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 17:52:40,214 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 138 [2020-10-28 17:52:40,588 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-28 17:52:41,075 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-28 17:52:42,106 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 140 [2020-10-28 17:52:42,643 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:52:44,590 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 17:52:57,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:52:57,566 INFO L93 Difference]: Finished difference Result 284375 states and 360561 transitions. [2020-10-28 17:52:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 17:52:57,567 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 114 [2020-10-28 17:52:57,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:52:58,563 INFO L225 Difference]: With dead ends: 284375 [2020-10-28 17:52:58,563 INFO L226 Difference]: Without dead ends: 208643 [2020-10-28 17:52:58,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=479, Invalid=1971, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 17:52:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208643 states. [2020-10-28 17:53:14,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208643 to 199125. [2020-10-28 17:53:14,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199125 states. [2020-10-28 17:53:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199125 states to 199125 states and 252968 transitions. [2020-10-28 17:53:15,267 INFO L78 Accepts]: Start accepts. Automaton has 199125 states and 252968 transitions. Word has length 114 [2020-10-28 17:53:15,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:53:15,268 INFO L481 AbstractCegarLoop]: Abstraction has 199125 states and 252968 transitions. [2020-10-28 17:53:15,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:53:15,268 INFO L276 IsEmpty]: Start isEmpty. Operand 199125 states and 252968 transitions. [2020-10-28 17:53:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 17:53:15,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:53:15,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:53:15,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:53:15,300 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:53:15,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:53:15,301 INFO L82 PathProgramCache]: Analyzing trace with hash -639638586, now seen corresponding path program 1 times [2020-10-28 17:53:15,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:53:15,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988061540] [2020-10-28 17:53:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:53:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:15,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:15,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:15,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:15,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:16,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:17,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking...