/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:32:18,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:32:18,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:32:18,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:32:18,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:32:18,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:32:18,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:32:18,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:32:18,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:32:18,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:32:18,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:32:18,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:32:18,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:32:18,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:32:18,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:32:18,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:32:18,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:32:18,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:32:18,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:32:18,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:32:18,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:32:18,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:32:18,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:32:18,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:32:18,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:32:18,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:32:18,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:32:18,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:32:18,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:32:18,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:32:18,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:32:18,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:32:18,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:32:18,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:32:18,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:32:18,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:32:18,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:32:18,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:32:18,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:32:18,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:32:18,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:32:18,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:32:18,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:32:18,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:32:18,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:32:18,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:32:18,910 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:32:18,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:32:18,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:32:18,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:32:18,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:32:18,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:32:18,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:32:18,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:32:18,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:32:18,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:32:18,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:32:18,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:32:18,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:32:18,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:32:18,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:32:18,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:32:18,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:32:18,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:32:18,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:32:18,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:32:18,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:32:18,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:32:18,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:32:18,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:32:18,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:32:18,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:32:19,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:32:19,215 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:32:19,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:32:19,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:32:19,221 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:32:19,222 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-14 08:32:19,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69220bd48/382ce253902144d6ba0114ebe4b8039f/FLAG20d92fe7c [2020-10-14 08:32:19,999 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:32:20,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-14 08:32:20,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69220bd48/382ce253902144d6ba0114ebe4b8039f/FLAG20d92fe7c [2020-10-14 08:32:20,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69220bd48/382ce253902144d6ba0114ebe4b8039f [2020-10-14 08:32:20,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:32:20,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:32:20,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:32:20,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:32:20,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:32:20,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:32:20" (1/1) ... [2020-10-14 08:32:20,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a9d3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:32:20, skipping insertion in model container [2020-10-14 08:32:20,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:32:20" (1/1) ... [2020-10-14 08:32:20,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:32:20,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:32:21,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:32:21,301 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:32:21,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:32:22,023 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:32:22,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:32:22 WrapperNode [2020-10-14 08:32:22,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:32:22,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:32:22,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:32:22,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:32:22,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:32:22" (1/1) ... [2020-10-14 08:32:22,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:32:22" (1/1) ... [2020-10-14 08:32:22,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:32:22" (1/1) ... [2020-10-14 08:32:22,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:32:22" (1/1) ... [2020-10-14 08:32:22,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:32:22" (1/1) ... [2020-10-14 08:32:22,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:32:22" (1/1) ... [2020-10-14 08:32:22,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:32:22" (1/1) ... [2020-10-14 08:32:22,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:32:22,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:32:22,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:32:22,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:32:22,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:32:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:32:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:32:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:32:22,317 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:32:22,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:32:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:32:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:32:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:32:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:32:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:32:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:32:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:32:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:32:22,320 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:32:22,320 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:32:22,320 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:32:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:32:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:32:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:32:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:32:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:32:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:32:25,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:32:25,605 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:32:25,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:32:25 BoogieIcfgContainer [2020-10-14 08:32:25,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:32:25,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:32:25,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:32:25,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:32:25,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:32:20" (1/3) ... [2020-10-14 08:32:25,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3465238a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:32:25, skipping insertion in model container [2020-10-14 08:32:25,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:32:22" (2/3) ... [2020-10-14 08:32:25,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3465238a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:32:25, skipping insertion in model container [2020-10-14 08:32:25,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:32:25" (3/3) ... [2020-10-14 08:32:25,632 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-14 08:32:25,645 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:32:25,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-14 08:32:25,674 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-14 08:32:25,711 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:32:25,711 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:32:25,711 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:32:25,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:32:25,712 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:32:25,712 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:32:25,712 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:32:25,712 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:32:25,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states. [2020-10-14 08:32:25,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 08:32:25,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:32:25,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:32:25,795 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:32:25,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:32:25,802 INFO L82 PathProgramCache]: Analyzing trace with hash 146247639, now seen corresponding path program 1 times [2020-10-14 08:32:25,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:32:25,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734995744] [2020-10-14 08:32:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:32:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:26,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:27,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:27,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:28,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:31,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:31,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 08:32:31,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:32:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 08:32:31,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:31,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:32:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 08:32:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 08:32:31,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:32:32,180 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 08:32:32,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:32:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:32,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:32,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:32,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:32:32,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:32:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 08:32:32,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:32,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:32:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:32:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:32:32,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:32:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:32:32,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734995744] [2020-10-14 08:32:32,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:32:32,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:32:32,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930911814] [2020-10-14 08:32:32,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:32:32,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:32:32,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:32:32,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:32:32,349 INFO L87 Difference]: Start difference. First operand 1078 states. Second operand 4 states. [2020-10-14 08:32:40,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:32:40,372 INFO L93 Difference]: Finished difference Result 2472 states and 4286 transitions. [2020-10-14 08:32:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:32:40,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-14 08:32:40,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:32:40,416 INFO L225 Difference]: With dead ends: 2472 [2020-10-14 08:32:40,416 INFO L226 Difference]: Without dead ends: 1770 [2020-10-14 08:32:40,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:32:40,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2020-10-14 08:32:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1712. [2020-10-14 08:32:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1712 states. [2020-10-14 08:32:40,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2951 transitions. [2020-10-14 08:32:40,597 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2951 transitions. Word has length 160 [2020-10-14 08:32:40,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:32:40,598 INFO L479 AbstractCegarLoop]: Abstraction has 1712 states and 2951 transitions. [2020-10-14 08:32:40,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:32:40,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2951 transitions. [2020-10-14 08:32:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 08:32:40,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:32:40,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:32:40,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:32:40,605 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:32:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:32:40,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1082911082, now seen corresponding path program 1 times [2020-10-14 08:32:40,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:32:40,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510812488] [2020-10-14 08:32:40,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:32:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:40,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:40,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:41,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:41,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:41,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:41,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:42,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:45,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:45,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 08:32:45,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:32:45,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:32:45,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:45,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:45,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:32:45,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 08:32:45,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 08:32:45,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 08:32:46,324 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 08:32:46,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:32:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:46,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:46,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:32:46,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:32:46,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:32:46,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:46,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:32:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:32:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:32:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:32:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:32:46,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510812488] [2020-10-14 08:32:46,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:32:46,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:32:46,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957361812] [2020-10-14 08:32:46,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:32:46,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:32:46,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:32:46,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:32:46,410 INFO L87 Difference]: Start difference. First operand 1712 states and 2951 transitions. Second operand 4 states. [2020-10-14 08:32:54,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:32:54,181 INFO L93 Difference]: Finished difference Result 4245 states and 7303 transitions. [2020-10-14 08:32:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:32:54,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-10-14 08:32:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:32:54,200 INFO L225 Difference]: With dead ends: 4245 [2020-10-14 08:32:54,200 INFO L226 Difference]: Without dead ends: 2971 [2020-10-14 08:32:54,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:32:54,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-10-14 08:32:54,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2859. [2020-10-14 08:32:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2859 states. [2020-10-14 08:32:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 4911 transitions. [2020-10-14 08:32:54,319 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 4911 transitions. Word has length 169 [2020-10-14 08:32:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:32:54,320 INFO L479 AbstractCegarLoop]: Abstraction has 2859 states and 4911 transitions. [2020-10-14 08:32:54,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:32:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 4911 transitions. [2020-10-14 08:32:54,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 08:32:54,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:32:54,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:32:54,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:32:54,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:32:54,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:32:54,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1506995879, now seen corresponding path program 1 times [2020-10-14 08:32:54,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:32:54,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359007918] [2020-10-14 08:32:54,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:32:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:54,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:54,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:54,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:54,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:54,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:55,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:55,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:55,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:55,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:57,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:57,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:59,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:59,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 08:32:59,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:32:59,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 08:32:59,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:59,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:32:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 08:32:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:32:59,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:33:00,241 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 08:33:00,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:33:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:00,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:00,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:00,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:33:00,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:33:00,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 08:33:00,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:00,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:33:00,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:33:00,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:33:00,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:33:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:33:00,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359007918] [2020-10-14 08:33:00,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:33:00,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:33:00,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256207075] [2020-10-14 08:33:00,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:33:00,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:33:00,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:33:00,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:33:00,392 INFO L87 Difference]: Start difference. First operand 2859 states and 4911 transitions. Second operand 4 states. [2020-10-14 08:33:07,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:33:07,374 INFO L93 Difference]: Finished difference Result 7019 states and 12067 transitions. [2020-10-14 08:33:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:33:07,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-14 08:33:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:33:07,401 INFO L225 Difference]: With dead ends: 7019 [2020-10-14 08:33:07,402 INFO L226 Difference]: Without dead ends: 4899 [2020-10-14 08:33:07,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:33:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2020-10-14 08:33:07,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4679. [2020-10-14 08:33:07,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4679 states. [2020-10-14 08:33:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4679 states to 4679 states and 8015 transitions. [2020-10-14 08:33:07,592 INFO L78 Accepts]: Start accepts. Automaton has 4679 states and 8015 transitions. Word has length 178 [2020-10-14 08:33:07,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:33:07,594 INFO L479 AbstractCegarLoop]: Abstraction has 4679 states and 8015 transitions. [2020-10-14 08:33:07,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:33:07,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4679 states and 8015 transitions. [2020-10-14 08:33:07,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 08:33:07,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:33:07,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:33:07,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:33:07,609 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:33:07,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:33:07,609 INFO L82 PathProgramCache]: Analyzing trace with hash 797615083, now seen corresponding path program 1 times [2020-10-14 08:33:07,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:33:07,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240058306] [2020-10-14 08:33:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:33:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:07,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:07,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:08,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:08,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:08,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:08,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:08,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:08,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:09,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:09,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:09,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:12,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:12,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 08:33:12,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:33:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 08:33:12,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:12,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:33:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 08:33:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:33:12,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:33:13,326 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 08:33:13,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:33:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:13,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:13,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:13,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:33:13,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:33:13,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:33:13,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:13,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:33:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:33:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:33:13,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:33:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:33:13,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240058306] [2020-10-14 08:33:13,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:33:13,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:33:13,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521307604] [2020-10-14 08:33:13,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:33:13,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:33:13,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:33:13,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:33:13,408 INFO L87 Difference]: Start difference. First operand 4679 states and 8015 transitions. Second operand 4 states. [2020-10-14 08:33:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:33:20,062 INFO L93 Difference]: Finished difference Result 12372 states and 21229 transitions. [2020-10-14 08:33:20,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:33:20,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-10-14 08:33:20,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:33:20,102 INFO L225 Difference]: With dead ends: 12372 [2020-10-14 08:33:20,102 INFO L226 Difference]: Without dead ends: 8320 [2020-10-14 08:33:20,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:33:20,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8320 states. [2020-10-14 08:33:20,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8320 to 7884. [2020-10-14 08:33:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7884 states. [2020-10-14 08:33:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7884 states to 7884 states and 13465 transitions. [2020-10-14 08:33:20,405 INFO L78 Accepts]: Start accepts. Automaton has 7884 states and 13465 transitions. Word has length 187 [2020-10-14 08:33:20,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:33:20,406 INFO L479 AbstractCegarLoop]: Abstraction has 7884 states and 13465 transitions. [2020-10-14 08:33:20,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:33:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 7884 states and 13465 transitions. [2020-10-14 08:33:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 08:33:20,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:33:20,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:33:20,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:33:20,426 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:33:20,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:33:20,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1215882603, now seen corresponding path program 1 times [2020-10-14 08:33:20,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:33:20,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375633228] [2020-10-14 08:33:20,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:33:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:20,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:20,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:20,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:21,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:21,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:21,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:21,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:21,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:21,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:22,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:25,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:25,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 08:33:25,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:33:25,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:33:25,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:25,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:33:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 08:33:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:33:25,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:33:26,222 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 08:33:26,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:33:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:26,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:26,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:26,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:33:26,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:33:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:33:26,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:26,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:33:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:33:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:33:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:33:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:33:26,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375633228] [2020-10-14 08:33:26,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:33:26,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:33:26,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101999832] [2020-10-14 08:33:26,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:33:26,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:33:26,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:33:26,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:33:26,316 INFO L87 Difference]: Start difference. First operand 7884 states and 13465 transitions. Second operand 4 states. [2020-10-14 08:33:26,865 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-14 08:33:35,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:33:35,452 INFO L93 Difference]: Finished difference Result 13820 states and 23601 transitions. [2020-10-14 08:33:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:33:35,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2020-10-14 08:33:35,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:33:35,487 INFO L225 Difference]: With dead ends: 13820 [2020-10-14 08:33:35,487 INFO L226 Difference]: Without dead ends: 7888 [2020-10-14 08:33:35,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:33:35,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7888 states. [2020-10-14 08:33:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7888 to 7884. [2020-10-14 08:33:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7884 states. [2020-10-14 08:33:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7884 states to 7884 states and 13417 transitions. [2020-10-14 08:33:35,776 INFO L78 Accepts]: Start accepts. Automaton has 7884 states and 13417 transitions. Word has length 196 [2020-10-14 08:33:35,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:33:35,776 INFO L479 AbstractCegarLoop]: Abstraction has 7884 states and 13417 transitions. [2020-10-14 08:33:35,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:33:35,777 INFO L276 IsEmpty]: Start isEmpty. Operand 7884 states and 13417 transitions. [2020-10-14 08:33:35,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 08:33:35,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:33:35,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:33:35,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:33:35,801 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:33:35,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:33:35,802 INFO L82 PathProgramCache]: Analyzing trace with hash 406381065, now seen corresponding path program 1 times [2020-10-14 08:33:35,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:33:35,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811660454] [2020-10-14 08:33:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:33:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:35,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:37,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:37,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:37,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:37,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:38,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:40,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:40,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 08:33:40,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:33:40,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 08:33:40,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:40,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:33:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 08:33:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:33:40,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:33:41,730 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 08:33:41,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:33:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:41,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:41,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:41,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:33:41,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:33:41,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 08:33:41,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:41,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:33:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:33:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:33:41,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:33:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:33:41,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811660454] [2020-10-14 08:33:41,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:33:41,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:33:41,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325084282] [2020-10-14 08:33:41,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:33:41,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:33:41,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:33:41,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:33:41,969 INFO L87 Difference]: Start difference. First operand 7884 states and 13417 transitions. Second operand 4 states. [2020-10-14 08:33:42,487 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-14 08:33:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:33:51,156 INFO L93 Difference]: Finished difference Result 14044 states and 23885 transitions. [2020-10-14 08:33:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:33:51,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2020-10-14 08:33:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:33:51,175 INFO L225 Difference]: With dead ends: 14044 [2020-10-14 08:33:51,175 INFO L226 Difference]: Without dead ends: 7888 [2020-10-14 08:33:51,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:33:51,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7888 states. [2020-10-14 08:33:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7888 to 7884. [2020-10-14 08:33:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7884 states. [2020-10-14 08:33:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7884 states to 7884 states and 13369 transitions. [2020-10-14 08:33:51,467 INFO L78 Accepts]: Start accepts. Automaton has 7884 states and 13369 transitions. Word has length 196 [2020-10-14 08:33:51,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:33:51,467 INFO L479 AbstractCegarLoop]: Abstraction has 7884 states and 13369 transitions. [2020-10-14 08:33:51,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:33:51,467 INFO L276 IsEmpty]: Start isEmpty. Operand 7884 states and 13369 transitions. [2020-10-14 08:33:51,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 08:33:51,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:33:51,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:33:51,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:33:51,493 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:33:51,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:33:51,493 INFO L82 PathProgramCache]: Analyzing trace with hash -2067685845, now seen corresponding path program 1 times [2020-10-14 08:33:51,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:33:51,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950873245] [2020-10-14 08:33:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:33:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:51,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:51,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:51,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:52,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:52,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:52,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:52,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:52,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:52,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:54,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:56,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:56,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 08:33:56,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:33:56,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:33:56,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:56,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:33:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:33:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 08:33:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:33:57,223 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 08:33:57,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:33:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:57,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:57,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:57,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:33:57,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:33:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:33:57,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:57,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:33:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:33:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:33:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:33:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:33:57,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950873245] [2020-10-14 08:33:57,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:33:57,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:33:57,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54515056] [2020-10-14 08:33:57,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:33:57,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:33:57,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:33:57,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:33:57,323 INFO L87 Difference]: Start difference. First operand 7884 states and 13369 transitions. Second operand 5 states. [2020-10-14 08:34:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:34:07,179 INFO L93 Difference]: Finished difference Result 23342 states and 39604 transitions. [2020-10-14 08:34:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:34:07,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-14 08:34:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:34:07,213 INFO L225 Difference]: With dead ends: 23342 [2020-10-14 08:34:07,213 INFO L226 Difference]: Without dead ends: 15509 [2020-10-14 08:34:07,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:34:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15509 states. [2020-10-14 08:34:07,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15509 to 15505. [2020-10-14 08:34:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15505 states. [2020-10-14 08:34:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15505 states to 15505 states and 26219 transitions. [2020-10-14 08:34:07,895 INFO L78 Accepts]: Start accepts. Automaton has 15505 states and 26219 transitions. Word has length 196 [2020-10-14 08:34:07,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:34:07,895 INFO L479 AbstractCegarLoop]: Abstraction has 15505 states and 26219 transitions. [2020-10-14 08:34:07,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:34:07,895 INFO L276 IsEmpty]: Start isEmpty. Operand 15505 states and 26219 transitions. [2020-10-14 08:34:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 08:34:07,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:34:07,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:34:07,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:34:07,923 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:34:07,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:34:07,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1430966250, now seen corresponding path program 1 times [2020-10-14 08:34:07,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:34:07,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607214703] [2020-10-14 08:34:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:34:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:09,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:12,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:12,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:12,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:12,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 08:34:12,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:34:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 08:34:12,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:12,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:34:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:34:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 08:34:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:34:13,533 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 08:34:13,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:34:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:13,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:13,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:13,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:34:13,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:34:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:34:13,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:13,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:34:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:34:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:34:13,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:34:13,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607214703] [2020-10-14 08:34:13,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:34:13,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:34:13,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115121150] [2020-10-14 08:34:13,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:34:13,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:34:13,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:34:13,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:34:13,598 INFO L87 Difference]: Start difference. First operand 15505 states and 26219 transitions. Second operand 4 states. [2020-10-14 08:34:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:34:27,148 INFO L93 Difference]: Finished difference Result 45856 states and 77582 transitions. [2020-10-14 08:34:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:34:27,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-10-14 08:34:27,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:34:27,194 INFO L225 Difference]: With dead ends: 45856 [2020-10-14 08:34:27,194 INFO L226 Difference]: Without dead ends: 30480 [2020-10-14 08:34:27,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:34:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30480 states. [2020-10-14 08:34:28,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30480 to 30476. [2020-10-14 08:34:28,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30476 states. [2020-10-14 08:34:28,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30476 states to 30476 states and 51381 transitions. [2020-10-14 08:34:28,513 INFO L78 Accepts]: Start accepts. Automaton has 30476 states and 51381 transitions. Word has length 198 [2020-10-14 08:34:28,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:34:28,513 INFO L479 AbstractCegarLoop]: Abstraction has 30476 states and 51381 transitions. [2020-10-14 08:34:28,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:34:28,513 INFO L276 IsEmpty]: Start isEmpty. Operand 30476 states and 51381 transitions. [2020-10-14 08:34:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 08:34:28,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:34:28,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:34:28,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:34:28,554 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:34:28,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:34:28,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1917373339, now seen corresponding path program 1 times [2020-10-14 08:34:28,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:34:28,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000627569] [2020-10-14 08:34:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:34:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:28,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:28,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:29,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:29,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:29,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:29,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:29,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:30,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:33,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:33,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 08:34:33,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:34:33,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:34:33,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:33,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:33,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:34:33,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:34:33,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:34:33,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:34,113 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 08:34:34,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:34:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:34,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:34,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:34:34,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:34:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:34:34,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:34,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:34:34,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:34:34,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:34:34,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:34:34,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000627569] [2020-10-14 08:34:34,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:34:34,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:34:34,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615845344] [2020-10-14 08:34:34,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:34:34,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:34:34,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:34:34,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:34:34,171 INFO L87 Difference]: Start difference. First operand 30476 states and 51381 transitions. Second operand 4 states. [2020-10-14 08:34:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:34:49,571 INFO L93 Difference]: Finished difference Result 91351 states and 154008 transitions. [2020-10-14 08:34:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:34:49,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-10-14 08:34:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:34:49,642 INFO L225 Difference]: With dead ends: 91351 [2020-10-14 08:34:49,642 INFO L226 Difference]: Without dead ends: 60914 [2020-10-14 08:34:49,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:34:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60914 states. [2020-10-14 08:34:52,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60914 to 30490. [2020-10-14 08:34:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30490 states. [2020-10-14 08:34:52,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30490 states to 30490 states and 51398 transitions. [2020-10-14 08:34:52,691 INFO L78 Accepts]: Start accepts. Automaton has 30490 states and 51398 transitions. Word has length 198 [2020-10-14 08:34:52,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:34:52,691 INFO L479 AbstractCegarLoop]: Abstraction has 30490 states and 51398 transitions. [2020-10-14 08:34:52,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:34:52,692 INFO L276 IsEmpty]: Start isEmpty. Operand 30490 states and 51398 transitions. [2020-10-14 08:34:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 08:34:52,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:34:52,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:34:52,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:34:52,718 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:34:52,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:34:52,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2071360848, now seen corresponding path program 1 times [2020-10-14 08:34:52,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:34:52,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153165980] [2020-10-14 08:34:52,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:34:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:52,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:52,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:53,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:53,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:53,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:54,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:54,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:54,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:54,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:54,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:54,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:55,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:57,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:57,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-14 08:34:57,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:34:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 08:34:57,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:57,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:34:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:34:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 08:34:57,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:58,536 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 08:34:58,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:34:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:58,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:58,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:58,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:34:58,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:34:58,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:34:58,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:58,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:34:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:34:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:34:58,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:34:58,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153165980] [2020-10-14 08:34:58,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:34:58,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:34:58,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318474727] [2020-10-14 08:34:58,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:34:58,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:34:58,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:34:58,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:34:58,599 INFO L87 Difference]: Start difference. First operand 30490 states and 51398 transitions. Second operand 5 states. [2020-10-14 08:35:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:35:10,194 INFO L93 Difference]: Finished difference Result 90184 states and 152124 transitions. [2020-10-14 08:35:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:35:10,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-14 08:35:10,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:35:10,263 INFO L225 Difference]: With dead ends: 90184 [2020-10-14 08:35:10,263 INFO L226 Difference]: Without dead ends: 59808 [2020-10-14 08:35:10,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:35:10,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59808 states. [2020-10-14 08:35:13,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59808 to 59804. [2020-10-14 08:35:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59804 states. [2020-10-14 08:35:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59804 states to 59804 states and 100464 transitions. [2020-10-14 08:35:13,570 INFO L78 Accepts]: Start accepts. Automaton has 59804 states and 100464 transitions. Word has length 199 [2020-10-14 08:35:13,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:35:13,571 INFO L479 AbstractCegarLoop]: Abstraction has 59804 states and 100464 transitions. [2020-10-14 08:35:13,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:35:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 59804 states and 100464 transitions. [2020-10-14 08:35:13,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 08:35:13,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:35:13,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:35:13,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:35:13,637 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:35:13,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:35:13,638 INFO L82 PathProgramCache]: Analyzing trace with hash -88617306, now seen corresponding path program 1 times [2020-10-14 08:35:13,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:35:13,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383411205] [2020-10-14 08:35:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:35:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:13,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:14,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:14,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:14,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:15,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:15,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:15,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:16,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:18,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:18,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 08:35:18,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:35:18,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:35:18,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:18,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:35:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 08:35:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 08:35:18,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:35:19,248 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 08:35:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:35:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:19,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:19,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:35:19,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:35:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:35:19,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:19,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:19,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:35:19,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:35:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:35:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:35:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:35:19,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383411205] [2020-10-14 08:35:19,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:35:19,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:35:19,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468194999] [2020-10-14 08:35:19,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:35:19,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:35:19,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:35:19,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:35:19,318 INFO L87 Difference]: Start difference. First operand 59804 states and 100464 transitions. Second operand 4 states. [2020-10-14 08:35:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:35:38,583 INFO L93 Difference]: Finished difference Result 176708 states and 296956 transitions. [2020-10-14 08:35:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:35:38,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-10-14 08:35:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:35:38,763 INFO L225 Difference]: With dead ends: 176708 [2020-10-14 08:35:38,764 INFO L226 Difference]: Without dead ends: 117440 [2020-10-14 08:35:38,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:35:38,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117440 states. [2020-10-14 08:35:45,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117440 to 117436. [2020-10-14 08:35:45,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117436 states. [2020-10-14 08:35:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117436 states to 117436 states and 196594 transitions. [2020-10-14 08:35:45,580 INFO L78 Accepts]: Start accepts. Automaton has 117436 states and 196594 transitions. Word has length 201 [2020-10-14 08:35:45,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:35:45,581 INFO L479 AbstractCegarLoop]: Abstraction has 117436 states and 196594 transitions. [2020-10-14 08:35:45,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:35:45,581 INFO L276 IsEmpty]: Start isEmpty. Operand 117436 states and 196594 transitions. [2020-10-14 08:35:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 08:35:45,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:35:45,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:35:45,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:35:45,673 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:35:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:35:45,674 INFO L82 PathProgramCache]: Analyzing trace with hash 41090881, now seen corresponding path program 1 times [2020-10-14 08:35:45,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:35:45,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139662432] [2020-10-14 08:35:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:35:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:45,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:45,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:45,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:46,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:46,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:46,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:50,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:50,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 08:35:50,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:35:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:35:50,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:50,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:35:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 08:35:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 08:35:50,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:35:51,254 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 08:35:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:35:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:51,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:51,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:35:51,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:35:51,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:35:51,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:51,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:35:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:35:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:35:51,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:35:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:35:51,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139662432] [2020-10-14 08:35:51,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:35:51,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:35:51,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388442520] [2020-10-14 08:35:51,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:35:51,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:35:51,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:35:51,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:35:51,319 INFO L87 Difference]: Start difference. First operand 117436 states and 196594 transitions. Second operand 4 states.