/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:40:09,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:40:09,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:40:09,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:40:09,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:40:09,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:40:09,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:40:09,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:40:09,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:40:09,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:40:09,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:40:09,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:40:09,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:40:09,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:40:09,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:40:09,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:40:09,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:40:09,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:40:09,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:40:09,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:40:09,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:40:09,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:40:09,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:40:09,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:40:09,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:40:09,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:40:09,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:40:09,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:40:09,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:40:09,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:40:09,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:40:09,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:40:09,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:40:09,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:40:09,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:40:09,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:40:09,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:40:09,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:40:09,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:40:09,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:40:09,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:40:09,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:40:09,250 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:40:09,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:40:09,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:40:09,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:40:09,255 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:40:09,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:40:09,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:40:09,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:40:09,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:40:09,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:40:09,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:40:09,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:40:09,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:40:09,261 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:40:09,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:40:09,261 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:40:09,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:40:09,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:40:09,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:40:09,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:40:09,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:40:09,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:40:09,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:40:09,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:40:09,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:40:09,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:40:09,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:40:09,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:40:09,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:40:09,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:40:09,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:40:09,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:40:09,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:40:09,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:40:09,574 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:40:09,575 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:40:09,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ed22d9fc/3650fe9ebbe6475faf1d87e74ff7cea0/FLAG23dad8aab [2020-10-12 19:40:10,380 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:40:10,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:40:10,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ed22d9fc/3650fe9ebbe6475faf1d87e74ff7cea0/FLAG23dad8aab [2020-10-12 19:40:10,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ed22d9fc/3650fe9ebbe6475faf1d87e74ff7cea0 [2020-10-12 19:40:10,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:40:10,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:40:10,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:40:10,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:40:10,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:40:10,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:40:10" (1/1) ... [2020-10-12 19:40:10,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@369b8346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:10, skipping insertion in model container [2020-10-12 19:40:10,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:40:10" (1/1) ... [2020-10-12 19:40:10,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:40:10,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:40:11,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:40:11,827 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:40:12,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:40:12,332 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:40:12,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:12 WrapperNode [2020-10-12 19:40:12,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:40:12,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:40:12,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:40:12,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:40:12,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:12" (1/1) ... [2020-10-12 19:40:12,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:12" (1/1) ... [2020-10-12 19:40:12,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:12" (1/1) ... [2020-10-12 19:40:12,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:12" (1/1) ... [2020-10-12 19:40:12,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:12" (1/1) ... [2020-10-12 19:40:12,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:12" (1/1) ... [2020-10-12 19:40:12,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:12" (1/1) ... [2020-10-12 19:40:12,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:40:12,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:40:12,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:40:12,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:40:12,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:40:12,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:40:12,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:40:12,653 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:40:12,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:40:12,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:40:12,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:40:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:40:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:40:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:40:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:40:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:40:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:40:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:40:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:40:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:40:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:40:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:40:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:40:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:40:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:40:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:40:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:40:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:40:15,743 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:40:15,743 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:40:15,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:40:15 BoogieIcfgContainer [2020-10-12 19:40:15,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:40:15,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:40:15,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:40:15,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:40:15,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:40:10" (1/3) ... [2020-10-12 19:40:15,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218cf3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:40:15, skipping insertion in model container [2020-10-12 19:40:15,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:12" (2/3) ... [2020-10-12 19:40:15,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218cf3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:40:15, skipping insertion in model container [2020-10-12 19:40:15,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:40:15" (3/3) ... [2020-10-12 19:40:15,763 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:40:15,773 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:40:15,782 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-10-12 19:40:15,796 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-10-12 19:40:15,824 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:40:15,824 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:40:15,825 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:40:15,825 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:40:15,825 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:40:15,825 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:40:15,825 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:40:15,826 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:40:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states. [2020-10-12 19:40:15,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 19:40:15,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:15,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:40:15,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:15,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:15,903 INFO L82 PathProgramCache]: Analyzing trace with hash 10263618, now seen corresponding path program 1 times [2020-10-12 19:40:15,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:15,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054097009] [2020-10-12 19:40:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:16,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:16,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:17,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:17,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:17,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:18,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:21,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 19:40:21,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:40:21,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 19:40:21,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:40:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:40:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:40:21,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:40:22,413 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-12 19:40:22,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:22,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:22,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:22,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:22,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:22,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 19:40:22,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:40:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:22,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:40:22,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:40:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:22,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054097009] [2020-10-12 19:40:22,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:22,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:40:22,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576473889] [2020-10-12 19:40:22,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:40:22,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:22,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:40:22,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:40:22,560 INFO L87 Difference]: Start difference. First operand 1116 states. Second operand 12 states. [2020-10-12 19:40:23,255 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:40:38,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:38,528 INFO L93 Difference]: Finished difference Result 3846 states and 6378 transitions. [2020-10-12 19:40:38,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 19:40:38,530 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2020-10-12 19:40:38,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:38,573 INFO L225 Difference]: With dead ends: 3846 [2020-10-12 19:40:38,574 INFO L226 Difference]: Without dead ends: 3593 [2020-10-12 19:40:38,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:40:38,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2020-10-12 19:40:38,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 2151. [2020-10-12 19:40:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2151 states. [2020-10-12 19:40:38,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 2905 transitions. [2020-10-12 19:40:38,798 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 2905 transitions. Word has length 76 [2020-10-12 19:40:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:40:38,799 INFO L479 AbstractCegarLoop]: Abstraction has 2151 states and 2905 transitions. [2020-10-12 19:40:38,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:40:38,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 2905 transitions. [2020-10-12 19:40:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 19:40:38,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:38,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:40:38,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:40:38,807 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:38,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2017639217, now seen corresponding path program 1 times [2020-10-12 19:40:38,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:38,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635393684] [2020-10-12 19:40:38,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:38,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:38,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:38,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:39,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:39,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:39,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:43,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:43,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 19:40:43,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:40:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 19:40:43,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:40:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:40:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 19:40:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 19:40:44,362 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-12 19:40:44,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:44,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:44,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:44,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:44,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:44,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:40:44,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:40:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:40:44,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:44,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635393684] [2020-10-12 19:40:44,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:44,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:40:44,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863374083] [2020-10-12 19:40:44,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:40:44,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:44,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:40:44,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:40:44,415 INFO L87 Difference]: Start difference. First operand 2151 states and 2905 transitions. Second operand 7 states. [2020-10-12 19:40:44,906 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-12 19:40:51,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:51,207 INFO L93 Difference]: Finished difference Result 4771 states and 6680 transitions. [2020-10-12 19:40:51,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:40:51,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-10-12 19:40:51,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:51,229 INFO L225 Difference]: With dead ends: 4771 [2020-10-12 19:40:51,229 INFO L226 Difference]: Without dead ends: 4083 [2020-10-12 19:40:51,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:40:51,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2020-10-12 19:40:51,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 2715. [2020-10-12 19:40:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2715 states. [2020-10-12 19:40:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 3780 transitions. [2020-10-12 19:40:51,393 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 3780 transitions. Word has length 76 [2020-10-12 19:40:51,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:40:51,396 INFO L479 AbstractCegarLoop]: Abstraction has 2715 states and 3780 transitions. [2020-10-12 19:40:51,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:40:51,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 3780 transitions. [2020-10-12 19:40:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 19:40:51,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:51,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:40:51,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:40:51,402 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:51,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:51,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1008231127, now seen corresponding path program 1 times [2020-10-12 19:40:51,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:51,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364815000] [2020-10-12 19:40:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:51,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:51,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:51,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:54,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:54,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:54,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:55,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:56,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:56,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 19:40:56,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:40:56,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:40:56,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:40:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:40:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:40:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:57,054 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-12 19:40:57,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:57,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:57,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:57,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:57,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:40:57,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:40:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:40:57,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:57,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364815000] [2020-10-12 19:40:57,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:57,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:40:57,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379383580] [2020-10-12 19:40:57,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:40:57,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:57,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:40:57,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:40:57,113 INFO L87 Difference]: Start difference. First operand 2715 states and 3780 transitions. Second operand 9 states. [2020-10-12 19:40:57,612 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-12 19:41:05,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:05,167 INFO L93 Difference]: Finished difference Result 5792 states and 8320 transitions. [2020-10-12 19:41:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 19:41:05,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-12 19:41:05,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:05,194 INFO L225 Difference]: With dead ends: 5792 [2020-10-12 19:41:05,194 INFO L226 Difference]: Without dead ends: 5120 [2020-10-12 19:41:05,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:41:05,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2020-10-12 19:41:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 3446. [2020-10-12 19:41:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3446 states. [2020-10-12 19:41:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 4911 transitions. [2020-10-12 19:41:05,434 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 4911 transitions. Word has length 76 [2020-10-12 19:41:05,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:05,435 INFO L479 AbstractCegarLoop]: Abstraction has 3446 states and 4911 transitions. [2020-10-12 19:41:05,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:41:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 4911 transitions. [2020-10-12 19:41:05,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 19:41:05,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:05,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:05,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:41:05,441 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:05,442 INFO L82 PathProgramCache]: Analyzing trace with hash -273216194, now seen corresponding path program 1 times [2020-10-12 19:41:05,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:05,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981461614] [2020-10-12 19:41:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:05,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:08,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:08,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:08,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:09,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:10,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:10,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:10,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 19:41:10,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:41:10,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:41:10,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:41:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:41:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 19:41:10,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:11,613 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-12 19:41:11,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:11,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:11,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:11,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:11,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:41:11,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:11,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981461614] [2020-10-12 19:41:11,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:11,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:41:11,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218143453] [2020-10-12 19:41:11,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:41:11,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:11,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:41:11,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:41:11,696 INFO L87 Difference]: Start difference. First operand 3446 states and 4911 transitions. Second operand 13 states. [2020-10-12 19:41:13,044 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2020-10-12 19:41:23,454 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-10-12 19:41:28,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:28,260 INFO L93 Difference]: Finished difference Result 21586 states and 32597 transitions. [2020-10-12 19:41:28,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 19:41:28,261 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-10-12 19:41:28,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:28,336 INFO L225 Difference]: With dead ends: 21586 [2020-10-12 19:41:28,336 INFO L226 Difference]: Without dead ends: 20472 [2020-10-12 19:41:28,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=428, Invalid=1642, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 19:41:28,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20472 states. [2020-10-12 19:41:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20472 to 3440. [2020-10-12 19:41:28,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3440 states. [2020-10-12 19:41:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 4902 transitions. [2020-10-12 19:41:28,873 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 4902 transitions. Word has length 76 [2020-10-12 19:41:28,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:28,873 INFO L479 AbstractCegarLoop]: Abstraction has 3440 states and 4902 transitions. [2020-10-12 19:41:28,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:41:28,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 4902 transitions. [2020-10-12 19:41:28,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 19:41:28,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:28,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:28,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:41:28,879 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:28,879 INFO L82 PathProgramCache]: Analyzing trace with hash -832987743, now seen corresponding path program 1 times [2020-10-12 19:41:28,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:28,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556573906] [2020-10-12 19:41:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:28,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:29,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:29,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:31,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:31,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:31,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:31,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:31,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:33,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:33,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:33,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:33,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:33,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 19:41:33,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:41:33,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:41:33,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:41:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:41:33,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:41:33,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:34,614 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-12 19:41:34,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:34,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:34,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:34,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:34,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 19:41:34,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:41:34,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:34,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:41:34,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:34,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556573906] [2020-10-12 19:41:34,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:34,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:41:34,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015948427] [2020-10-12 19:41:34,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:41:34,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:34,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:41:34,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:41:34,696 INFO L87 Difference]: Start difference. First operand 3440 states and 4902 transitions. Second operand 14 states. [2020-10-12 19:41:35,811 WARN L193 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 318 [2020-10-12 19:41:45,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:45,835 INFO L93 Difference]: Finished difference Result 13022 states and 19314 transitions. [2020-10-12 19:41:45,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 19:41:45,836 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 76 [2020-10-12 19:41:45,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:45,860 INFO L225 Difference]: With dead ends: 13022 [2020-10-12 19:41:45,860 INFO L226 Difference]: Without dead ends: 10659 [2020-10-12 19:41:45,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=329, Invalid=931, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 19:41:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10659 states. [2020-10-12 19:41:46,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10659 to 3454. [2020-10-12 19:41:46,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3454 states. [2020-10-12 19:41:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 5001 transitions. [2020-10-12 19:41:46,414 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 5001 transitions. Word has length 76 [2020-10-12 19:41:46,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:46,414 INFO L479 AbstractCegarLoop]: Abstraction has 3454 states and 5001 transitions. [2020-10-12 19:41:46,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:41:46,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 5001 transitions. [2020-10-12 19:41:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 19:41:46,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:46,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:46,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:41:46,420 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:46,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:46,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1980788167, now seen corresponding path program 1 times [2020-10-12 19:41:46,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:46,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027000235] [2020-10-12 19:41:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:46,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:46,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:46,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:50,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:50,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:50,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:51,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:51,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:51,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:51,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 19:41:51,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:41:51,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-12 19:41:51,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:41:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:41:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 19:41:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:41:52,309 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-12 19:41:52,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:52,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:52,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:52,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:41:52,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:52,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:52,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:52,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:52,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:52,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027000235] [2020-10-12 19:41:52,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:52,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:41:52,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391116035] [2020-10-12 19:41:52,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:41:52,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:52,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:41:52,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:41:52,353 INFO L87 Difference]: Start difference. First operand 3454 states and 5001 transitions. Second operand 13 states. [2020-10-12 19:41:52,876 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-12 19:41:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:58,778 INFO L93 Difference]: Finished difference Result 8273 states and 12246 transitions. [2020-10-12 19:41:58,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:41:58,779 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-10-12 19:41:58,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:58,792 INFO L225 Difference]: With dead ends: 8273 [2020-10-12 19:41:58,792 INFO L226 Difference]: Without dead ends: 6795 [2020-10-12 19:41:58,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2020-10-12 19:41:58,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6795 states. [2020-10-12 19:41:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6795 to 3414. [2020-10-12 19:41:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3414 states. [2020-10-12 19:41:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 4936 transitions. [2020-10-12 19:41:59,384 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 4936 transitions. Word has length 77 [2020-10-12 19:41:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:59,384 INFO L479 AbstractCegarLoop]: Abstraction has 3414 states and 4936 transitions. [2020-10-12 19:41:59,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:41:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 4936 transitions. [2020-10-12 19:41:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 19:41:59,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:59,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:59,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:41:59,395 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:59,396 INFO L82 PathProgramCache]: Analyzing trace with hash 971222089, now seen corresponding path program 1 times [2020-10-12 19:41:59,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:59,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60654856] [2020-10-12 19:41:59,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:59,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:59,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:59,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:02,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:02,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:03,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:03,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:03,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:04,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:04,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:04,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 19:42:04,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:42:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:42:04,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:42:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:42:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:42:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:04,812 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-10-12 19:42:05,586 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-12 19:42:05,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:05,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:05,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:05,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:05,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:42:05,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:05,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:05,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60654856] [2020-10-12 19:42:05,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:05,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:42:05,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809440346] [2020-10-12 19:42:05,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:42:05,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:05,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:42:05,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:42:05,669 INFO L87 Difference]: Start difference. First operand 3414 states and 4936 transitions. Second operand 16 states. [2020-10-12 19:42:05,956 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-10-12 19:42:07,704 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 375 DAG size of output: 361 [2020-10-12 19:42:08,370 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-10-12 19:42:08,553 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-10-12 19:42:18,072 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-12 19:42:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:19,608 INFO L93 Difference]: Finished difference Result 9912 states and 14628 transitions. [2020-10-12 19:42:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 19:42:19,608 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 77 [2020-10-12 19:42:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:19,622 INFO L225 Difference]: With dead ends: 9912 [2020-10-12 19:42:19,622 INFO L226 Difference]: Without dead ends: 8439 [2020-10-12 19:42:19,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=314, Invalid=1246, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 19:42:19,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8439 states. [2020-10-12 19:42:20,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8439 to 3443. [2020-10-12 19:42:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3443 states. [2020-10-12 19:42:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 4979 transitions. [2020-10-12 19:42:20,236 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 4979 transitions. Word has length 77 [2020-10-12 19:42:20,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:20,237 INFO L479 AbstractCegarLoop]: Abstraction has 3443 states and 4979 transitions. [2020-10-12 19:42:20,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:42:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 4979 transitions. [2020-10-12 19:42:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 19:42:20,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:20,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:20,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:42:20,242 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:20,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:20,242 INFO L82 PathProgramCache]: Analyzing trace with hash -655035167, now seen corresponding path program 1 times [2020-10-12 19:42:20,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:20,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543415331] [2020-10-12 19:42:20,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:20,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:20,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:21,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:22,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:23,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:23,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:23,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:24,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:25,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:25,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 19:42:25,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:42:25,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:42:25,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:25,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:42:25,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:42:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 19:42:25,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:26,407 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-12 19:42:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:26,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:26,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:26,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:42:26,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:26,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543415331] [2020-10-12 19:42:26,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:26,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:42:26,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142832741] [2020-10-12 19:42:26,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:42:26,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:26,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:42:26,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:42:26,467 INFO L87 Difference]: Start difference. First operand 3443 states and 4979 transitions. Second operand 15 states. [2020-10-12 19:42:26,770 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-12 19:42:28,260 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 388 DAG size of output: 384 [2020-10-12 19:42:28,769 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-10-12 19:42:29,098 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-12 19:42:29,385 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-10-12 19:42:29,703 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-12 19:42:30,047 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-12 19:42:31,870 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-12 19:42:33,349 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-12 19:42:33,980 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-12 19:42:40,422 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-12 19:42:40,573 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-12 19:42:40,908 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-12 19:42:41,595 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-12 19:42:41,830 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-12 19:42:41,988 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-12 19:42:44,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:44,200 INFO L93 Difference]: Finished difference Result 11216 states and 16581 transitions. [2020-10-12 19:42:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-12 19:42:44,202 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 77 [2020-10-12 19:42:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:44,215 INFO L225 Difference]: With dead ends: 11216 [2020-10-12 19:42:44,215 INFO L226 Difference]: Without dead ends: 9969 [2020-10-12 19:42:44,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=586, Invalid=2606, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 19:42:44,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9969 states. [2020-10-12 19:42:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9969 to 3443. [2020-10-12 19:42:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3443 states. [2020-10-12 19:42:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 4976 transitions. [2020-10-12 19:42:44,832 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 4976 transitions. Word has length 77 [2020-10-12 19:42:44,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:44,832 INFO L479 AbstractCegarLoop]: Abstraction has 3443 states and 4976 transitions. [2020-10-12 19:42:44,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:42:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 4976 transitions. [2020-10-12 19:42:44,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 19:42:44,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:44,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:44,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:42:44,836 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:44,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:44,837 INFO L82 PathProgramCache]: Analyzing trace with hash 2036153314, now seen corresponding path program 1 times [2020-10-12 19:42:44,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:44,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202661323] [2020-10-12 19:42:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:44,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:44,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:44,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:45,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:45,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:46,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:46,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:46,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:46,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:47,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:48,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:49,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 19:42:49,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:42:49,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:42:49,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:42:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:42:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 19:42:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:50,227 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-12 19:42:50,353 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-12 19:42:50,481 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2020-10-12 19:42:50,616 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2020-10-12 19:42:51,234 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-12 19:42:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:51,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:51,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:51,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:51,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:42:51,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:51,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202661323] [2020-10-12 19:42:51,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:51,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:42:51,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694468318] [2020-10-12 19:42:51,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:42:51,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:51,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:42:51,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:42:51,309 INFO L87 Difference]: Start difference. First operand 3443 states and 4976 transitions. Second operand 13 states. [2020-10-12 19:42:51,468 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-12 19:42:52,699 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 346 DAG size of output: 342 [2020-10-12 19:42:52,951 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-12 19:42:53,169 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-12 19:42:53,368 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-12 19:42:53,563 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-12 19:42:53,850 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-12 19:42:55,636 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-12 19:42:56,093 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-12 19:43:02,705 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-10-12 19:43:03,780 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-12 19:43:08,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:08,604 INFO L93 Difference]: Finished difference Result 15259 states and 22656 transitions. [2020-10-12 19:43:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 19:43:08,605 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-10-12 19:43:08,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:08,622 INFO L225 Difference]: With dead ends: 15259 [2020-10-12 19:43:08,622 INFO L226 Difference]: Without dead ends: 14505 [2020-10-12 19:43:08,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=379, Invalid=1427, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 19:43:08,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14505 states. [2020-10-12 19:43:09,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14505 to 3441. [2020-10-12 19:43:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3441 states. [2020-10-12 19:43:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 4973 transitions. [2020-10-12 19:43:09,368 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 4973 transitions. Word has length 77 [2020-10-12 19:43:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:09,368 INFO L479 AbstractCegarLoop]: Abstraction has 3441 states and 4973 transitions. [2020-10-12 19:43:09,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:43:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 4973 transitions. [2020-10-12 19:43:09,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 19:43:09,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:09,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:43:09,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:43:09,372 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:09,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2092468344, now seen corresponding path program 1 times [2020-10-12 19:43:09,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:09,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724093184] [2020-10-12 19:43:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:09,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:09,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:09,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:09,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:10,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:10,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:11,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:12,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:14,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:14,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 19:43:14,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:43:14,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:43:14,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:43:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:43:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:43:14,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:14,774 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-10-12 19:43:15,512 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-12 19:43:15,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:15,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:15,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:15,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:15,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:43:15,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:43:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:43:15,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:43:15,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724093184] [2020-10-12 19:43:15,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:15,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:43:15,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656750999] [2020-10-12 19:43:15,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:43:15,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:15,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:43:15,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:43:15,563 INFO L87 Difference]: Start difference. First operand 3441 states and 4973 transitions. Second operand 12 states. [2020-10-12 19:43:16,132 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2020-10-12 19:43:26,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:26,878 INFO L93 Difference]: Finished difference Result 10907 states and 16194 transitions. [2020-10-12 19:43:26,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:43:26,879 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 77 [2020-10-12 19:43:26,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:26,887 INFO L225 Difference]: With dead ends: 10907 [2020-10-12 19:43:26,887 INFO L226 Difference]: Without dead ends: 9594 [2020-10-12 19:43:26,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-10-12 19:43:26,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9594 states. [2020-10-12 19:43:27,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9594 to 4554. [2020-10-12 19:43:27,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4554 states. [2020-10-12 19:43:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 6652 transitions. [2020-10-12 19:43:27,773 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 6652 transitions. Word has length 77 [2020-10-12 19:43:27,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:27,773 INFO L479 AbstractCegarLoop]: Abstraction has 4554 states and 6652 transitions. [2020-10-12 19:43:27,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:43:27,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 6652 transitions. [2020-10-12 19:43:27,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 19:43:27,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:27,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:43:27,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:43:27,776 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:27,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:27,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1937129094, now seen corresponding path program 1 times [2020-10-12 19:43:27,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:27,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074994187] [2020-10-12 19:43:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:27,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:28,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:29,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:32,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:32,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 19:43:32,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:43:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:43:32,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:43:32,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:43:32,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 19:43:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:33,414 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-12 19:43:33,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:33,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:33,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:33,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:33,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:43:33,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:33,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:43:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:43:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:43:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:43:33,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074994187] [2020-10-12 19:43:33,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:33,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:43:33,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340850006] [2020-10-12 19:43:33,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:43:33,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:33,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:43:33,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:43:33,479 INFO L87 Difference]: Start difference. First operand 4554 states and 6652 transitions. Second operand 11 states. [2020-10-12 19:43:34,059 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-12 19:43:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:42,886 INFO L93 Difference]: Finished difference Result 13672 states and 20531 transitions. [2020-10-12 19:43:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 19:43:42,887 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-10-12 19:43:42,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:42,898 INFO L225 Difference]: With dead ends: 13672 [2020-10-12 19:43:42,898 INFO L226 Difference]: Without dead ends: 11000 [2020-10-12 19:43:42,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:43:42,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11000 states. [2020-10-12 19:43:43,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11000 to 4554. [2020-10-12 19:43:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4554 states. [2020-10-12 19:43:43,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 6650 transitions. [2020-10-12 19:43:43,818 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 6650 transitions. Word has length 77 [2020-10-12 19:43:43,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:43,819 INFO L479 AbstractCegarLoop]: Abstraction has 4554 states and 6650 transitions. [2020-10-12 19:43:43,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:43:43,819 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 6650 transitions. [2020-10-12 19:43:43,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 19:43:43,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:43,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:43:43,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:43:43,822 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:43,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:43,822 INFO L82 PathProgramCache]: Analyzing trace with hash 975509451, now seen corresponding path program 1 times [2020-10-12 19:43:43,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:43,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832669279] [2020-10-12 19:43:43,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:43,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:43,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:44,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:44,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:44,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:44,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:48,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 19:43:48,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:43:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:43:48,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:43:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:43:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 19:43:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:49,167 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-12 19:43:49,286 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-12 19:43:49,403 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-12 19:43:50,038 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-12 19:43:50,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:50,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:50,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:50,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:50,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:43:50,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:43:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:43:50,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:43:50,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832669279] [2020-10-12 19:43:50,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:50,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:43:50,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791785289] [2020-10-12 19:43:50,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:43:50,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:50,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:43:50,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:43:50,153 INFO L87 Difference]: Start difference. First operand 4554 states and 6650 transitions. Second operand 13 states. [2020-10-12 19:43:50,461 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56