/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:31:20,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:31:20,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:31:20,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:31:20,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:31:20,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:31:20,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:31:20,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:31:20,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:31:20,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:31:20,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:31:20,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:31:20,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:31:20,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:31:20,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:31:20,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:31:20,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:31:20,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:31:20,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:31:20,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:31:20,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:31:20,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:31:20,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:31:20,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:31:20,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:31:20,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:31:20,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:31:20,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:31:20,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:31:20,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:31:20,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:31:20,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:31:20,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:31:20,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:31:20,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:31:20,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:31:20,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:31:20,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:31:20,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:31:20,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:31:20,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:31:20,118 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 [2020-10-15 03:31:20,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:31:20,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:31:20,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:31:20,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:31:20,162 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:31:20,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:31:20,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:31:20,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:31:20,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:31:20,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:31:20,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:31:20,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:31:20,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:31:20,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:31:20,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:31:20,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:31:20,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:31:20,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:31:20,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:31:20,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:31:20,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:31:20,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:31:20,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:31:20,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:31:20,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:31:20,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:31:20,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:31:20,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:31:20,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:31:20,168 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:31:20,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:31:20,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:31:20,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:31:20,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:31:20,498 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:31:20,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:31:20,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32f6229d8/5ff6b7805f7b4b9c82c2e1578a083a75/FLAG8fb5dab0c [2020-10-15 03:31:21,021 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:31:21,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:31:21,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32f6229d8/5ff6b7805f7b4b9c82c2e1578a083a75/FLAG8fb5dab0c [2020-10-15 03:31:21,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32f6229d8/5ff6b7805f7b4b9c82c2e1578a083a75 [2020-10-15 03:31:21,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:31:21,404 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:31:21,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:31:21,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:31:21,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:31:21,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:21" (1/1) ... [2020-10-15 03:31:21,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6670e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:21, skipping insertion in model container [2020-10-15 03:31:21,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:21" (1/1) ... [2020-10-15 03:31:21,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:31:21,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:31:21,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:31:21,977 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:31:22,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:31:22,111 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:31:22,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:22 WrapperNode [2020-10-15 03:31:22,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:31:22,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:31:22,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:31:22,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:31:22,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:22" (1/1) ... [2020-10-15 03:31:22,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:22" (1/1) ... [2020-10-15 03:31:22,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:22" (1/1) ... [2020-10-15 03:31:22,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:22" (1/1) ... [2020-10-15 03:31:22,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:22" (1/1) ... [2020-10-15 03:31:22,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:22" (1/1) ... [2020-10-15 03:31:22,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:22" (1/1) ... [2020-10-15 03:31:22,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:31:22,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:31:22,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:31:22,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:31:22,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:31:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:31:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:31:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:31:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:31:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:31:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:31:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:31:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:31:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:31:22,295 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:31:22,295 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:31:22,295 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:31:22,295 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:31:22,295 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:31:22,295 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:31:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:31:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:31:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:31:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:31:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:31:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:31:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:31:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:31:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:31:23,177 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:31:23,177 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:31:23,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:23 BoogieIcfgContainer [2020-10-15 03:31:23,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:31:23,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:31:23,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:31:23,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:31:23,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:31:21" (1/3) ... [2020-10-15 03:31:23,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@908bd43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:23, skipping insertion in model container [2020-10-15 03:31:23,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:22" (2/3) ... [2020-10-15 03:31:23,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@908bd43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:23, skipping insertion in model container [2020-10-15 03:31:23,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:23" (3/3) ... [2020-10-15 03:31:23,192 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:31:23,205 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:31:23,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:31:23,243 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:31:23,271 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:31:23,271 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:31:23,271 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:31:23,271 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:31:23,272 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:31:23,272 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:31:23,272 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:31:23,272 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:31:23,298 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-10-15 03:31:23,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 03:31:23,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:23,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:23,312 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:23,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:23,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1558980696, now seen corresponding path program 1 times [2020-10-15 03:31:23,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:23,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057396185] [2020-10-15 03:31:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:23,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:23,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:24,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:24,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:28,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:28,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:28,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 03:31:28,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:31:28,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 03:31:28,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:28,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:31:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:31:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:31:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:31:29,092 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:31:29,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:29,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:29,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:29,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:29,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 03:31:29,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:29,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:31:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:29,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057396185] [2020-10-15 03:31:29,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:29,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:31:29,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331857127] [2020-10-15 03:31:29,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:31:29,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:29,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:31:29,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:31:29,233 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 6 states. [2020-10-15 03:31:29,535 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:31:30,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:30,902 INFO L93 Difference]: Finished difference Result 382 states and 632 transitions. [2020-10-15 03:31:30,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:31:30,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-10-15 03:31:30,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:30,933 INFO L225 Difference]: With dead ends: 382 [2020-10-15 03:31:30,934 INFO L226 Difference]: Without dead ends: 254 [2020-10-15 03:31:30,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:31:30,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-15 03:31:31,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 252. [2020-10-15 03:31:31,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-15 03:31:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 361 transitions. [2020-10-15 03:31:31,056 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 361 transitions. Word has length 94 [2020-10-15 03:31:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:31,058 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 361 transitions. [2020-10-15 03:31:31,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:31:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 361 transitions. [2020-10-15 03:31:31,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 03:31:31,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:31,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:31,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:31:31,071 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:31,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1475711692, now seen corresponding path program 1 times [2020-10-15 03:31:31,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:31,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668646444] [2020-10-15 03:31:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:31,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:31,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:31,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:32,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:36,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:36,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 03:31:36,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:31:36,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:31:36,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:36,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:31:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:31:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:31:36,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:36,373 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:31:36,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:36,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:36,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:36,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:31:36,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:36,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:36,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:36,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:31:36,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:36,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668646444] [2020-10-15 03:31:36,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:36,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:31:36,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122631851] [2020-10-15 03:31:36,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:31:36,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:36,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:31:36,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:31:36,464 INFO L87 Difference]: Start difference. First operand 252 states and 361 transitions. Second operand 6 states. [2020-10-15 03:31:36,734 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:31:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:37,501 INFO L93 Difference]: Finished difference Result 446 states and 661 transitions. [2020-10-15 03:31:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:31:37,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-15 03:31:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:37,504 INFO L225 Difference]: With dead ends: 446 [2020-10-15 03:31:37,504 INFO L226 Difference]: Without dead ends: 252 [2020-10-15 03:31:37,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:31:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-15 03:31:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-10-15 03:31:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-15 03:31:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 358 transitions. [2020-10-15 03:31:37,528 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 358 transitions. Word has length 95 [2020-10-15 03:31:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:37,528 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 358 transitions. [2020-10-15 03:31:37,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:31:37,529 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 358 transitions. [2020-10-15 03:31:37,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 03:31:37,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:37,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:37,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:31:37,531 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:37,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:37,531 INFO L82 PathProgramCache]: Analyzing trace with hash -134170376, now seen corresponding path program 1 times [2020-10-15 03:31:37,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:37,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875090841] [2020-10-15 03:31:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:37,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:37,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:37,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:39,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:39,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:42,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:42,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 03:31:42,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:31:42,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 03:31:42,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:42,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:31:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:31:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:31:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:42,831 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:31:42,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:42,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:42,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:42,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:42,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:42,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:31:42,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:42,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:31:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:42,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875090841] [2020-10-15 03:31:42,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:42,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:31:42,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118823461] [2020-10-15 03:31:42,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:31:42,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:42,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:31:42,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:31:42,900 INFO L87 Difference]: Start difference. First operand 252 states and 358 transitions. Second operand 6 states. [2020-10-15 03:31:43,108 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:31:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:43,936 INFO L93 Difference]: Finished difference Result 596 states and 893 transitions. [2020-10-15 03:31:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:31:43,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-15 03:31:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:43,941 INFO L225 Difference]: With dead ends: 596 [2020-10-15 03:31:43,941 INFO L226 Difference]: Without dead ends: 406 [2020-10-15 03:31:43,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:31:43,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-15 03:31:43,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 404. [2020-10-15 03:31:43,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-10-15 03:31:43,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 596 transitions. [2020-10-15 03:31:43,986 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 596 transitions. Word has length 96 [2020-10-15 03:31:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:43,988 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 596 transitions. [2020-10-15 03:31:43,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:31:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 596 transitions. [2020-10-15 03:31:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 03:31:43,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:43,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:43,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:31:43,999 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:43,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:43,999 INFO L82 PathProgramCache]: Analyzing trace with hash -633331909, now seen corresponding path program 1 times [2020-10-15 03:31:43,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:44,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307353898] [2020-10-15 03:31:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:44,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:44,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:44,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:45,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:45,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:47,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:47,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:49,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:49,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 03:31:49,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:31:49,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:31:49,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:49,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:31:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:31:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 03:31:49,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:49,474 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:31:49,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:49,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:49,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:49,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:49,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:31:49,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:49,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:31:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:31:49,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-15 03:31:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:49,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307353898] [2020-10-15 03:31:49,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:49,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:31:49,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803617385] [2020-10-15 03:31:49,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:31:49,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:49,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:31:49,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:31:49,548 INFO L87 Difference]: Start difference. First operand 404 states and 596 transitions. Second operand 9 states. [2020-10-15 03:31:49,764 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 03:31:51,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:51,413 INFO L93 Difference]: Finished difference Result 1016 states and 1556 transitions. [2020-10-15 03:31:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:31:51,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-15 03:31:51,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:51,417 INFO L225 Difference]: With dead ends: 1016 [2020-10-15 03:31:51,418 INFO L226 Difference]: Without dead ends: 725 [2020-10-15 03:31:51,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:31:51,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-15 03:31:51,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 404. [2020-10-15 03:31:51,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-10-15 03:31:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 595 transitions. [2020-10-15 03:31:51,469 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 595 transitions. Word has length 97 [2020-10-15 03:31:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:51,470 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 595 transitions. [2020-10-15 03:31:51,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:31:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 595 transitions. [2020-10-15 03:31:51,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 03:31:51,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:51,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:51,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:31:51,472 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:51,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:51,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1595509767, now seen corresponding path program 1 times [2020-10-15 03:31:51,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:51,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855632802] [2020-10-15 03:31:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:51,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:51,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:51,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:52,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:52,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:54,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:55,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:55,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:55,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:55,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:55,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:55,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:56,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:56,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 03:31:56,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:31:56,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:31:56,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:56,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:56,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:31:56,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:31:56,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 03:31:56,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:56,788 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:31:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:56,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:56,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:56,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:56,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:31:56,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:56,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:31:56,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:56,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:31:56,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:31:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:56,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855632802] [2020-10-15 03:31:56,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:56,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:31:56,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803064972] [2020-10-15 03:31:56,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:31:56,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:56,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:31:56,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:31:56,883 INFO L87 Difference]: Start difference. First operand 404 states and 595 transitions. Second operand 9 states. [2020-10-15 03:31:57,208 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 03:31:59,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:59,331 INFO L93 Difference]: Finished difference Result 3857 states and 6040 transitions. [2020-10-15 03:31:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:31:59,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-15 03:31:59,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:59,356 INFO L225 Difference]: With dead ends: 3857 [2020-10-15 03:31:59,356 INFO L226 Difference]: Without dead ends: 3583 [2020-10-15 03:31:59,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:31:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2020-10-15 03:31:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 725. [2020-10-15 03:31:59,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2020-10-15 03:31:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1094 transitions. [2020-10-15 03:31:59,528 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1094 transitions. Word has length 98 [2020-10-15 03:31:59,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:59,528 INFO L479 AbstractCegarLoop]: Abstraction has 725 states and 1094 transitions. [2020-10-15 03:31:59,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:31:59,529 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1094 transitions. [2020-10-15 03:31:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:31:59,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:59,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:59,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:31:59,530 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:59,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:59,530 INFO L82 PathProgramCache]: Analyzing trace with hash 417756216, now seen corresponding path program 1 times [2020-10-15 03:31:59,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:59,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551858163] [2020-10-15 03:31:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:59,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:00,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:00,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:04,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:04,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:32:04,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:32:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:32:04,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:04,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:32:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:32:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:32:04,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:04,788 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:32:04,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:04,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:04,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:04,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:04,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:32:04,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:04,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:32:04,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:04,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:32:04,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:32:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:04,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551858163] [2020-10-15 03:32:04,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:04,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:32:04,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317156239] [2020-10-15 03:32:04,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:32:04,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:04,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:32:04,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:32:04,844 INFO L87 Difference]: Start difference. First operand 725 states and 1094 transitions. Second operand 6 states. [2020-10-15 03:32:05,029 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:32:05,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:05,916 INFO L93 Difference]: Finished difference Result 1926 states and 2964 transitions. [2020-10-15 03:32:05,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:32:05,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-15 03:32:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:05,923 INFO L225 Difference]: With dead ends: 1926 [2020-10-15 03:32:05,924 INFO L226 Difference]: Without dead ends: 1271 [2020-10-15 03:32:05,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:32:05,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2020-10-15 03:32:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1269. [2020-10-15 03:32:06,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-10-15 03:32:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1933 transitions. [2020-10-15 03:32:06,118 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1933 transitions. Word has length 99 [2020-10-15 03:32:06,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:32:06,119 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1933 transitions. [2020-10-15 03:32:06,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:32:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1933 transitions. [2020-10-15 03:32:06,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 03:32:06,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:32:06,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:32:06,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:32:06,121 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:32:06,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:32:06,121 INFO L82 PathProgramCache]: Analyzing trace with hash -526819209, now seen corresponding path program 1 times [2020-10-15 03:32:06,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:32:06,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054853072] [2020-10-15 03:32:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:32:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:06,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:06,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:06,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:07,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:08,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:08,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:11,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:11,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 03:32:11,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:32:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:32:11,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:11,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:32:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:32:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:32:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:11,511 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:32:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:11,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:11,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:11,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:11,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:11,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:32:11,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:11,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:11,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:32:11,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:32:11,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:11,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054853072] [2020-10-15 03:32:11,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:11,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:32:11,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528364053] [2020-10-15 03:32:11,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:32:11,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:11,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:32:11,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:32:11,558 INFO L87 Difference]: Start difference. First operand 1269 states and 1933 transitions. Second operand 8 states. [2020-10-15 03:32:11,784 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-15 03:32:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:13,162 INFO L93 Difference]: Finished difference Result 2998 states and 4621 transitions. [2020-10-15 03:32:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:32:13,163 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-15 03:32:13,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:13,172 INFO L225 Difference]: With dead ends: 2998 [2020-10-15 03:32:13,172 INFO L226 Difference]: Without dead ends: 1815 [2020-10-15 03:32:13,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:32:13,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2020-10-15 03:32:13,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1269. [2020-10-15 03:32:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-10-15 03:32:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1932 transitions. [2020-10-15 03:32:13,350 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1932 transitions. Word has length 100 [2020-10-15 03:32:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:32:13,351 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1932 transitions. [2020-10-15 03:32:13,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:32:13,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1932 transitions. [2020-10-15 03:32:13,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 03:32:13,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:32:13,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:32:13,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:32:13,353 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:32:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:32:13,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1010165530, now seen corresponding path program 1 times [2020-10-15 03:32:13,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:32:13,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061279825] [2020-10-15 03:32:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:32:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:13,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:13,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:13,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:14,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:14,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:14,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:14,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:15,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:18,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:18,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 03:32:18,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:32:18,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:32:18,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:18,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:18,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:32:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:32:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 03:32:18,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:18,559 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:32:18,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:18,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:18,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:18,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:32:18,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:18,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:32:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:32:18,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:18,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061279825] [2020-10-15 03:32:18,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:18,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:32:18,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195875426] [2020-10-15 03:32:18,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:32:18,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:18,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:32:18,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:32:18,592 INFO L87 Difference]: Start difference. First operand 1269 states and 1932 transitions. Second operand 6 states. [2020-10-15 03:32:18,764 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:32:21,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:21,097 INFO L93 Difference]: Finished difference Result 10328 states and 16014 transitions. [2020-10-15 03:32:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:32:21,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-15 03:32:21,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:21,141 INFO L225 Difference]: With dead ends: 10328 [2020-10-15 03:32:21,142 INFO L226 Difference]: Without dead ends: 9193 [2020-10-15 03:32:21,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:32:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9193 states. [2020-10-15 03:32:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9193 to 4827. [2020-10-15 03:32:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4827 states. [2020-10-15 03:32:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 7431 transitions. [2020-10-15 03:32:21,911 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 7431 transitions. Word has length 101 [2020-10-15 03:32:21,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:32:21,911 INFO L479 AbstractCegarLoop]: Abstraction has 4827 states and 7431 transitions. [2020-10-15 03:32:21,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:32:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 7431 transitions. [2020-10-15 03:32:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 03:32:21,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:32:21,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:32:21,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:32:21,917 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:32:21,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:32:21,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1358102545, now seen corresponding path program 1 times [2020-10-15 03:32:21,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:32:21,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548424267] [2020-10-15 03:32:21,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:32:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:22,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:24,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:24,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:24,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:24,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:25,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:25,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:26,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:26,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:26,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:26,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 03:32:26,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:32:26,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:32:26,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:26,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:26,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:32:26,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-15 03:32:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 03:32:26,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:32:27,255 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:32:27,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:27,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:27,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:27,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:27,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:27,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:32:27,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:27,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:32:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:27,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:32:27,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:32:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:27,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548424267] [2020-10-15 03:32:27,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:27,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:32:27,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212350773] [2020-10-15 03:32:27,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:32:27,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:27,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:32:27,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:32:27,293 INFO L87 Difference]: Start difference. First operand 4827 states and 7431 transitions. Second operand 6 states. [2020-10-15 03:32:27,502 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-15 03:32:29,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:29,308 INFO L93 Difference]: Finished difference Result 13389 states and 20762 transitions. [2020-10-15 03:32:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:32:29,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-15 03:32:29,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:29,414 INFO L225 Difference]: With dead ends: 13389 [2020-10-15 03:32:29,415 INFO L226 Difference]: Without dead ends: 9083 [2020-10-15 03:32:29,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:32:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9083 states. [2020-10-15 03:32:30,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9083 to 9079. [2020-10-15 03:32:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9079 states. [2020-10-15 03:32:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9079 states to 9079 states and 13991 transitions. [2020-10-15 03:32:30,403 INFO L78 Accepts]: Start accepts. Automaton has 9079 states and 13991 transitions. Word has length 101 [2020-10-15 03:32:30,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:32:30,404 INFO L479 AbstractCegarLoop]: Abstraction has 9079 states and 13991 transitions. [2020-10-15 03:32:30,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:32:30,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9079 states and 13991 transitions. [2020-10-15 03:32:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:32:30,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:32:30,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:32:30,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:32:30,409 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:32:30,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:32:30,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1309577859, now seen corresponding path program 1 times [2020-10-15 03:32:30,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:32:30,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766058391] [2020-10-15 03:32:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:32:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:30,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:30,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:30,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:31,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:31,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:31,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:32,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:33,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:33,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:34,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:35,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:35,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:32:35,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:32:35,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:32:35,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:35,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:35,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:32:35,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:32:35,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 03:32:35,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:35,626 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:32:35,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:35,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:35,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:35,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:35,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:32:35,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:35,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:35,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:32:35,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:35,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:32:35,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:35,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766058391] [2020-10-15 03:32:35,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:35,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:32:35,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849127785] [2020-10-15 03:32:35,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:32:35,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:35,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:32:35,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:32:35,654 INFO L87 Difference]: Start difference. First operand 9079 states and 13991 transitions. Second operand 6 states. [2020-10-15 03:32:35,822 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:32:45,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:45,046 INFO L93 Difference]: Finished difference Result 79175 states and 122364 transitions. [2020-10-15 03:32:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:32:45,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:32:45,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:45,225 INFO L225 Difference]: With dead ends: 79175 [2020-10-15 03:32:45,226 INFO L226 Difference]: Without dead ends: 70501 [2020-10-15 03:32:45,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:32:45,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70501 states. [2020-10-15 03:32:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70501 to 35805. [2020-10-15 03:32:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35805 states. [2020-10-15 03:32:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35805 states to 35805 states and 55123 transitions. [2020-10-15 03:32:50,941 INFO L78 Accepts]: Start accepts. Automaton has 35805 states and 55123 transitions. Word has length 102 [2020-10-15 03:32:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:32:50,942 INFO L479 AbstractCegarLoop]: Abstraction has 35805 states and 55123 transitions. [2020-10-15 03:32:50,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:32:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand 35805 states and 55123 transitions. [2020-10-15 03:32:50,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:32:50,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:32:50,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:32:50,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:32:50,958 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:32:50,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:32:50,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1079449950, now seen corresponding path program 1 times [2020-10-15 03:32:50,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:32:50,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268307718] [2020-10-15 03:32:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:32:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:50,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:51,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:51,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:51,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:54,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:55,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:55,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:55,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:55,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:55,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:32:55,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:32:55,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:32:55,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:55,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:55,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:32:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:32:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 03:32:55,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:56,493 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:32:56,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:56,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:56,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:56,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:56,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:56,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:32:56,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:56,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:32:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:32:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:56,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268307718] [2020-10-15 03:32:56,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:56,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:32:56,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604137771] [2020-10-15 03:32:56,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:32:56,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:56,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:32:56,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:32:56,533 INFO L87 Difference]: Start difference. First operand 35805 states and 55123 transitions. Second operand 9 states. [2020-10-15 03:32:56,748 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 03:33:05,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:33:05,043 INFO L93 Difference]: Finished difference Result 87297 states and 134261 transitions. [2020-10-15 03:33:05,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:33:05,044 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-15 03:33:05,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:33:05,207 INFO L225 Difference]: With dead ends: 87297 [2020-10-15 03:33:05,207 INFO L226 Difference]: Without dead ends: 53343 [2020-10-15 03:33:05,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:33:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53343 states. [2020-10-15 03:33:11,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53343 to 35805. [2020-10-15 03:33:11,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35805 states. [2020-10-15 03:33:11,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35805 states to 35805 states and 54963 transitions. [2020-10-15 03:33:11,594 INFO L78 Accepts]: Start accepts. Automaton has 35805 states and 54963 transitions. Word has length 102 [2020-10-15 03:33:11,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:11,594 INFO L479 AbstractCegarLoop]: Abstraction has 35805 states and 54963 transitions. [2020-10-15 03:33:11,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:33:11,594 INFO L276 IsEmpty]: Start isEmpty. Operand 35805 states and 54963 transitions. [2020-10-15 03:33:11,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:33:11,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:11,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:33:11,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:33:11,609 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:11,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:11,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1384591081, now seen corresponding path program 1 times [2020-10-15 03:33:11,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:11,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993137369] [2020-10-15 03:33:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:11,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:11,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:11,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:11,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:11,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:12,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:12,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:12,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:13,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:15,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:16,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:16,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:33:16,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:33:16,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:33:16,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:16,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:16,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:33:16,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:33:16,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 03:33:16,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:16,952 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:33:16,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:16,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:16,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:16,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:16,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:16,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:33:16,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:16,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:33:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:33:16,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:16,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:16,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993137369] [2020-10-15 03:33:16,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:16,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:33:16,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218580194] [2020-10-15 03:33:16,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:33:16,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:16,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:33:16,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:33:16,986 INFO L87 Difference]: Start difference. First operand 35805 states and 54963 transitions. Second operand 9 states. [2020-10-15 03:33:17,281 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 03:33:26,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:33:26,670 INFO L93 Difference]: Finished difference Result 87697 states and 134661 transitions. [2020-10-15 03:33:26,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:33:26,670 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-15 03:33:26,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:33:26,766 INFO L225 Difference]: With dead ends: 87697 [2020-10-15 03:33:26,766 INFO L226 Difference]: Without dead ends: 53343 [2020-10-15 03:33:26,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:33:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53343 states. [2020-10-15 03:33:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53343 to 35805. [2020-10-15 03:33:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35805 states. [2020-10-15 03:33:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35805 states to 35805 states and 54883 transitions. [2020-10-15 03:33:33,472 INFO L78 Accepts]: Start accepts. Automaton has 35805 states and 54883 transitions. Word has length 102 [2020-10-15 03:33:33,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:33,472 INFO L479 AbstractCegarLoop]: Abstraction has 35805 states and 54883 transitions. [2020-10-15 03:33:33,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:33:33,473 INFO L276 IsEmpty]: Start isEmpty. Operand 35805 states and 54883 transitions. [2020-10-15 03:33:33,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:33:33,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:33,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:33:33,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:33:33,482 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:33,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:33,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1216669795, now seen corresponding path program 1 times [2020-10-15 03:33:33,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:33,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798636532] [2020-10-15 03:33:33,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:33,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:33,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:33,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:34,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:34,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:38,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:38,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:33:38,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:33:38,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:33:38,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:38,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:38,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:33:38,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:33:38,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 03:33:38,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:38,725 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:33:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:38,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:38,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:38,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:38,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:33:38,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:38,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:33:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:33:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:38,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798636532] [2020-10-15 03:33:38,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:38,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:33:38,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854242551] [2020-10-15 03:33:38,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:33:38,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:38,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:33:38,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:33:38,758 INFO L87 Difference]: Start difference. First operand 35805 states and 54883 transitions. Second operand 9 states. [2020-10-15 03:33:38,982 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-15 03:34:12,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:12,912 INFO L93 Difference]: Finished difference Result 242928 states and 373694 transitions. [2020-10-15 03:34:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:34:12,913 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-15 03:34:12,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:13,294 INFO L225 Difference]: With dead ends: 242928 [2020-10-15 03:34:13,295 INFO L226 Difference]: Without dead ends: 209134 [2020-10-15 03:34:13,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:34:13,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209134 states. [2020-10-15 03:34:23,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209134 to 61597. [2020-10-15 03:34:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61597 states. [2020-10-15 03:34:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61597 states to 61597 states and 94755 transitions. [2020-10-15 03:34:23,781 INFO L78 Accepts]: Start accepts. Automaton has 61597 states and 94755 transitions. Word has length 103 [2020-10-15 03:34:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:23,781 INFO L479 AbstractCegarLoop]: Abstraction has 61597 states and 94755 transitions. [2020-10-15 03:34:23,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:34:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 61597 states and 94755 transitions. [2020-10-15 03:34:23,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:34:23,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:23,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:34:23,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:34:23,789 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:23,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:23,790 INFO L82 PathProgramCache]: Analyzing trace with hash 289135876, now seen corresponding path program 1 times [2020-10-15 03:34:23,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:23,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010243229] [2020-10-15 03:34:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:23,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:23,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:23,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:24,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:28,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:28,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:28,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:28,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:34:28,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:34:28,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 03:34:28,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:28,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:28,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:34:28,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 03:34:28,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-15 03:34:28,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:29,010 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:34:29,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:29,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:29,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:29,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:29,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:34:29,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:29,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:34:29,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:29,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:34:29,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:34:29,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010243229] [2020-10-15 03:34:29,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:29,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:34:29,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022979543] [2020-10-15 03:34:29,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:34:29,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:29,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:34:29,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:34:29,044 INFO L87 Difference]: Start difference. First operand 61597 states and 94755 transitions. Second operand 6 states. [2020-10-15 03:34:29,239 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-15 03:34:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:43,192 INFO L93 Difference]: Finished difference Result 117571 states and 180742 transitions. [2020-10-15 03:34:43,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:34:43,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-15 03:34:43,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:43,276 INFO L225 Difference]: With dead ends: 117571 [2020-10-15 03:34:43,277 INFO L226 Difference]: Without dead ends: 83777 [2020-10-15 03:34:43,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:34:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83777 states. [2020-10-15 03:34:58,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83777 to 78973. [2020-10-15 03:34:58,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78973 states. [2020-10-15 03:34:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78973 states to 78973 states and 121667 transitions. [2020-10-15 03:34:58,236 INFO L78 Accepts]: Start accepts. Automaton has 78973 states and 121667 transitions. Word has length 103 [2020-10-15 03:34:58,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:58,237 INFO L479 AbstractCegarLoop]: Abstraction has 78973 states and 121667 transitions. [2020-10-15 03:34:58,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:34:58,237 INFO L276 IsEmpty]: Start isEmpty. Operand 78973 states and 121667 transitions. [2020-10-15 03:34:58,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 03:34:58,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:58,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:34:58,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:34:58,246 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:58,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:58,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1649438332, now seen corresponding path program 1 times [2020-10-15 03:34:58,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:58,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498493945] [2020-10-15 03:34:58,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:58,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:03,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:03,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 03:35:03,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:35:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:35:03,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:03,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:35:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:35:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 03:35:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:03,618 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:35:03,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:03,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:03,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:03,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:35:03,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:03,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:03,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:03,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:03,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:03,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498493945] [2020-10-15 03:35:03,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:03,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:35:03,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312631080] [2020-10-15 03:35:03,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:35:03,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:03,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:35:03,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:03,659 INFO L87 Difference]: Start difference. First operand 78973 states and 121667 transitions. Second operand 10 states. [2020-10-15 03:35:03,869 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 164