/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:22:43,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:22:43,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:22:43,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:22:43,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:22:43,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:22:43,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:22:43,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:22:43,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:22:43,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:22:43,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:22:43,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:22:43,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:22:43,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:22:43,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:22:43,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:22:43,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:22:43,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:22:43,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:22:43,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:22:43,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:22:43,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:22:43,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:22:43,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:22:43,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:22:43,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:22:43,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:22:43,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:22:43,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:22:43,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:22:43,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:22:43,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:22:43,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:22:43,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:22:43,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:22:43,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:22:43,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:22:43,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:22:43,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:22:43,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:22:43,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:22:43,386 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 [2020-09-25 11:22:43,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:22:43,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:22:43,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:22:43,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:22:43,416 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:22:43,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:22:43,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:22:43,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:22:43,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:22:43,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:22:43,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:22:43,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:22:43,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:22:43,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:22:43,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:22:43,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:22:43,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:22:43,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:22:43,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:22:43,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:22:43,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:22:43,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:22:43,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:22:43,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:22:43,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:22:43,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:22:43,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:22:43,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:22:43,421 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:22:43,421 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:22:43,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:22:43,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:22:43,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:22:43,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:22:43,958 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:22:43,959 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-25 11:22:44,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83a99762e/080f983047b2492b86589b0c89000566/FLAG9d3471f05 [2020-09-25 11:22:44,617 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:22:44,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-25 11:22:44,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83a99762e/080f983047b2492b86589b0c89000566/FLAG9d3471f05 [2020-09-25 11:22:44,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83a99762e/080f983047b2492b86589b0c89000566 [2020-09-25 11:22:44,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:22:44,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:22:44,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:22:44,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:22:45,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:22:45,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:22:44" (1/1) ... [2020-09-25 11:22:45,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489547ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:45, skipping insertion in model container [2020-09-25 11:22:45,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:22:44" (1/1) ... [2020-09-25 11:22:45,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:22:45,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:22:45,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:22:45,326 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:22:45,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:22:45,372 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:22:45,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:45 WrapperNode [2020-09-25 11:22:45,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:22:45,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:22:45,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:22:45,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:22:45,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:45" (1/1) ... [2020-09-25 11:22:45,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:45" (1/1) ... [2020-09-25 11:22:45,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:45" (1/1) ... [2020-09-25 11:22:45,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:45" (1/1) ... [2020-09-25 11:22:45,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:45" (1/1) ... [2020-09-25 11:22:45,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:45" (1/1) ... [2020-09-25 11:22:45,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:45" (1/1) ... [2020-09-25 11:22:45,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:22:45,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:22:45,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:22:45,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:22:45,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:45" (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 [2020-09-25 11:22:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:22:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:22:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:22:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-09-25 11:22:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-09-25 11:22:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:22:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:22:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:22:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:22:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-09-25 11:22:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:22:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-09-25 11:22:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:22:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:22:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 11:22:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:22:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:22:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:22:46,077 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:22:46,078 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-25 11:22:46,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:22:46 BoogieIcfgContainer [2020-09-25 11:22:46,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:22:46,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:22:46,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:22:46,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:22:46,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:22:44" (1/3) ... [2020-09-25 11:22:46,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a5725d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:22:46, skipping insertion in model container [2020-09-25 11:22:46,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:45" (2/3) ... [2020-09-25 11:22:46,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a5725d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:22:46, skipping insertion in model container [2020-09-25 11:22:46,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:22:46" (3/3) ... [2020-09-25 11:22:46,095 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-09-25 11:22:46,105 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:22:46,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:22:46,137 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:22:46,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:22:46,172 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:22:46,172 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:22:46,172 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:22:46,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:22:46,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:22:46,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:22:46,173 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:22:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-09-25 11:22:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 11:22:46,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:22:46,212 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] [2020-09-25 11:22:46,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:22:46,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:22:46,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1588916751, now seen corresponding path program 1 times [2020-09-25 11:22:46,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:22:46,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203359397] [2020-09-25 11:22:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:22:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:46,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:46,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:46,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:46,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:46,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:22:46,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:22:46,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-09-25 11:22:46,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:46,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:22:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:22:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:22:46,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:22:47,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:22:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:47,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:47,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:47,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:22:47,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:22:47,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:22:47,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:47,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:22:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:22:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:22:47,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:22:47,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203359397] [2020-09-25 11:22:47,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:22:47,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:22:47,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989601157] [2020-09-25 11:22:47,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:22:47,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:22:47,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:22:47,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:22:47,211 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 5 states. [2020-09-25 11:22:47,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:22:47,667 INFO L93 Difference]: Finished difference Result 266 states and 324 transitions. [2020-09-25 11:22:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:22:47,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-09-25 11:22:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:22:47,684 INFO L225 Difference]: With dead ends: 266 [2020-09-25 11:22:47,684 INFO L226 Difference]: Without dead ends: 135 [2020-09-25 11:22:47,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:22:47,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-25 11:22:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-09-25 11:22:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 11:22:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 134 transitions. [2020-09-25 11:22:47,758 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 134 transitions. Word has length 23 [2020-09-25 11:22:47,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:22:47,758 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 134 transitions. [2020-09-25 11:22:47,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:22:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 134 transitions. [2020-09-25 11:22:47,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 11:22:47,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:22:47,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:22:47,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:22:47,764 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:22:47,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:22:47,764 INFO L82 PathProgramCache]: Analyzing trace with hash 23578911, now seen corresponding path program 1 times [2020-09-25 11:22:47,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:22:47,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055014829] [2020-09-25 11:22:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:22:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:47,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:48,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:48,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:52,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:52,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 11:22:52,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:22:52,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 11:22:52,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:52,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:22:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:22:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:22:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:22:52,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:22:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:52,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:52,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:52,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:22:52,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:22:52,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:22:52,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:52,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:22:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:22:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:22:52,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 11:22:52,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 11:22:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:52,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:52,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:52,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:52,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:22:52,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:22:52,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 11:22:52,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:52,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:52,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:22:52,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:22:52,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:22:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:53,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 11:22:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:53,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:53,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:22:53,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:22:53,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:22:53,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:53,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:53,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:22:53,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:22:53,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:22:53,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:22:53,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055014829] [2020-09-25 11:22:53,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:22:53,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 11:22:53,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537442684] [2020-09-25 11:22:53,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:22:53,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:22:53,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:22:53,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:22:53,123 INFO L87 Difference]: Start difference. First operand 122 states and 134 transitions. Second operand 11 states. [2020-09-25 11:22:54,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:22:54,255 INFO L93 Difference]: Finished difference Result 341 states and 389 transitions. [2020-09-25 11:22:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:22:54,255 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-09-25 11:22:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:22:54,265 INFO L225 Difference]: With dead ends: 341 [2020-09-25 11:22:54,265 INFO L226 Difference]: Without dead ends: 263 [2020-09-25 11:22:54,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:22:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-25 11:22:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 162. [2020-09-25 11:22:54,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-25 11:22:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 182 transitions. [2020-09-25 11:22:54,318 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 182 transitions. Word has length 59 [2020-09-25 11:22:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:22:54,321 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 182 transitions. [2020-09-25 11:22:54,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:22:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 182 transitions. [2020-09-25 11:22:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 11:22:54,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:22:54,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:22:54,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:22:54,330 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:22:54,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:22:54,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1272166002, now seen corresponding path program 1 times [2020-09-25 11:22:54,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:22:54,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462438512] [2020-09-25 11:22:54,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:22:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:54,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:54,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:54,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:54,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:54,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:54,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:55,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:55,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:55,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:56,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:59,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:59,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 11:22:59,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:22:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:22:59,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:59,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:22:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:22:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 11:22:59,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:59,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:22:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:59,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:59,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:59,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:22:59,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:22:59,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:22:59,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:59,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:22:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:22:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:22:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:59,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 11:22:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:59,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:59,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:59,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:59,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:22:59,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:22:59,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:22:59,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:59,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:22:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:22:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:22:59,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 11:22:59,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 11:22:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:59,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:59,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:22:59,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:22:59,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:22:59,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:59,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:22:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:22:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:22:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:22:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:22:59,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462438512] [2020-09-25 11:22:59,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:22:59,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 11:22:59,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382385162] [2020-09-25 11:22:59,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:22:59,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:22:59,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:22:59,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:22:59,645 INFO L87 Difference]: Start difference. First operand 162 states and 182 transitions. Second operand 12 states. [2020-09-25 11:23:00,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:00,727 INFO L93 Difference]: Finished difference Result 317 states and 358 transitions. [2020-09-25 11:23:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 11:23:00,728 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-09-25 11:23:00,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:00,731 INFO L225 Difference]: With dead ends: 317 [2020-09-25 11:23:00,731 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 11:23:00,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-09-25 11:23:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 11:23:00,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 152. [2020-09-25 11:23:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 11:23:00,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2020-09-25 11:23:00,762 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 65 [2020-09-25 11:23:00,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:00,765 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2020-09-25 11:23:00,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:23:00,765 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2020-09-25 11:23:00,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 11:23:00,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:00,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:00,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:23:00,771 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:00,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1668970121, now seen corresponding path program 1 times [2020-09-25 11:23:00,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:00,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747860044] [2020-09-25 11:23:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:00,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:00,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:00,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:01,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:05,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:05,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:05,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 11:23:05,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:23:05,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:23:05,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:05,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:23:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 11:23:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 11:23:05,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:05,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:05,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:05,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:05,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:05,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:05,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:23:05,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:05,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:05,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:05,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:05,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:05,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:05,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 11:23:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:05,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:05,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:05,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:23:05,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:05,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:23:05,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:05,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:05,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:23:05,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:05,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:23:05,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:05,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 11:23:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:05,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:05,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:05,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:23:05,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:23:05,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:05,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:23:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:23:05,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 11:23:05,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747860044] [2020-09-25 11:23:05,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:05,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:23:05,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442519181] [2020-09-25 11:23:05,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:23:05,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:05,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:23:05,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:23:05,917 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 7 states. [2020-09-25 11:23:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:06,345 INFO L93 Difference]: Finished difference Result 382 states and 432 transitions. [2020-09-25 11:23:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:23:06,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-09-25 11:23:06,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:06,348 INFO L225 Difference]: With dead ends: 382 [2020-09-25 11:23:06,349 INFO L226 Difference]: Without dead ends: 261 [2020-09-25 11:23:06,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:23:06,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-09-25 11:23:06,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 178. [2020-09-25 11:23:06,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 11:23:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions. [2020-09-25 11:23:06,379 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 71 [2020-09-25 11:23:06,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:06,379 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 199 transitions. [2020-09-25 11:23:06,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:23:06,379 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions. [2020-09-25 11:23:06,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 11:23:06,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:06,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:06,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:23:06,387 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:06,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:06,388 INFO L82 PathProgramCache]: Analyzing trace with hash 112590486, now seen corresponding path program 1 times [2020-09-25 11:23:06,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:06,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110931796] [2020-09-25 11:23:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:06,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:06,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:06,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:08,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:08,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:11,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:11,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 11:23:11,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:23:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:23:11,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:11,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:23:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 11:23:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 11:23:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:11,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:11,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:11,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:11,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:11,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:11,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:23:11,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:11,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:11,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:11,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:11,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:11,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:11,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 11:23:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:11,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:11,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:11,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:23:11,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:11,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:23:11,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:11,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:11,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:23:11,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:11,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:23:11,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:11,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 11:23:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:11,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:11,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:23:11,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:11,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:23:11,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:11,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:11,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:23:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:23:11,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:11,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 11:23:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:11,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:11,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:11,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:23:11,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:23:11,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:11,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:23:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:23:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 11:23:11,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110931796] [2020-09-25 11:23:11,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:11,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:23:11,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83234595] [2020-09-25 11:23:11,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:23:11,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:11,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:23:11,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:23:11,576 INFO L87 Difference]: Start difference. First operand 178 states and 199 transitions. Second operand 9 states. [2020-09-25 11:23:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:12,109 INFO L93 Difference]: Finished difference Result 357 states and 404 transitions. [2020-09-25 11:23:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:23:12,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-09-25 11:23:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:12,114 INFO L225 Difference]: With dead ends: 357 [2020-09-25 11:23:12,114 INFO L226 Difference]: Without dead ends: 332 [2020-09-25 11:23:12,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:23:12,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-09-25 11:23:12,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 243. [2020-09-25 11:23:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-25 11:23:12,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 274 transitions. [2020-09-25 11:23:12,138 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 274 transitions. Word has length 99 [2020-09-25 11:23:12,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:12,139 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 274 transitions. [2020-09-25 11:23:12,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:23:12,139 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 274 transitions. [2020-09-25 11:23:12,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 11:23:12,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:12,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:12,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:23:12,141 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:12,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1325819002, now seen corresponding path program 1 times [2020-09-25 11:23:12,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:12,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186233180] [2020-09-25 11:23:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:12,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:12,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:12,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:13,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:17,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:17,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 11:23:17,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:23:17,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:23:17,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:17,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:23:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:23:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:23:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:17,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:17,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:17,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:17,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:17,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:17,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:23:17,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:17,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:17,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:17,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 11:23:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:17,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:17,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:17,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:23:17,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:17,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:23:17,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:17,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:17,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:23:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:23:17,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:17,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 11:23:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:17,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:17,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:23:17,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:17,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:23:17,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:17,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:23:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:23:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 11:23:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:17,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:17,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:23:17,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:17,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:23:17,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:17,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:23:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:23:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:23:17,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:17,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 11:23:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:17,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:17,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:17,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:23:17,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:17,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:23:17,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:17,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:17,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:17,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 11:23:17,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:17,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 11:23:17,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186233180] [2020-09-25 11:23:17,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:17,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:23:17,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988115459] [2020-09-25 11:23:17,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:23:17,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:17,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:23:17,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:23:17,462 INFO L87 Difference]: Start difference. First operand 243 states and 274 transitions. Second operand 12 states. [2020-09-25 11:23:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:18,606 INFO L93 Difference]: Finished difference Result 453 states and 517 transitions. [2020-09-25 11:23:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 11:23:18,607 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-09-25 11:23:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:18,611 INFO L225 Difference]: With dead ends: 453 [2020-09-25 11:23:18,611 INFO L226 Difference]: Without dead ends: 310 [2020-09-25 11:23:18,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-09-25 11:23:18,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-09-25 11:23:18,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 265. [2020-09-25 11:23:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-09-25 11:23:18,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 302 transitions. [2020-09-25 11:23:18,631 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 302 transitions. Word has length 100 [2020-09-25 11:23:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:18,632 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 302 transitions. [2020-09-25 11:23:18,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:23:18,632 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 302 transitions. [2020-09-25 11:23:18,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 11:23:18,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:18,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:18,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:23:18,634 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:18,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:18,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1494818916, now seen corresponding path program 1 times [2020-09-25 11:23:18,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:18,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488262396] [2020-09-25 11:23:18,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:18,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:23,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:23,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 11:23:23,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:23:23,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:23:23,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:23,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:23,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:23:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:23:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 11:23:23,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:23,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:23,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:23,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:23,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:23,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:23,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:23:23,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:23,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:23,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 11:23:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:23,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:23,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:23,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:23:23,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:23,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:23:23,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:23,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:23,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:23:23,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:23,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:23:23,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:23,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 11:23:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:23,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:23,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:23:23,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:23,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:23:23,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:23,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:23:23,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:23,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:23:23,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:23,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 11:23:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:23,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:23,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:23,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:23:23,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:23,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:23:23,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:23,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 11:23:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 11:23:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:23,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:23,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:23,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:23:23,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:23,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:23:23,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:23,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 11:23:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:23,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:23:23,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488262396] [2020-09-25 11:23:23,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:23,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:23:23,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945822273] [2020-09-25 11:23:23,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:23:23,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:23,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:23:23,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:23:23,874 INFO L87 Difference]: Start difference. First operand 265 states and 302 transitions. Second operand 10 states. [2020-09-25 11:23:24,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:24,623 INFO L93 Difference]: Finished difference Result 432 states and 492 transitions. [2020-09-25 11:23:24,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:23:24,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-09-25 11:23:24,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:24,626 INFO L225 Difference]: With dead ends: 432 [2020-09-25 11:23:24,626 INFO L226 Difference]: Without dead ends: 279 [2020-09-25 11:23:24,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:23:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-25 11:23:24,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 267. [2020-09-25 11:23:24,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-25 11:23:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 301 transitions. [2020-09-25 11:23:24,644 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 301 transitions. Word has length 103 [2020-09-25 11:23:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:24,644 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 301 transitions. [2020-09-25 11:23:24,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:23:24,645 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 301 transitions. [2020-09-25 11:23:24,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 11:23:24,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:24,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:24,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:23:24,647 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:24,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:24,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1281866795, now seen corresponding path program 1 times [2020-09-25 11:23:24,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:24,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853480512] [2020-09-25 11:23:24,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:24,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:24,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:25,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:25,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 11:23:25,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:23:25,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-09-25 11:23:25,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:25,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:23:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 11:23:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:23:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:25,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:25,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:25,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:25,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:25,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:23:25,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:25,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:25,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:25,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 11:23:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:25,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:25,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:23:25,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:25,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:23:25,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:25,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:25,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:25,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:23:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:25,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:25,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 11:23:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:25,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:25,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:23:25,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:23:25,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:25,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 11:23:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:25,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:25,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 11:23:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:25,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:25,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:23:25,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:25,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:23:25,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:25,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 11:23:25,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:25,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:25,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 11:23:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:25,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:25,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:23:25,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:25,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:23:25,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:25,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:25,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:25,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 11:23:25,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:25,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 11:23:25,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853480512] [2020-09-25 11:23:25,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:25,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:23:25,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345340973] [2020-09-25 11:23:25,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:23:25,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:25,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:23:25,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:23:25,954 INFO L87 Difference]: Start difference. First operand 267 states and 301 transitions. Second operand 7 states. [2020-09-25 11:23:26,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:26,383 INFO L93 Difference]: Finished difference Result 525 states and 593 transitions. [2020-09-25 11:23:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:23:26,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-09-25 11:23:26,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:26,389 INFO L225 Difference]: With dead ends: 525 [2020-09-25 11:23:26,390 INFO L226 Difference]: Without dead ends: 290 [2020-09-25 11:23:26,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:23:26,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-09-25 11:23:26,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 274. [2020-09-25 11:23:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 11:23:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 308 transitions. [2020-09-25 11:23:26,415 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 308 transitions. Word has length 109 [2020-09-25 11:23:26,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:26,416 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 308 transitions. [2020-09-25 11:23:26,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:23:26,416 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 308 transitions. [2020-09-25 11:23:26,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 11:23:26,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:26,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:26,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:23:26,424 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:26,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:26,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1761287741, now seen corresponding path program 2 times [2020-09-25 11:23:26,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:26,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049831865] [2020-09-25 11:23:26,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:26,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:26,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:28,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:28,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 11:23:28,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:23:28,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1931 [2020-09-25 11:23:28,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:28,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:23:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 11:23:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:23:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:28,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:28,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:23:28,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:28,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:28,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 11:23:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:28,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:28,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:28,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:23:28,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:28,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:23:28,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:28,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:23:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:28,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:23:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:28,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:28,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:28,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:23:28,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:23:28,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:28,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 11:23:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:28,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 11:23:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:28,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:28,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:23:28,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:28,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:23:28,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:28,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:28,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:28,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 11:23:28,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:28,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 11:23:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:28,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:28,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:28,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:23:28,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:28,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:23:28,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:28,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 11:23:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:28,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 11:23:28,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049831865] [2020-09-25 11:23:28,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:28,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:23:28,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082213149] [2020-09-25 11:23:28,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:23:28,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:28,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:23:28,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:23:28,564 INFO L87 Difference]: Start difference. First operand 274 states and 308 transitions. Second operand 9 states. [2020-09-25 11:23:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:29,020 INFO L93 Difference]: Finished difference Result 532 states and 600 transitions. [2020-09-25 11:23:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:23:29,023 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-09-25 11:23:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:29,025 INFO L225 Difference]: With dead ends: 532 [2020-09-25 11:23:29,025 INFO L226 Difference]: Without dead ends: 297 [2020-09-25 11:23:29,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:23:29,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-25 11:23:29,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 281. [2020-09-25 11:23:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-09-25 11:23:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 315 transitions. [2020-09-25 11:23:29,050 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 315 transitions. Word has length 116 [2020-09-25 11:23:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:29,050 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 315 transitions. [2020-09-25 11:23:29,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:23:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 315 transitions. [2020-09-25 11:23:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 11:23:29,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:29,053 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:29,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:23:29,053 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:29,054 INFO L82 PathProgramCache]: Analyzing trace with hash -302687211, now seen corresponding path program 3 times [2020-09-25 11:23:29,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:29,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722702513] [2020-09-25 11:23:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:29,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:31,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:31,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 11:23:31,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:23:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2721 [2020-09-25 11:23:31,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:31,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:23:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 11:23:31,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:23:31,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:31,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:31,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:31,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:31,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:31,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:23:31,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:31,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:31,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:31,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:31,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:31,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 11:23:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:31,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:31,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:31,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:23:31,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:23:31,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:31,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:23:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:31,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 11:23:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:31,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:31,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:23:31,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:31,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:23:31,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:31,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:31,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:31,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 11:23:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:31,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 11:23:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:31,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:31,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:23:31,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:31,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:23:31,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:31,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 11:23:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:31,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 11:23:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:31,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:31,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:23:31,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:23:31,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:31,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 11:23:31,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:31,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 11:23:31,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722702513] [2020-09-25 11:23:31,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:31,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:23:31,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501867385] [2020-09-25 11:23:31,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:23:31,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:31,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:23:31,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:23:31,955 INFO L87 Difference]: Start difference. First operand 281 states and 315 transitions. Second operand 11 states.