/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.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:15:43,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:15:43,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:15:43,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:15:43,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:15:43,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:15:43,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:15:43,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:15:43,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:15:43,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:15:43,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:15:43,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:15:43,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:15:43,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:15:43,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:15:43,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:15:43,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:15:43,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:15:43,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:15:43,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:15:43,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:15:43,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:15:43,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:15:43,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:15:43,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:15:43,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:15:43,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:15:43,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:15:43,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:15:43,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:15:43,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:15:43,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:15:43,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:15:43,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:15:43,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:15:43,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:15:43,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:15:43,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:15:43,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:15:43,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:15:43,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:15:43,190 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 03:15:43,232 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:15:43,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:15:43,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:15:43,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:15:43,236 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:15:43,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:15:43,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:15:43,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:15:43,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:15:43,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:15:43,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:15:43,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:15:43,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:15:43,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:15:43,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:15:43,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:15:43,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:15:43,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:15:43,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:15:43,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:15:43,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:15:43,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:15:43,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:15:43,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:15:43,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:15:43,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:15:43,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:15:43,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:15:43,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:15:43,242 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 03:15:43,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:15:43,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:15:43,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:15:43,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:15:43,642 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:15:43,642 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:15:43,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f9d3cc8e/aa6f847bb9af46eab052ce8fe3c64abb/FLAG8caa89e1c [2020-10-15 03:15:44,297 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:15:44,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:15:44,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f9d3cc8e/aa6f847bb9af46eab052ce8fe3c64abb/FLAG8caa89e1c [2020-10-15 03:15:44,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f9d3cc8e/aa6f847bb9af46eab052ce8fe3c64abb [2020-10-15 03:15:44,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:15:44,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:15:44,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:15:44,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:15:44,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:15:44,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:15:44" (1/1) ... [2020-10-15 03:15:44,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425c36b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:44, skipping insertion in model container [2020-10-15 03:15:44,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:15:44" (1/1) ... [2020-10-15 03:15:44,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:15:44,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:15:45,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:15:45,408 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:15:45,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:15:45,596 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:15:45,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:45 WrapperNode [2020-10-15 03:15:45,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:15:45,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:15:45,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:15:45,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:15:45,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:45" (1/1) ... [2020-10-15 03:15:45,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:45" (1/1) ... [2020-10-15 03:15:45,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:45" (1/1) ... [2020-10-15 03:15:45,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:45" (1/1) ... [2020-10-15 03:15:45,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:45" (1/1) ... [2020-10-15 03:15:45,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:45" (1/1) ... [2020-10-15 03:15:45,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:45" (1/1) ... [2020-10-15 03:15:45,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:15:45,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:15:45,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:15:45,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:15:45,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:15:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:15:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:15:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:15:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:15:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:15:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:15:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:15:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:15:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:15:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:15:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:15:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:15:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:15:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:15:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:15:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:15:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:15:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:15:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:15:45,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:15:45,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:15:47,313 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:15:47,313 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:15:47,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:15:47 BoogieIcfgContainer [2020-10-15 03:15:47,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:15:47,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:15:47,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:15:47,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:15:47,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:15:44" (1/3) ... [2020-10-15 03:15:47,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30936bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:15:47, skipping insertion in model container [2020-10-15 03:15:47,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:45" (2/3) ... [2020-10-15 03:15:47,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30936bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:15:47, skipping insertion in model container [2020-10-15 03:15:47,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:15:47" (3/3) ... [2020-10-15 03:15:47,336 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:15:47,352 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:15:47,361 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-15 03:15:47,376 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 03:15:47,404 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:15:47,404 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:15:47,405 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:15:47,405 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:15:47,405 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:15:47,405 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:15:47,405 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:15:47,405 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:15:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-15 03:15:47,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 03:15:47,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:47,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:15:47,447 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:47,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:47,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1846019956, now seen corresponding path program 1 times [2020-10-15 03:15:47,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:47,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7616389] [2020-10-15 03:15:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:48,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:48,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:49,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:49,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:50,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:52,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 03:15:52,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:15:52,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 03:15:52,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:52,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:15:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:15:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:15:52,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-15 03:15:53,481 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:15:53,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:53,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:53,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:53,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:53,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 03:15:53,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:53,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:53,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:15:53,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:53,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:15:53,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:15:53,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7616389] [2020-10-15 03:15:53,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:53,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:15:53,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687966533] [2020-10-15 03:15:53,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:15:53,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:53,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:15:53,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:15:53,626 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 7 states. [2020-10-15 03:15:54,005 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:15:56,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:56,153 INFO L93 Difference]: Finished difference Result 376 states and 613 transitions. [2020-10-15 03:15:56,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:15:56,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-15 03:15:56,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:56,196 INFO L225 Difference]: With dead ends: 376 [2020-10-15 03:15:56,197 INFO L226 Difference]: Without dead ends: 295 [2020-10-15 03:15:56,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:15:56,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-15 03:15:56,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 225. [2020-10-15 03:15:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-15 03:15:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 279 transitions. [2020-10-15 03:15:56,286 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 279 transitions. Word has length 50 [2020-10-15 03:15:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:56,287 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 279 transitions. [2020-10-15 03:15:56,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:15:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 279 transitions. [2020-10-15 03:15:56,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 03:15:56,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:56,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:15:56,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:15:56,291 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:56,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:56,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1288587156, now seen corresponding path program 1 times [2020-10-15 03:15:56,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:56,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450185069] [2020-10-15 03:15:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:56,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:56,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:56,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:56,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:01,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:01,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 03:16:01,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:01,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:16:01,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:01,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:16:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:16:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:16:01,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-15 03:16:01,614 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:16:01,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:01,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:01,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:01,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:01,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:16:01,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:01,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:01,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:01,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:01,647 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 03:16:01,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450185069] [2020-10-15 03:16:01,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:01,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:16:01,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914551033] [2020-10-15 03:16:01,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:16:01,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:01,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:16:01,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:16:01,653 INFO L87 Difference]: Start difference. First operand 225 states and 279 transitions. Second operand 6 states. [2020-10-15 03:16:01,826 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:16:03,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:03,875 INFO L93 Difference]: Finished difference Result 748 states and 1015 transitions. [2020-10-15 03:16:03,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:16:03,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-15 03:16:03,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:03,880 INFO L225 Difference]: With dead ends: 748 [2020-10-15 03:16:03,880 INFO L226 Difference]: Without dead ends: 690 [2020-10-15 03:16:03,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:16:03,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-10-15 03:16:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 410. [2020-10-15 03:16:03,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-10-15 03:16:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 556 transitions. [2020-10-15 03:16:03,953 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 556 transitions. Word has length 50 [2020-10-15 03:16:03,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:03,954 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 556 transitions. [2020-10-15 03:16:03,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:16:03,954 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 556 transitions. [2020-10-15 03:16:03,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 03:16:03,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:03,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:03,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:16:03,968 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:03,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:03,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1477961815, now seen corresponding path program 1 times [2020-10-15 03:16:03,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:03,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249306303] [2020-10-15 03:16:03,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:03,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:05,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:08,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:08,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:08,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:08,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 03:16:08,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-15 03:16:08,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:16:08,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:08,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:08,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:16:08,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:08,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:16:08,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:09,354 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:16:09,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:09,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:09,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:09,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:16:09,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:09,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:09,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:09,413 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 03:16:09,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249306303] [2020-10-15 03:16:09,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:09,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:16:09,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503483377] [2020-10-15 03:16:09,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:16:09,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:09,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:16:09,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:09,424 INFO L87 Difference]: Start difference. First operand 410 states and 556 transitions. Second operand 8 states. [2020-10-15 03:16:09,966 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2020-10-15 03:16:11,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:11,236 INFO L93 Difference]: Finished difference Result 756 states and 1049 transitions. [2020-10-15 03:16:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:16:11,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-15 03:16:11,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:11,244 INFO L225 Difference]: With dead ends: 756 [2020-10-15 03:16:11,244 INFO L226 Difference]: Without dead ends: 742 [2020-10-15 03:16:11,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:16:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-10-15 03:16:11,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 412. [2020-10-15 03:16:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-15 03:16:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 558 transitions. [2020-10-15 03:16:11,283 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 558 transitions. Word has length 50 [2020-10-15 03:16:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:11,288 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 558 transitions. [2020-10-15 03:16:11,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:16:11,289 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 558 transitions. [2020-10-15 03:16:11,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 03:16:11,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:11,291 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] [2020-10-15 03:16:11,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:16:11,292 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:11,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:11,292 INFO L82 PathProgramCache]: Analyzing trace with hash 414157740, now seen corresponding path program 1 times [2020-10-15 03:16:11,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:11,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655165277] [2020-10-15 03:16:11,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:11,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:14,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:15,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:15,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:15,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:16,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:16,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 03:16:16,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:16:16,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:16:16,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:16,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:16:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:16:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:16:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:16,531 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:16:16,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:16,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:16,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:16,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:16,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:16:16,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:16,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:16:16,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:16,599 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 03:16:16,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655165277] [2020-10-15 03:16:16,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:16,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:16:16,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395310251] [2020-10-15 03:16:16,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:16:16,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:16,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:16:16,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:16:16,606 INFO L87 Difference]: Start difference. First operand 412 states and 558 transitions. Second operand 7 states. [2020-10-15 03:16:16,944 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:16:18,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:18,299 INFO L93 Difference]: Finished difference Result 1347 states and 1932 transitions. [2020-10-15 03:16:18,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:18,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-15 03:16:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:18,306 INFO L225 Difference]: With dead ends: 1347 [2020-10-15 03:16:18,306 INFO L226 Difference]: Without dead ends: 1027 [2020-10-15 03:16:18,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:16:18,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-10-15 03:16:18,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 404. [2020-10-15 03:16:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-10-15 03:16:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 538 transitions. [2020-10-15 03:16:18,341 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 538 transitions. Word has length 51 [2020-10-15 03:16:18,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:18,341 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 538 transitions. [2020-10-15 03:16:18,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:16:18,341 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 538 transitions. [2020-10-15 03:16:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 03:16:18,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:18,343 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] [2020-10-15 03:16:18,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:16:18,343 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:18,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:18,344 INFO L82 PathProgramCache]: Analyzing trace with hash 782215881, now seen corresponding path program 1 times [2020-10-15 03:16:18,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:18,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375490112] [2020-10-15 03:16:18,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:18,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:18,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:18,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:23,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:23,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:23,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 03:16:23,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 03:16:23,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:16:23,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:23,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:23,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:16:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:16:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:16:23,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:23,606 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:16:23,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:23,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:23,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:23,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:23,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:23,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:16:23,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:23,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:16:23,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:23,652 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 03:16:23,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375490112] [2020-10-15 03:16:23,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:23,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:16:23,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750384988] [2020-10-15 03:16:23,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:16:23,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:23,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:16:23,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:23,655 INFO L87 Difference]: Start difference. First operand 404 states and 538 transitions. Second operand 8 states. [2020-10-15 03:16:23,804 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:16:25,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:25,304 INFO L93 Difference]: Finished difference Result 1456 states and 2087 transitions. [2020-10-15 03:16:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:25,304 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-15 03:16:25,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:25,315 INFO L225 Difference]: With dead ends: 1456 [2020-10-15 03:16:25,316 INFO L226 Difference]: Without dead ends: 1213 [2020-10-15 03:16:25,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:16:25,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2020-10-15 03:16:25,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 432. [2020-10-15 03:16:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-10-15 03:16:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 568 transitions. [2020-10-15 03:16:25,381 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 568 transitions. Word has length 51 [2020-10-15 03:16:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:25,382 INFO L479 AbstractCegarLoop]: Abstraction has 432 states and 568 transitions. [2020-10-15 03:16:25,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:16:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 568 transitions. [2020-10-15 03:16:25,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 03:16:25,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:25,383 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] [2020-10-15 03:16:25,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:16:25,384 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:25,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:25,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1090569306, now seen corresponding path program 1 times [2020-10-15 03:16:25,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:25,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113202292] [2020-10-15 03:16:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:25,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:25,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:25,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:25,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:25,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:25,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:27,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:27,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:27,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:27,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:28,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:28,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:29,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:29,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:29,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:29,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:30,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:30,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:30,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 03:16:30,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 03:16:30,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:16:30,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:30,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:30,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:16:30,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:30,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:16:30,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:30,662 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-15 03:16:30,883 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:16:30,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:30,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:30,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:30,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:30,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:30,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:16:30,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:30,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:30,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:30,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113202292] [2020-10-15 03:16:30,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:30,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:16:30,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40113588] [2020-10-15 03:16:30,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:16:30,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:30,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:16:30,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:30,926 INFO L87 Difference]: Start difference. First operand 432 states and 568 transitions. Second operand 8 states. [2020-10-15 03:16:31,103 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:16:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:33,743 INFO L93 Difference]: Finished difference Result 1164 states and 1610 transitions. [2020-10-15 03:16:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 03:16:33,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-15 03:16:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:33,750 INFO L225 Difference]: With dead ends: 1164 [2020-10-15 03:16:33,750 INFO L226 Difference]: Without dead ends: 1058 [2020-10-15 03:16:33,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:16:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-10-15 03:16:33,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 426. [2020-10-15 03:16:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-15 03:16:33,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 556 transitions. [2020-10-15 03:16:33,795 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 556 transitions. Word has length 51 [2020-10-15 03:16:33,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:33,796 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 556 transitions. [2020-10-15 03:16:33,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:16:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 556 transitions. [2020-10-15 03:16:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:16:33,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:33,797 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] [2020-10-15 03:16:33,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:16:33,798 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:33,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:33,798 INFO L82 PathProgramCache]: Analyzing trace with hash 392674371, now seen corresponding path program 1 times [2020-10-15 03:16:33,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:33,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145264806] [2020-10-15 03:16:33,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:33,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:34,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:34,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:34,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:34,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:38,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:38,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:16:38,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:16:38,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:38,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:16:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:39,121 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:16:39,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:39,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:39,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:39,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:39,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:16:39,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:39,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:39,150 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 03:16:39,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145264806] [2020-10-15 03:16:39,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:39,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:39,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262331996] [2020-10-15 03:16:39,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:39,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:39,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:39,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:39,153 INFO L87 Difference]: Start difference. First operand 426 states and 556 transitions. Second operand 9 states. [2020-10-15 03:16:39,423 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:16:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:40,899 INFO L93 Difference]: Finished difference Result 1043 states and 1446 transitions. [2020-10-15 03:16:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:40,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-15 03:16:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:40,911 INFO L225 Difference]: With dead ends: 1043 [2020-10-15 03:16:40,911 INFO L226 Difference]: Without dead ends: 1025 [2020-10-15 03:16:40,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:16:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-10-15 03:16:40,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 408. [2020-10-15 03:16:40,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-15 03:16:40,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 535 transitions. [2020-10-15 03:16:40,973 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 535 transitions. Word has length 52 [2020-10-15 03:16:40,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:40,974 INFO L479 AbstractCegarLoop]: Abstraction has 408 states and 535 transitions. [2020-10-15 03:16:40,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:40,975 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 535 transitions. [2020-10-15 03:16:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:16:40,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:40,976 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] [2020-10-15 03:16:40,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:16:40,976 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:40,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:40,977 INFO L82 PathProgramCache]: Analyzing trace with hash 255462534, now seen corresponding path program 1 times [2020-10-15 03:16:40,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:40,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497057011] [2020-10-15 03:16:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:41,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:46,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:16:46,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:46,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:16:46,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:46,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:16:46,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:46,221 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:16:46,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:46,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:46,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:46,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:16:46,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:46,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:46,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:46,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:46,246 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 03:16:46,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497057011] [2020-10-15 03:16:46,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:46,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:46,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595843887] [2020-10-15 03:16:46,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:46,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:46,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:46,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:46,251 INFO L87 Difference]: Start difference. First operand 408 states and 535 transitions. Second operand 9 states. [2020-10-15 03:16:46,439 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:16:47,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:47,817 INFO L93 Difference]: Finished difference Result 669 states and 920 transitions. [2020-10-15 03:16:47,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:47,818 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-15 03:16:47,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:47,822 INFO L225 Difference]: With dead ends: 669 [2020-10-15 03:16:47,823 INFO L226 Difference]: Without dead ends: 663 [2020-10-15 03:16:47,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:16:47,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-10-15 03:16:47,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 402. [2020-10-15 03:16:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-10-15 03:16:47,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 528 transitions. [2020-10-15 03:16:47,879 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 528 transitions. Word has length 52 [2020-10-15 03:16:47,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:47,879 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 528 transitions. [2020-10-15 03:16:47,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:47,880 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 528 transitions. [2020-10-15 03:16:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:16:47,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:47,882 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] [2020-10-15 03:16:47,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:16:47,882 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:47,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:47,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1999310382, now seen corresponding path program 1 times [2020-10-15 03:16:47,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:47,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572072813] [2020-10-15 03:16:47,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:47,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:47,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:49,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:49,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:50,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:50,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:50,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:50,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:51,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:52,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:52,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:16:52,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 03:16:52,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:16:52,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:52,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:16:52,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:53,170 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:16:53,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:53,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:53,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:53,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:53,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:16:53,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:53,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:53,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:53,197 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 03:16:53,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572072813] [2020-10-15 03:16:53,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:53,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:53,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725986548] [2020-10-15 03:16:53,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:53,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:53,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:53,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:53,200 INFO L87 Difference]: Start difference. First operand 402 states and 528 transitions. Second operand 9 states. [2020-10-15 03:16:53,400 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 03:16:54,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:54,415 INFO L93 Difference]: Finished difference Result 633 states and 862 transitions. [2020-10-15 03:16:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:54,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-15 03:16:54,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:54,418 INFO L225 Difference]: With dead ends: 633 [2020-10-15 03:16:54,418 INFO L226 Difference]: Without dead ends: 464 [2020-10-15 03:16:54,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:16:54,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-15 03:16:54,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 390. [2020-10-15 03:16:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-10-15 03:16:54,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 511 transitions. [2020-10-15 03:16:54,463 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 511 transitions. Word has length 52 [2020-10-15 03:16:54,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:54,464 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 511 transitions. [2020-10-15 03:16:54,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:54,464 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 511 transitions. [2020-10-15 03:16:54,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:16:54,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:54,466 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] [2020-10-15 03:16:54,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:16:54,466 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:54,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:54,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1738224114, now seen corresponding path program 1 times [2020-10-15 03:16:54,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:54,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059826338] [2020-10-15 03:16:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:55,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:55,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:55,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:56,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:56,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:56,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:56,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:59,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:16:59,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:16:59,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:16:59,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:59,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:16:59,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:59,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:16:59,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:59,698 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:16:59,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:59,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:59,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:59,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:59,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:16:59,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:59,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:59,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059826338] [2020-10-15 03:16:59,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:59,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:16:59,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564770615] [2020-10-15 03:16:59,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:16:59,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:59,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:16:59,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:59,732 INFO L87 Difference]: Start difference. First operand 390 states and 511 transitions. Second operand 8 states. [2020-10-15 03:17:00,175 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2020-10-15 03:17:01,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:01,508 INFO L93 Difference]: Finished difference Result 1429 states and 2019 transitions. [2020-10-15 03:17:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:17:01,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-15 03:17:01,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:01,515 INFO L225 Difference]: With dead ends: 1429 [2020-10-15 03:17:01,515 INFO L226 Difference]: Without dead ends: 1233 [2020-10-15 03:17:01,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:17:01,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-10-15 03:17:01,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 394. [2020-10-15 03:17:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-15 03:17:01,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 515 transitions. [2020-10-15 03:17:01,567 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 515 transitions. Word has length 52 [2020-10-15 03:17:01,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:01,567 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 515 transitions. [2020-10-15 03:17:01,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:17:01,567 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 515 transitions. [2020-10-15 03:17:01,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:17:01,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:01,569 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] [2020-10-15 03:17:01,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:17:01,569 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:01,569 INFO L82 PathProgramCache]: Analyzing trace with hash 2016157189, now seen corresponding path program 1 times [2020-10-15 03:17:01,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:01,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524003763] [2020-10-15 03:17:01,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:01,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:01,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:01,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:01,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:01,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:01,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:02,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:02,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:06,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:06,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:17:06,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:17:06,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:17:06,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:06,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:17:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:17:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:17:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:17:06,864 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:17:06,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:06,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:06,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:06,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:06,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:06,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:17:06,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:06,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:06,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:06,886 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 03:17:06,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524003763] [2020-10-15 03:17:06,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:06,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:17:06,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259378343] [2020-10-15 03:17:06,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:17:06,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:06,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:17:06,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:06,889 INFO L87 Difference]: Start difference. First operand 394 states and 515 transitions. Second operand 8 states. [2020-10-15 03:17:07,078 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 03:17:08,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:08,139 INFO L93 Difference]: Finished difference Result 1136 states and 1609 transitions. [2020-10-15 03:17:08,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:17:08,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-15 03:17:08,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:08,144 INFO L225 Difference]: With dead ends: 1136 [2020-10-15 03:17:08,144 INFO L226 Difference]: Without dead ends: 932 [2020-10-15 03:17:08,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:17:08,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-10-15 03:17:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 353. [2020-10-15 03:17:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-10-15 03:17:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 462 transitions. [2020-10-15 03:17:08,198 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 462 transitions. Word has length 52 [2020-10-15 03:17:08,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:08,198 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 462 transitions. [2020-10-15 03:17:08,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:17:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 462 transitions. [2020-10-15 03:17:08,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:17:08,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:08,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:08,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:17:08,201 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:08,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:08,201 INFO L82 PathProgramCache]: Analyzing trace with hash 252959182, now seen corresponding path program 1 times [2020-10-15 03:17:08,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:08,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895873760] [2020-10-15 03:17:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:08,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:08,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:08,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:08,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:08,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:08,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:08,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:08,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:08,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:13,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:13,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:17:13,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:17:13,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:17:13,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:13,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:17:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:17:13,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:13,489 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:17:13,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:13,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:13,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:13,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:13,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:13,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:17:13,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:13,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:13,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:13,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:13,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:17:13,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:17:13,534 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 03:17:13,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895873760] [2020-10-15 03:17:13,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:13,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:17:13,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585917432] [2020-10-15 03:17:13,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:13,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:13,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:13,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:13,538 INFO L87 Difference]: Start difference. First operand 353 states and 462 transitions. Second operand 6 states. [2020-10-15 03:17:13,726 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:17:14,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:14,271 INFO L93 Difference]: Finished difference Result 750 states and 1041 transitions. [2020-10-15 03:17:14,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:17:14,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-15 03:17:14,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:14,281 INFO L225 Difference]: With dead ends: 750 [2020-10-15 03:17:14,281 INFO L226 Difference]: Without dead ends: 509 [2020-10-15 03:17:14,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:14,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-10-15 03:17:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 507. [2020-10-15 03:17:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-15 03:17:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 699 transitions. [2020-10-15 03:17:14,363 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 699 transitions. Word has length 69 [2020-10-15 03:17:14,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:14,364 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 699 transitions. [2020-10-15 03:17:14,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:14,364 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 699 transitions. [2020-10-15 03:17:14,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:17:14,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:14,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:14,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:17:14,367 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:14,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:14,367 INFO L82 PathProgramCache]: Analyzing trace with hash -106762861, now seen corresponding path program 1 times [2020-10-15 03:17:14,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:14,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276085751] [2020-10-15 03:17:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:14,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:14,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:14,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:15,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:15,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:15,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:19,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:19,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:17:19,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:17:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:17:19,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:19,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:17:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:17:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:17:19,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:19,722 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:17:19,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:19,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:19,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:19,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:19,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:19,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:17:19,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:19,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:19,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:19,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:19,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:19,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:19,748 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 03:17:19,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276085751] [2020-10-15 03:17:19,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:19,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:17:19,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992429905] [2020-10-15 03:17:19,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:17:19,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:19,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:17:19,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:19,751 INFO L87 Difference]: Start difference. First operand 507 states and 699 transitions. Second operand 8 states. [2020-10-15 03:17:19,992 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-15 03:17:21,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:21,402 INFO L93 Difference]: Finished difference Result 2316 states and 3434 transitions. [2020-10-15 03:17:21,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:17:21,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-15 03:17:21,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:21,411 INFO L225 Difference]: With dead ends: 2316 [2020-10-15 03:17:21,411 INFO L226 Difference]: Without dead ends: 1992 [2020-10-15 03:17:21,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:17:21,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2020-10-15 03:17:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 828. [2020-10-15 03:17:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2020-10-15 03:17:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1186 transitions. [2020-10-15 03:17:21,551 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1186 transitions. Word has length 70 [2020-10-15 03:17:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:21,551 INFO L479 AbstractCegarLoop]: Abstraction has 828 states and 1186 transitions. [2020-10-15 03:17:21,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:17:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1186 transitions. [2020-10-15 03:17:21,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:17:21,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:21,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:21,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:17:21,557 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:21,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:21,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1673841717, now seen corresponding path program 1 times [2020-10-15 03:17:21,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:21,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808809340] [2020-10-15 03:17:21,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:22,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:22,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:22,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:24,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:26,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:26,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:17:26,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:17:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:17:26,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:26,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:17:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:17:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:17:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:26,764 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:17:26,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:26,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:26,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:26,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:26,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:17:26,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:26,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:26,787 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 03:17:26,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808809340] [2020-10-15 03:17:26,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:26,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:17:26,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511307997] [2020-10-15 03:17:26,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:17:26,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:26,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:17:26,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:17:26,789 INFO L87 Difference]: Start difference. First operand 828 states and 1186 transitions. Second operand 5 states. [2020-10-15 03:17:27,049 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:17:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:27,758 INFO L93 Difference]: Finished difference Result 1742 states and 2578 transitions. [2020-10-15 03:17:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:17:27,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-15 03:17:27,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:27,763 INFO L225 Difference]: With dead ends: 1742 [2020-10-15 03:17:27,763 INFO L226 Difference]: Without dead ends: 1132 [2020-10-15 03:17:27,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:17:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2020-10-15 03:17:27,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1116. [2020-10-15 03:17:27,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1116 states. [2020-10-15 03:17:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1592 transitions. [2020-10-15 03:17:27,955 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1592 transitions. Word has length 71 [2020-10-15 03:17:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:27,955 INFO L479 AbstractCegarLoop]: Abstraction has 1116 states and 1592 transitions. [2020-10-15 03:17:27,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:17:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1592 transitions. [2020-10-15 03:17:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:17:27,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:27,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:27,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:17:27,958 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:27,959 INFO L82 PathProgramCache]: Analyzing trace with hash -784012115, now seen corresponding path program 1 times [2020-10-15 03:17:27,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:27,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965356193] [2020-10-15 03:17:27,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:27,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:28,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:28,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:28,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:28,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:28,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:28,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:31,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:31,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:32,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:32,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:17:32,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:17:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:17:32,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:32,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:17:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:17:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:17:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:33,233 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:17:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:33,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:33,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:33,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:33,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:17:33,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:33,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:33,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:33,261 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 03:17:33,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965356193] [2020-10-15 03:17:33,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:33,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:17:33,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138940333] [2020-10-15 03:17:33,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:17:33,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:33,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:17:33,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:33,264 INFO L87 Difference]: Start difference. First operand 1116 states and 1592 transitions. Second operand 8 states. [2020-10-15 03:17:33,449 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:17:34,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:34,397 INFO L93 Difference]: Finished difference Result 2189 states and 3172 transitions. [2020-10-15 03:17:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:17:34,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-15 03:17:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:34,402 INFO L225 Difference]: With dead ends: 2189 [2020-10-15 03:17:34,402 INFO L226 Difference]: Without dead ends: 1236 [2020-10-15 03:17:34,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:17:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2020-10-15 03:17:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 938. [2020-10-15 03:17:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 938 states. [2020-10-15 03:17:34,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1327 transitions. [2020-10-15 03:17:34,591 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1327 transitions. Word has length 71 [2020-10-15 03:17:34,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:34,591 INFO L479 AbstractCegarLoop]: Abstraction has 938 states and 1327 transitions. [2020-10-15 03:17:34,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:17:34,592 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1327 transitions. [2020-10-15 03:17:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:17:34,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:34,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:34,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:17:34,594 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:34,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:34,595 INFO L82 PathProgramCache]: Analyzing trace with hash 439575800, now seen corresponding path program 1 times [2020-10-15 03:17:34,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:34,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198423021] [2020-10-15 03:17:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:34,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:34,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:34,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:36,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:36,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:36,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:39,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:39,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:17:39,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:17:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:17:39,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:39,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:17:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:17:39,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:39,806 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:17:39,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:39,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:39,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:39,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:39,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:39,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:17:39,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:39,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:39,834 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 03:17:39,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198423021] [2020-10-15 03:17:39,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:39,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:17:39,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208948496] [2020-10-15 03:17:39,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:39,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:39,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:39,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:39,837 INFO L87 Difference]: Start difference. First operand 938 states and 1327 transitions. Second operand 6 states. [2020-10-15 03:17:40,044 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:17:41,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:41,337 INFO L93 Difference]: Finished difference Result 4776 states and 7117 transitions. [2020-10-15 03:17:41,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:17:41,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-15 03:17:41,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:41,353 INFO L225 Difference]: With dead ends: 4776 [2020-10-15 03:17:41,354 INFO L226 Difference]: Without dead ends: 4045 [2020-10-15 03:17:41,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:17:41,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4045 states. [2020-10-15 03:17:41,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4045 to 1659. [2020-10-15 03:17:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-10-15 03:17:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2379 transitions. [2020-10-15 03:17:41,776 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2379 transitions. Word has length 72 [2020-10-15 03:17:41,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:41,777 INFO L479 AbstractCegarLoop]: Abstraction has 1659 states and 2379 transitions. [2020-10-15 03:17:41,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2379 transitions. [2020-10-15 03:17:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:17:41,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:41,781 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] [2020-10-15 03:17:41,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:17:41,781 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:41,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:41,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1012086448, now seen corresponding path program 1 times [2020-10-15 03:17:41,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:41,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143602157] [2020-10-15 03:17:41,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:41,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:41,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:41,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:41,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:42,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:45,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:45,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:46,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:46,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:17:46,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:17:46,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:17:46,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:46,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:17:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:17:46,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:46,982 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:17:46,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:46,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:46,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:46,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:17:46,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:46,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:47,003 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 03:17:47,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143602157] [2020-10-15 03:17:47,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:47,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:17:47,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258935805] [2020-10-15 03:17:47,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:47,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:47,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:47,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:47,005 INFO L87 Difference]: Start difference. First operand 1659 states and 2379 transitions. Second operand 6 states. [2020-10-15 03:17:47,278 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 03:17:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:48,376 INFO L93 Difference]: Finished difference Result 4493 states and 6574 transitions. [2020-10-15 03:17:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:17:48,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-10-15 03:17:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:48,388 INFO L225 Difference]: With dead ends: 4493 [2020-10-15 03:17:48,388 INFO L226 Difference]: Without dead ends: 3041 [2020-10-15 03:17:48,392 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 03:17:48,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2020-10-15 03:17:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 3037. [2020-10-15 03:17:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3037 states. [2020-10-15 03:17:49,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4387 transitions. [2020-10-15 03:17:49,115 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4387 transitions. Word has length 74 [2020-10-15 03:17:49,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:49,116 INFO L479 AbstractCegarLoop]: Abstraction has 3037 states and 4387 transitions. [2020-10-15 03:17:49,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:49,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4387 transitions. [2020-10-15 03:17:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:17:49,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:49,119 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] [2020-10-15 03:17:49,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:17:49,120 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:49,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:49,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1949767963, now seen corresponding path program 1 times [2020-10-15 03:17:49,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:49,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131673918] [2020-10-15 03:17:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:49,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:50,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:50,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:54,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:54,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:17:54,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:17:54,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:17:54,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:54,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:54,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:54,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:17:54,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:17:54,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:54,341 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:17:54,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:54,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:54,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:54,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:54,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:54,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:17:54,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:54,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:54,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:54,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:54,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:54,395 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 03:17:54,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131673918] [2020-10-15 03:17:54,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:54,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:17:54,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148157200] [2020-10-15 03:17:54,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:54,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:54,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:54,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:54,400 INFO L87 Difference]: Start difference. First operand 3037 states and 4387 transitions. Second operand 6 states. [2020-10-15 03:17:54,622 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-15 03:17:56,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:56,653 INFO L93 Difference]: Finished difference Result 10251 states and 15057 transitions. [2020-10-15 03:17:56,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:17:56,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-10-15 03:17:56,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:56,685 INFO L225 Difference]: With dead ends: 10251 [2020-10-15 03:17:56,685 INFO L226 Difference]: Without dead ends: 7421 [2020-10-15 03:17:56,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:17:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7421 states. [2020-10-15 03:17:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7421 to 3037. [2020-10-15 03:17:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3037 states. [2020-10-15 03:17:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4367 transitions. [2020-10-15 03:17:57,351 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4367 transitions. Word has length 74 [2020-10-15 03:17:57,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:57,352 INFO L479 AbstractCegarLoop]: Abstraction has 3037 states and 4367 transitions. [2020-10-15 03:17:57,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:57,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4367 transitions. [2020-10-15 03:17:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:17:57,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:57,355 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] [2020-10-15 03:17:57,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:17:57,356 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:57,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:57,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1867871626, now seen corresponding path program 1 times [2020-10-15 03:17:57,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:57,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003925259] [2020-10-15 03:17:57,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:57,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:57,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:57,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:57,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:59,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:59,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:00,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:02,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:02,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:18:02,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:18:02,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:18:02,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:02,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:18:02,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:18:02,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:02,687 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:18:02,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:02,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:02,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:02,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:02,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:02,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:18:02,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:02,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:02,713 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 03:18:02,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003925259] [2020-10-15 03:18:02,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:02,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:18:02,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008721528] [2020-10-15 03:18:02,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:02,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:02,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:02,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:02,715 INFO L87 Difference]: Start difference. First operand 3037 states and 4367 transitions. Second operand 6 states. [2020-10-15 03:18:03,064 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 03:18:04,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:04,973 INFO L93 Difference]: Finished difference Result 10068 states and 14676 transitions. [2020-10-15 03:18:04,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:18:04,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-10-15 03:18:04,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:04,988 INFO L225 Difference]: With dead ends: 10068 [2020-10-15 03:18:04,989 INFO L226 Difference]: Without dead ends: 7238 [2020-10-15 03:18:04,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:18:05,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7238 states. [2020-10-15 03:18:06,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7238 to 4950. [2020-10-15 03:18:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4950 states. [2020-10-15 03:18:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 7175 transitions. [2020-10-15 03:18:06,083 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 7175 transitions. Word has length 74 [2020-10-15 03:18:06,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:06,083 INFO L479 AbstractCegarLoop]: Abstraction has 4950 states and 7175 transitions. [2020-10-15 03:18:06,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:06,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 7175 transitions. [2020-10-15 03:18:06,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:18:06,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:06,093 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] [2020-10-15 03:18:06,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:18:06,094 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:06,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:06,096 INFO L82 PathProgramCache]: Analyzing trace with hash 254097101, now seen corresponding path program 1 times [2020-10-15 03:18:06,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:06,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801841588] [2020-10-15 03:18:06,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:06,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:07,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:11,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:11,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:18:11,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:18:11,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:18:11,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:11,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:18:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 03:18:11,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:11,311 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:18:11,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:11,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:11,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:11,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:11,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:18:11,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:11,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:18:11,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:11,342 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 03:18:11,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801841588] [2020-10-15 03:18:11,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:11,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:18:11,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392792539] [2020-10-15 03:18:11,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:11,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:11,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:11,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:11,344 INFO L87 Difference]: Start difference. First operand 4950 states and 7175 transitions. Second operand 6 states. [2020-10-15 03:18:11,534 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:18:12,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:12,792 INFO L93 Difference]: Finished difference Result 7308 states and 10647 transitions. [2020-10-15 03:18:12,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:18:12,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:18:12,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:12,803 INFO L225 Difference]: With dead ends: 7308 [2020-10-15 03:18:12,803 INFO L226 Difference]: Without dead ends: 3659 [2020-10-15 03:18:12,812 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 03:18:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2020-10-15 03:18:13,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 2480. [2020-10-15 03:18:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2480 states. [2020-10-15 03:18:13,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3579 transitions. [2020-10-15 03:18:13,625 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3579 transitions. Word has length 75 [2020-10-15 03:18:13,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:13,625 INFO L479 AbstractCegarLoop]: Abstraction has 2480 states and 3579 transitions. [2020-10-15 03:18:13,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:13,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3579 transitions. [2020-10-15 03:18:13,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:18:13,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:13,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:18:13,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:18:13,628 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:13,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:13,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1075825575, now seen corresponding path program 1 times [2020-10-15 03:18:13,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:13,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175750497] [2020-10-15 03:18:13,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:13,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:13,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:13,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:13,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:13,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:14,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:14,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:17,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:18,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:18,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:18:18,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:18:18,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:18:18,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:18,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:18:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:18:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:18:18,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:18,914 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:18:18,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:18,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:18,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:18,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:18,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:18:18,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:18,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:18,937 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 03:18:18,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175750497] [2020-10-15 03:18:18,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:18,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:18:18,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483153497] [2020-10-15 03:18:18,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:18:18,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:18,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:18:18,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:18:18,939 INFO L87 Difference]: Start difference. First operand 2480 states and 3579 transitions. Second operand 8 states. [2020-10-15 03:18:19,131 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:18:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:20,768 INFO L93 Difference]: Finished difference Result 6047 states and 8756 transitions. [2020-10-15 03:18:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:18:20,768 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-15 03:18:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:20,778 INFO L225 Difference]: With dead ends: 6047 [2020-10-15 03:18:20,778 INFO L226 Difference]: Without dead ends: 3659 [2020-10-15 03:18:20,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:18:20,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2020-10-15 03:18:21,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 2480. [2020-10-15 03:18:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2480 states. [2020-10-15 03:18:21,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3575 transitions. [2020-10-15 03:18:21,414 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3575 transitions. Word has length 76 [2020-10-15 03:18:21,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:21,415 INFO L479 AbstractCegarLoop]: Abstraction has 2480 states and 3575 transitions. [2020-10-15 03:18:21,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:18:21,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3575 transitions. [2020-10-15 03:18:21,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 03:18:21,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:21,416 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] [2020-10-15 03:18:21,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 03:18:21,417 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:21,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:21,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1864960666, now seen corresponding path program 1 times [2020-10-15 03:18:21,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:21,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15334334] [2020-10-15 03:18:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:21,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:21,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:21,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:22,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:22,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 03:18:22,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:18:22,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-15 03:18:22,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:22,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:22,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:22,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:18:22,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 03:18:22,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:22,798 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:18:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:22,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:22,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:22,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:22,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:18:22,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:22,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:18:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:22,831 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 03:18:22,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15334334] [2020-10-15 03:18:22,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:22,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:18:22,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693103628] [2020-10-15 03:18:22,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:22,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:22,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:22,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:22,833 INFO L87 Difference]: Start difference. First operand 2480 states and 3575 transitions. Second operand 6 states. [2020-10-15 03:18:23,017 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:18:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:24,677 INFO L93 Difference]: Finished difference Result 7127 states and 10393 transitions. [2020-10-15 03:18:24,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:18:24,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-15 03:18:24,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:24,688 INFO L225 Difference]: With dead ends: 7127 [2020-10-15 03:18:24,689 INFO L226 Difference]: Without dead ends: 4731 [2020-10-15 03:18:24,694 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 03:18:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2020-10-15 03:18:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4729. [2020-10-15 03:18:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4729 states. [2020-10-15 03:18:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4729 states to 4729 states and 6844 transitions. [2020-10-15 03:18:25,792 INFO L78 Accepts]: Start accepts. Automaton has 4729 states and 6844 transitions. Word has length 78 [2020-10-15 03:18:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:25,792 INFO L479 AbstractCegarLoop]: Abstraction has 4729 states and 6844 transitions. [2020-10-15 03:18:25,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4729 states and 6844 transitions. [2020-10-15 03:18:25,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:18:25,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:25,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:18:25,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 03:18:25,795 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:25,795 INFO L82 PathProgramCache]: Analyzing trace with hash 746702972, now seen corresponding path program 1 times [2020-10-15 03:18:25,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:25,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818949179] [2020-10-15 03:18:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:25,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:25,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:25,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:25,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:26,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:27,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:30,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:30,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:18:30,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:18:30,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:18:30,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:30,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:18:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:18:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:18:30,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:31,059 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:18:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:31,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:31,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:31,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:31,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:31,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:18:31,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:31,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:18:31,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:31,126 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 03:18:31,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818949179] [2020-10-15 03:18:31,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:31,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:18:31,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392252324] [2020-10-15 03:18:31,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:18:31,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:31,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:18:31,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:18:31,129 INFO L87 Difference]: Start difference. First operand 4729 states and 6844 transitions. Second operand 9 states. [2020-10-15 03:18:31,370 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-15 03:18:33,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:33,874 INFO L93 Difference]: Finished difference Result 10898 states and 15851 transitions. [2020-10-15 03:18:33,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:18:33,876 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-15 03:18:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:33,885 INFO L225 Difference]: With dead ends: 10898 [2020-10-15 03:18:33,886 INFO L226 Difference]: Without dead ends: 7019 [2020-10-15 03:18:33,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:18:33,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7019 states. [2020-10-15 03:18:35,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7019 to 4729. [2020-10-15 03:18:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4729 states. [2020-10-15 03:18:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4729 states to 4729 states and 6843 transitions. [2020-10-15 03:18:35,101 INFO L78 Accepts]: Start accepts. Automaton has 4729 states and 6843 transitions. Word has length 79 [2020-10-15 03:18:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:35,101 INFO L479 AbstractCegarLoop]: Abstraction has 4729 states and 6843 transitions. [2020-10-15 03:18:35,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:18:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4729 states and 6843 transitions. [2020-10-15 03:18:35,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 03:18:35,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:35,104 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] [2020-10-15 03:18:35,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 03:18:35,104 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:35,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:35,104 INFO L82 PathProgramCache]: Analyzing trace with hash -808834984, now seen corresponding path program 1 times [2020-10-15 03:18:35,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:35,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200476058] [2020-10-15 03:18:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:35,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:35,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:35,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:35,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:36,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:36,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:36,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:36,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:36,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:40,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:40,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 03:18:40,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:18:40,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:18:40,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:40,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:18:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:18:40,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:40,357 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:18:40,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:40,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:40,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:40,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:40,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:40,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:18:40,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:40,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:18:40,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:40,394 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 03:18:40,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200476058] [2020-10-15 03:18:40,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:40,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:18:40,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637234767] [2020-10-15 03:18:40,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:40,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:40,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:40,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:40,397 INFO L87 Difference]: Start difference. First operand 4729 states and 6843 transitions. Second operand 6 states. [2020-10-15 03:18:40,590 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 03:18:42,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:42,135 INFO L93 Difference]: Finished difference Result 8565 states and 12497 transitions. [2020-10-15 03:18:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:18:42,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-15 03:18:42,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:42,142 INFO L225 Difference]: With dead ends: 8565 [2020-10-15 03:18:42,142 INFO L226 Difference]: Without dead ends: 4731 [2020-10-15 03:18:42,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:18:42,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2020-10-15 03:18:42,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 1883. [2020-10-15 03:18:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2020-10-15 03:18:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2670 transitions. [2020-10-15 03:18:42,660 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2670 transitions. Word has length 81 [2020-10-15 03:18:42,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:42,660 INFO L479 AbstractCegarLoop]: Abstraction has 1883 states and 2670 transitions. [2020-10-15 03:18:42,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:42,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2670 transitions. [2020-10-15 03:18:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 03:18:42,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:42,662 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] [2020-10-15 03:18:42,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 03:18:42,662 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:42,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:42,662 INFO L82 PathProgramCache]: Analyzing trace with hash 165128125, now seen corresponding path program 1 times [2020-10-15 03:18:42,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:42,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578680376] [2020-10-15 03:18:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:42,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:42,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:42,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:42,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:44,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:47,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:47,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 03:18:47,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:18:47,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:18:47,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:47,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 03:18:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:18:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:18:47,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:47,979 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-15 03:18:48,498 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:18:48,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:48,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:48,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:48,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:18:48,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:48,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:48,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578680376] [2020-10-15 03:18:48,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:48,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 03:18:48,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90096133] [2020-10-15 03:18:48,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 03:18:48,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:48,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 03:18:48,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:18:48,633 INFO L87 Difference]: Start difference. First operand 1883 states and 2670 transitions. Second operand 15 states. [2020-10-15 03:18:48,885 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-15 03:18:49,523 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 185 [2020-10-15 03:18:49,924 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-15 03:18:55,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:55,872 INFO L93 Difference]: Finished difference Result 14492 states and 20876 transitions. [2020-10-15 03:18:55,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 03:18:55,873 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 81 [2020-10-15 03:18:55,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:55,889 INFO L225 Difference]: With dead ends: 14492 [2020-10-15 03:18:55,889 INFO L226 Difference]: Without dead ends: 12691 [2020-10-15 03:18:55,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2020-10-15 03:18:55,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12691 states. [2020-10-15 03:18:56,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12691 to 1893. [2020-10-15 03:18:56,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-10-15 03:18:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2681 transitions. [2020-10-15 03:18:56,523 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2681 transitions. Word has length 81 [2020-10-15 03:18:56,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:56,523 INFO L479 AbstractCegarLoop]: Abstraction has 1893 states and 2681 transitions. [2020-10-15 03:18:56,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 03:18:56,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2681 transitions. [2020-10-15 03:18:56,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:18:56,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:56,525 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] [2020-10-15 03:18:56,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 03:18:56,525 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:56,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:56,526 INFO L82 PathProgramCache]: Analyzing trace with hash 657548312, now seen corresponding path program 1 times [2020-10-15 03:18:56,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:56,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516197333] [2020-10-15 03:18:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:56,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:57,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:57,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:18:57,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:18:57,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-15 03:18:57,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:57,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 03:18:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 03:18:57,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:57,289 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:18:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:57,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:57,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:57,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:57,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:18:57,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:57,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:57,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516197333] [2020-10-15 03:18:57,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:57,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:18:57,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964771598] [2020-10-15 03:18:57,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:18:57,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:57,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:18:57,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:18:57,318 INFO L87 Difference]: Start difference. First operand 1893 states and 2681 transitions. Second operand 4 states. [2020-10-15 03:18:57,548 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-15 03:18:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:59,175 INFO L93 Difference]: Finished difference Result 5273 states and 7471 transitions. [2020-10-15 03:18:59,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:18:59,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-15 03:18:59,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:59,181 INFO L225 Difference]: With dead ends: 5273 [2020-10-15 03:18:59,181 INFO L226 Difference]: Without dead ends: 3479 [2020-10-15 03:18:59,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:18:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2020-10-15 03:19:00,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3321. [2020-10-15 03:19:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3321 states. [2020-10-15 03:19:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4659 transitions. [2020-10-15 03:19:00,182 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4659 transitions. Word has length 82 [2020-10-15 03:19:00,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:00,183 INFO L479 AbstractCegarLoop]: Abstraction has 3321 states and 4659 transitions. [2020-10-15 03:19:00,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:19:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4659 transitions. [2020-10-15 03:19:00,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 03:19:00,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:00,184 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] [2020-10-15 03:19:00,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 03:19:00,185 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:00,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:00,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1286292402, now seen corresponding path program 1 times [2020-10-15 03:19:00,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:00,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055147410] [2020-10-15 03:19:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:00,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:00,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:00,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 03:19:00,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:19:00,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-15 03:19:00,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:00,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:19:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-15 03:19:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 03:19:00,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:00,629 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:19:00,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:00,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:00,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:00,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:00,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:19:00,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:00,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:00,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:00,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:00,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:19:00,668 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 03:19:00,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055147410] [2020-10-15 03:19:00,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:00,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:19:00,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771456473] [2020-10-15 03:19:00,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:19:00,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:00,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:19:00,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:19:00,670 INFO L87 Difference]: Start difference. First operand 3321 states and 4659 transitions. Second operand 4 states. [2020-10-15 03:19:01,133 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-15 03:19:03,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:03,779 INFO L93 Difference]: Finished difference Result 9349 states and 13041 transitions. [2020-10-15 03:19:03,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:19:03,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-15 03:19:03,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:03,791 INFO L225 Difference]: With dead ends: 9349 [2020-10-15 03:19:03,792 INFO L226 Difference]: Without dead ends: 6127 [2020-10-15 03:19:03,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:19:03,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6127 states. [2020-10-15 03:19:05,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6127 to 5813. [2020-10-15 03:19:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5813 states. [2020-10-15 03:19:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5813 states to 5813 states and 8017 transitions. [2020-10-15 03:19:05,559 INFO L78 Accepts]: Start accepts. Automaton has 5813 states and 8017 transitions. Word has length 83 [2020-10-15 03:19:05,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:05,560 INFO L479 AbstractCegarLoop]: Abstraction has 5813 states and 8017 transitions. [2020-10-15 03:19:05,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:19:05,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5813 states and 8017 transitions. [2020-10-15 03:19:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:19:05,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:05,561 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] [2020-10-15 03:19:05,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 03:19:05,561 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:05,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:05,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1838989338, now seen corresponding path program 1 times [2020-10-15 03:19:05,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:05,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464735304] [2020-10-15 03:19:05,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:05,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:05,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:05,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:05,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:08,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:08,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:19:08,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:19:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3204 [2020-10-15 03:19:08,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:08,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:19:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:19:08,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:19:08,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:19:09,035 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:19:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:09,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:09,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:09,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:09,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:09,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:19:09,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:09,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:19:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:19:09,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:09,072 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 03:19:09,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464735304] [2020-10-15 03:19:09,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:09,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:19:09,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744023784] [2020-10-15 03:19:09,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:19:09,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:09,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:19:09,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:19:09,074 INFO L87 Difference]: Start difference. First operand 5813 states and 8017 transitions. Second operand 6 states. [2020-10-15 03:19:09,386 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 03:19:12,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:12,224 INFO L93 Difference]: Finished difference Result 12879 states and 17714 transitions. [2020-10-15 03:19:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:19:12,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-15 03:19:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:12,236 INFO L225 Difference]: With dead ends: 12879 [2020-10-15 03:19:12,236 INFO L226 Difference]: Without dead ends: 7165 [2020-10-15 03:19:12,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7165 states. [2020-10-15 03:19:13,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7165 to 2943. [2020-10-15 03:19:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2943 states. [2020-10-15 03:19:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 4021 transitions. [2020-10-15 03:19:13,213 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 4021 transitions. Word has length 84 [2020-10-15 03:19:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:13,214 INFO L479 AbstractCegarLoop]: Abstraction has 2943 states and 4021 transitions. [2020-10-15 03:19:13,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:19:13,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 4021 transitions. [2020-10-15 03:19:13,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:19:13,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:13,215 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] [2020-10-15 03:19:13,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 03:19:13,215 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:13,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1067125685, now seen corresponding path program 1 times [2020-10-15 03:19:13,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:13,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339048591] [2020-10-15 03:19:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:13,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:13,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:13,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:19:13,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:13,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-15 03:19:13,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:13,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:19:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-15 03:19:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 03:19:13,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:13,650 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:19:13,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:13,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:13,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:13,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:13,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:19:13,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:13,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:13,673 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 03:19:13,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339048591] [2020-10-15 03:19:13,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:13,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:19:13,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883070513] [2020-10-15 03:19:13,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:19:13,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:13,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:19:13,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:19:13,675 INFO L87 Difference]: Start difference. First operand 2943 states and 4021 transitions. Second operand 6 states. [2020-10-15 03:19:16,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:16,121 INFO L93 Difference]: Finished difference Result 5055 states and 6877 transitions. [2020-10-15 03:19:16,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:19:16,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-15 03:19:16,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:16,127 INFO L225 Difference]: With dead ends: 5055 [2020-10-15 03:19:16,127 INFO L226 Difference]: Without dead ends: 5053 [2020-10-15 03:19:16,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:16,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5053 states. [2020-10-15 03:19:17,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5053 to 3087. [2020-10-15 03:19:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3087 states. [2020-10-15 03:19:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4149 transitions. [2020-10-15 03:19:17,106 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4149 transitions. Word has length 84 [2020-10-15 03:19:17,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:17,107 INFO L479 AbstractCegarLoop]: Abstraction has 3087 states and 4149 transitions. [2020-10-15 03:19:17,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:19:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4149 transitions. [2020-10-15 03:19:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:19:17,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:17,108 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] [2020-10-15 03:19:17,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 03:19:17,108 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:17,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:17,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1411881090, now seen corresponding path program 1 times [2020-10-15 03:19:17,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:17,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46157601] [2020-10-15 03:19:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:17,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:17,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:17,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:17,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:17,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:17,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:17,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:17,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:18,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:19,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:22,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:22,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:19:22,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:19:22,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:19:22,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:22,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:19:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:19:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:19:22,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:22,480 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:19:22,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:22,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:22,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:22,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:22,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:22,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:19:22,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:22,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:19:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:19:22,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:22,523 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 03:19:22,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46157601] [2020-10-15 03:19:22,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:22,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:19:22,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842149103] [2020-10-15 03:19:22,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:19:22,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:22,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:19:22,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:19:22,524 INFO L87 Difference]: Start difference. First operand 3087 states and 4149 transitions. Second operand 8 states. [2020-10-15 03:19:22,709 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 03:19:25,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:25,125 INFO L93 Difference]: Finished difference Result 6553 states and 8871 transitions. [2020-10-15 03:19:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:19:25,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-15 03:19:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:25,131 INFO L225 Difference]: With dead ends: 6553 [2020-10-15 03:19:25,131 INFO L226 Difference]: Without dead ends: 4703 [2020-10-15 03:19:25,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:19:25,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2020-10-15 03:19:26,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 3031. [2020-10-15 03:19:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3031 states. [2020-10-15 03:19:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 4009 transitions. [2020-10-15 03:19:26,355 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 4009 transitions. Word has length 84 [2020-10-15 03:19:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:26,355 INFO L479 AbstractCegarLoop]: Abstraction has 3031 states and 4009 transitions. [2020-10-15 03:19:26,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:19:26,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 4009 transitions. [2020-10-15 03:19:26,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:19:26,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:26,357 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] [2020-10-15 03:19:26,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 03:19:26,357 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:26,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:26,357 INFO L82 PathProgramCache]: Analyzing trace with hash -576064407, now seen corresponding path program 1 times [2020-10-15 03:19:26,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:26,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343066651] [2020-10-15 03:19:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:26,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:26,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:26,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:26,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:19:26,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:19:26,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-15 03:19:26,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:26,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:19:26,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:19:26,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:19:26,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:26,827 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:19:26,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:26,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:26,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:26,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:26,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:26,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:19:26,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:26,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:26,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:26,854 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 03:19:26,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343066651] [2020-10-15 03:19:26,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:26,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:19:26,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682205422] [2020-10-15 03:19:26,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:19:26,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:26,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:19:26,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:19:26,856 INFO L87 Difference]: Start difference. First operand 3031 states and 4009 transitions. Second operand 6 states. [2020-10-15 03:19:27,032 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:19:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:29,054 INFO L93 Difference]: Finished difference Result 6373 states and 8524 transitions. [2020-10-15 03:19:29,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:19:29,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-15 03:19:29,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:29,060 INFO L225 Difference]: With dead ends: 6373 [2020-10-15 03:19:29,060 INFO L226 Difference]: Without dead ends: 4579 [2020-10-15 03:19:29,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:19:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2020-10-15 03:19:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 4519. [2020-10-15 03:19:30,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4519 states. [2020-10-15 03:19:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4519 states to 4519 states and 5895 transitions. [2020-10-15 03:19:30,643 INFO L78 Accepts]: Start accepts. Automaton has 4519 states and 5895 transitions. Word has length 85 [2020-10-15 03:19:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:30,643 INFO L479 AbstractCegarLoop]: Abstraction has 4519 states and 5895 transitions. [2020-10-15 03:19:30,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:19:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4519 states and 5895 transitions. [2020-10-15 03:19:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 03:19:30,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:30,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:19:30,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 03:19:30,645 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:30,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:30,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1586116135, now seen corresponding path program 1 times [2020-10-15 03:19:30,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:30,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752279676] [2020-10-15 03:19:30,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:30,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:30,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:30,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:31,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:32,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:32,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:32,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:35,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:35,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 03:19:35,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:19:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:19:35,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:35,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:35,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:19:35,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:19:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 03:19:35,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:35,905 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:19:35,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:35,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:35,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:35,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:35,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:19:35,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:35,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:35,932 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 03:19:35,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752279676] [2020-10-15 03:19:35,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:19:35,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 03:19:35,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248753193] [2020-10-15 03:19:35,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:19:35,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:35,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:19:35,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:19:35,934 INFO L87 Difference]: Start difference. First operand 4519 states and 5895 transitions. Second operand 6 states. [2020-10-15 03:19:36,122 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 03:19:38,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:38,753 INFO L93 Difference]: Finished difference Result 7451 states and 9762 transitions. [2020-10-15 03:19:38,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:19:38,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-15 03:19:38,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:38,759 INFO L225 Difference]: With dead ends: 7451 [2020-10-15 03:19:38,759 INFO L226 Difference]: Without dead ends: 5713 [2020-10-15 03:19:38,762 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 03:19:38,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2020-10-15 03:19:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 5419. [2020-10-15 03:19:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5419 states. [2020-10-15 03:19:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 7083 transitions. [2020-10-15 03:19:40,798 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 7083 transitions. Word has length 105 [2020-10-15 03:19:40,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:40,798 INFO L479 AbstractCegarLoop]: Abstraction has 5419 states and 7083 transitions. [2020-10-15 03:19:40,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:19:40,798 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 7083 transitions. [2020-10-15 03:19:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 03:19:40,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:40,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:40,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 03:19:40,801 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:40,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1025430542, now seen corresponding path program 1 times [2020-10-15 03:19:40,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:40,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326478027] [2020-10-15 03:19:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:40,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:41,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:42,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:42,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:42,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:44,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:44,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:45,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 03:19:45,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:19:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:19:45,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:45,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:19:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:19:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 03:19:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:46,384 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:19:46,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:46,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:46,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:46,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:46,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:46,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:19:46,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:46,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:46,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:46,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326478027] [2020-10-15 03:19:46,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:19:46,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 03:19:46,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867344246] [2020-10-15 03:19:46,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:19:46,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:46,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:19:46,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:19:46,451 INFO L87 Difference]: Start difference. First operand 5419 states and 7083 transitions. Second operand 10 states. [2020-10-15 03:19:46,655 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 142