/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:35:45,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:35:45,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:35:45,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:35:45,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:35:45,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:35:45,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:35:45,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:35:45,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:35:45,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:35:45,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:35:45,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:35:45,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:35:45,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:35:45,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:35:45,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:35:45,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:35:45,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:35:45,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:35:45,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:35:45,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:35:45,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:35:45,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:35:45,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:35:45,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:35:45,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:35:45,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:35:45,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:35:45,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:35:45,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:35:45,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:35:45,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:35:45,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:35:45,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:35:45,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:35:45,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:35:45,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:35:45,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:35:45,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:35:45,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:35:45,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:35:45,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:35:45,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:35:45,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:35:45,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:35:45,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:35:45,239 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:35:45,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:35:45,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:35:45,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:35:45,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:35:45,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:35:45,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:35:45,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:35:45,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:35:45,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:35:45,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:35:45,242 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:35:45,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:35:45,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:35:45,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:35:45,243 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:35:45,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:35:45,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:35:45,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:35:45,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:35:45,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:35:45,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:35:45,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:35:45,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:35:45,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:35:45,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:35:45,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:35:45,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:35:45,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:35:45,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:35:45,587 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:35:45,587 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:35:45,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b547509e0/bbb9962bdf844e59932079f563cffbd3/FLAG06403f185 [2020-10-14 09:35:46,292 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:35:46,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:35:46,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b547509e0/bbb9962bdf844e59932079f563cffbd3/FLAG06403f185 [2020-10-14 09:35:46,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b547509e0/bbb9962bdf844e59932079f563cffbd3 [2020-10-14 09:35:46,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:35:46,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:35:46,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:35:46,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:35:46,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:35:46,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:35:46" (1/1) ... [2020-10-14 09:35:46,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b30b002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:46, skipping insertion in model container [2020-10-14 09:35:46,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:35:46" (1/1) ... [2020-10-14 09:35:46,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:35:46,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:35:47,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:35:47,558 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:35:48,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:35:48,139 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:35:48,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:48 WrapperNode [2020-10-14 09:35:48,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:35:48,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:35:48,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:35:48,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:35:48,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:48" (1/1) ... [2020-10-14 09:35:48,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:48" (1/1) ... [2020-10-14 09:35:48,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:48" (1/1) ... [2020-10-14 09:35:48,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:48" (1/1) ... [2020-10-14 09:35:48,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:48" (1/1) ... [2020-10-14 09:35:48,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:48" (1/1) ... [2020-10-14 09:35:48,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:48" (1/1) ... [2020-10-14 09:35:48,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:35:48,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:35:48,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:35:48,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:35:48,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:35:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:35:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:35:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:35:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:35:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:35:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:35:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:35:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:35:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:35:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:35:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:35:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:35:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:35:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:35:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:35:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:35:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:35:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:35:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:35:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:35:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:35:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:35:51,298 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:35:51,298 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:35:51,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:35:51 BoogieIcfgContainer [2020-10-14 09:35:51,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:35:51,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:35:51,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:35:51,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:35:51,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:35:46" (1/3) ... [2020-10-14 09:35:51,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29461dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:35:51, skipping insertion in model container [2020-10-14 09:35:51,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:48" (2/3) ... [2020-10-14 09:35:51,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29461dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:35:51, skipping insertion in model container [2020-10-14 09:35:51,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:35:51" (3/3) ... [2020-10-14 09:35:51,331 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:35:51,342 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:35:51,359 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:35:51,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:35:51,402 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:35:51,402 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:35:51,403 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:35:51,403 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:35:51,403 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:35:51,403 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:35:51,403 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:35:51,403 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:35:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states. [2020-10-14 09:35:51,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-14 09:35:51,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:35:51,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:35:51,466 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:35:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:35:51,473 INFO L82 PathProgramCache]: Analyzing trace with hash -368782429, now seen corresponding path program 1 times [2020-10-14 09:35:51,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:35:51,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230535457] [2020-10-14 09:35:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:35:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:52,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:54,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:55,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:55,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:55,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:55,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:56,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:56,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:57,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:57,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-14 09:35:57,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:35:57,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-14 09:35:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:57,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:35:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 09:35:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-14 09:35:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:35:58,183 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:35:58,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:58,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:58,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:58,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:58,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:35:58,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:58,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:58,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:35:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:35:58,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230535457] [2020-10-14 09:35:58,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:58,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:35:58,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295088104] [2020-10-14 09:35:58,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:35:58,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:58,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:35:58,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:58,418 INFO L87 Difference]: Start difference. First operand 789 states. Second operand 4 states. [2020-10-14 09:35:58,910 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-14 09:36:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:03,837 INFO L93 Difference]: Finished difference Result 1489 states and 2621 transitions. [2020-10-14 09:36:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:36:03,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-14 09:36:03,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:03,877 INFO L225 Difference]: With dead ends: 1489 [2020-10-14 09:36:03,877 INFO L226 Difference]: Without dead ends: 1273 [2020-10-14 09:36:03,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:36:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-10-14 09:36:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1271. [2020-10-14 09:36:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-10-14 09:36:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1978 transitions. [2020-10-14 09:36:04,046 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1978 transitions. Word has length 326 [2020-10-14 09:36:04,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:04,053 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1978 transitions. [2020-10-14 09:36:04,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1978 transitions. [2020-10-14 09:36:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-14 09:36:04,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:04,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:04,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:36:04,074 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:04,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:04,074 INFO L82 PathProgramCache]: Analyzing trace with hash 420377409, now seen corresponding path program 1 times [2020-10-14 09:36:04,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:04,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372232813] [2020-10-14 09:36:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:04,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:04,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:05,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:05,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:06,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:06,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:06,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:06,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:06,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:06,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:07,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:07,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:07,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:09,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:09,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-14 09:36:09,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:36:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-14 09:36:09,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:09,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 09:36:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-14 09:36:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:10,004 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:36:10,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:10,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:10,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:10,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:10,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:36:10,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:10,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:36:10,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372232813] [2020-10-14 09:36:10,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:10,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:10,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593748301] [2020-10-14 09:36:10,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:10,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:10,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:10,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:10,332 INFO L87 Difference]: Start difference. First operand 1271 states and 1978 transitions. Second operand 4 states. [2020-10-14 09:36:10,975 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-14 09:36:15,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:15,277 INFO L93 Difference]: Finished difference Result 2607 states and 4089 transitions. [2020-10-14 09:36:15,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:36:15,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-14 09:36:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:15,299 INFO L225 Difference]: With dead ends: 2607 [2020-10-14 09:36:15,299 INFO L226 Difference]: Without dead ends: 2225 [2020-10-14 09:36:15,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:36:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2020-10-14 09:36:15,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2223. [2020-10-14 09:36:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2223 states. [2020-10-14 09:36:15,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3452 transitions. [2020-10-14 09:36:15,428 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3452 transitions. Word has length 326 [2020-10-14 09:36:15,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:15,429 INFO L479 AbstractCegarLoop]: Abstraction has 2223 states and 3452 transitions. [2020-10-14 09:36:15,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3452 transitions. [2020-10-14 09:36:15,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-14 09:36:15,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:15,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:15,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:36:15,445 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1550523160, now seen corresponding path program 1 times [2020-10-14 09:36:15,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:15,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983906571] [2020-10-14 09:36:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:15,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:16,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:16,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:17,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:17,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:17,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:18,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:18,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:18,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:20,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:20,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-14 09:36:20,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:36:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 09:36:20,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:20,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 09:36:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-14 09:36:20,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:21,237 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:36:21,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:21,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:21,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:21,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:21,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:36:21,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:21,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:21,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:21,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:36:21,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983906571] [2020-10-14 09:36:21,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:21,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:21,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554571045] [2020-10-14 09:36:21,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:21,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:21,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:21,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:21,500 INFO L87 Difference]: Start difference. First operand 2223 states and 3452 transitions. Second operand 4 states. [2020-10-14 09:36:21,957 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-14 09:36:25,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:25,952 INFO L93 Difference]: Finished difference Result 4715 states and 7386 transitions. [2020-10-14 09:36:25,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:36:25,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-14 09:36:25,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:25,975 INFO L225 Difference]: With dead ends: 4715 [2020-10-14 09:36:25,976 INFO L226 Difference]: Without dead ends: 4049 [2020-10-14 09:36:25,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:36:25,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4049 states. [2020-10-14 09:36:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4049 to 4047. [2020-10-14 09:36:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4047 states. [2020-10-14 09:36:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 6268 transitions. [2020-10-14 09:36:26,108 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 6268 transitions. Word has length 326 [2020-10-14 09:36:26,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:26,109 INFO L479 AbstractCegarLoop]: Abstraction has 4047 states and 6268 transitions. [2020-10-14 09:36:26,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 6268 transitions. [2020-10-14 09:36:26,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-14 09:36:26,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:26,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:26,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:36:26,119 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:26,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:26,120 INFO L82 PathProgramCache]: Analyzing trace with hash 405693337, now seen corresponding path program 1 times [2020-10-14 09:36:26,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:26,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319773973] [2020-10-14 09:36:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:26,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:26,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:28,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:28,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:28,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:28,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:31,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:31,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-14 09:36:31,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:36:31,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 09:36:31,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:31,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:31,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:36:31,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:36:31,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 09:36:31,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:31,965 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:36:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:31,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:32,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:32,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:32,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:36:32,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:32,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:32,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:32,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:32,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:32,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:36:32,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319773973] [2020-10-14 09:36:32,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:32,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:36:32,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054290453] [2020-10-14 09:36:32,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:36:32,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:32,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:36:32,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:36:32,272 INFO L87 Difference]: Start difference. First operand 4047 states and 6268 transitions. Second operand 5 states. [2020-10-14 09:36:38,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:38,767 INFO L93 Difference]: Finished difference Result 12001 states and 18571 transitions. [2020-10-14 09:36:38,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:36:38,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-14 09:36:38,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:38,805 INFO L225 Difference]: With dead ends: 12001 [2020-10-14 09:36:38,805 INFO L226 Difference]: Without dead ends: 7967 [2020-10-14 09:36:38,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:36:38,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7967 states. [2020-10-14 09:36:39,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7967 to 7965. [2020-10-14 09:36:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7965 states. [2020-10-14 09:36:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7965 states to 7965 states and 12270 transitions. [2020-10-14 09:36:39,212 INFO L78 Accepts]: Start accepts. Automaton has 7965 states and 12270 transitions. Word has length 326 [2020-10-14 09:36:39,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:39,213 INFO L479 AbstractCegarLoop]: Abstraction has 7965 states and 12270 transitions. [2020-10-14 09:36:39,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:36:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 7965 states and 12270 transitions. [2020-10-14 09:36:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-14 09:36:39,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:39,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:39,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:36:39,233 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:39,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:39,233 INFO L82 PathProgramCache]: Analyzing trace with hash -806411643, now seen corresponding path program 1 times [2020-10-14 09:36:39,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:39,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569061266] [2020-10-14 09:36:39,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:39,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:39,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:39,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:40,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:40,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:40,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:40,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:40,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:40,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:40,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:40,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:40,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:41,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:41,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:44,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:44,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-14 09:36:44,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:36:44,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 09:36:44,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:44,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:36:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 09:36:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:44,829 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:36:44,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:44,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:44,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:44,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:44,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:44,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:36:44,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:44,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:36:44,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569061266] [2020-10-14 09:36:44,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:44,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:44,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334316111] [2020-10-14 09:36:44,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:44,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:44,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:44,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:44,990 INFO L87 Difference]: Start difference. First operand 7965 states and 12270 transitions. Second operand 4 states. [2020-10-14 09:36:53,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:53,048 INFO L93 Difference]: Finished difference Result 23423 states and 36009 transitions. [2020-10-14 09:36:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:36:53,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-10-14 09:36:53,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:53,104 INFO L225 Difference]: With dead ends: 23423 [2020-10-14 09:36:53,104 INFO L226 Difference]: Without dead ends: 15598 [2020-10-14 09:36:53,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:53,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15598 states. [2020-10-14 09:36:53,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15598 to 15596. [2020-10-14 09:36:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15596 states. [2020-10-14 09:36:53,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15596 states to 15596 states and 23874 transitions. [2020-10-14 09:36:53,705 INFO L78 Accepts]: Start accepts. Automaton has 15596 states and 23874 transitions. Word has length 328 [2020-10-14 09:36:53,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:53,705 INFO L479 AbstractCegarLoop]: Abstraction has 15596 states and 23874 transitions. [2020-10-14 09:36:53,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:53,705 INFO L276 IsEmpty]: Start isEmpty. Operand 15596 states and 23874 transitions. [2020-10-14 09:36:53,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-14 09:36:53,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:53,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:53,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:36:53,738 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:53,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1426419210, now seen corresponding path program 1 times [2020-10-14 09:36:53,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:53,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403207194] [2020-10-14 09:36:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:53,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:53,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:53,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:58,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:58,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-14 09:36:58,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:36:58,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 09:36:58,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:58,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:36:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:36:58,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:59,271 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:36:59,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:59,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:59,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:59,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:59,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:59,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:36:59,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:59,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:59,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:36:59,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403207194] [2020-10-14 09:36:59,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:59,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:59,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145348072] [2020-10-14 09:36:59,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:59,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:59,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:59,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:59,363 INFO L87 Difference]: Start difference. First operand 15596 states and 23874 transitions. Second operand 4 states. [2020-10-14 09:37:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:04,021 INFO L93 Difference]: Finished difference Result 46629 states and 71346 transitions. [2020-10-14 09:37:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:37:04,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-10-14 09:37:04,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:04,072 INFO L225 Difference]: With dead ends: 46629 [2020-10-14 09:37:04,072 INFO L226 Difference]: Without dead ends: 31060 [2020-10-14 09:37:04,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:04,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31060 states. [2020-10-14 09:37:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31060 to 15607. [2020-10-14 09:37:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15607 states. [2020-10-14 09:37:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15607 states to 15607 states and 23889 transitions. [2020-10-14 09:37:04,919 INFO L78 Accepts]: Start accepts. Automaton has 15607 states and 23889 transitions. Word has length 328 [2020-10-14 09:37:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:04,920 INFO L479 AbstractCegarLoop]: Abstraction has 15607 states and 23889 transitions. [2020-10-14 09:37:04,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 15607 states and 23889 transitions. [2020-10-14 09:37:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-14 09:37:04,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:04,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:04,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:37:04,948 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:04,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1038980822, now seen corresponding path program 1 times [2020-10-14 09:37:04,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:04,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269909191] [2020-10-14 09:37:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:05,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:05,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:05,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:05,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:05,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:05,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:05,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:05,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:06,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:06,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:06,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:10,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:10,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-14 09:37:10,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:37:10,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:37:10,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:10,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:10,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 09:37:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:37:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:10,447 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:37:10,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:10,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:10,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:10,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:10,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:37:10,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:10,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:10,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269909191] [2020-10-14 09:37:10,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:10,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:10,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67555501] [2020-10-14 09:37:10,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:10,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:10,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:10,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:10,524 INFO L87 Difference]: Start difference. First operand 15607 states and 23889 transitions. Second operand 4 states. [2020-10-14 09:37:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:19,305 INFO L93 Difference]: Finished difference Result 46726 states and 71513 transitions. [2020-10-14 09:37:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:37:19,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2020-10-14 09:37:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:19,367 INFO L225 Difference]: With dead ends: 46726 [2020-10-14 09:37:19,367 INFO L226 Difference]: Without dead ends: 31169 [2020-10-14 09:37:19,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:19,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31169 states. [2020-10-14 09:37:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31169 to 15623. [2020-10-14 09:37:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15623 states. [2020-10-14 09:37:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15623 states to 15623 states and 23908 transitions. [2020-10-14 09:37:20,051 INFO L78 Accepts]: Start accepts. Automaton has 15623 states and 23908 transitions. Word has length 329 [2020-10-14 09:37:20,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:20,052 INFO L479 AbstractCegarLoop]: Abstraction has 15623 states and 23908 transitions. [2020-10-14 09:37:20,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 15623 states and 23908 transitions. [2020-10-14 09:37:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-14 09:37:20,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:20,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:20,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:37:20,078 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:20,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:20,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1758000128, now seen corresponding path program 1 times [2020-10-14 09:37:20,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:20,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359429750] [2020-10-14 09:37:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:20,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:20,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:20,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:20,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:20,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:20,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:20,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:20,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:20,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:21,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:21,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:21,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:21,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:25,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:25,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-14 09:37:25,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:37:25,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:37:25,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:25,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:37:25,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 09:37:25,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:25,652 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:37:25,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:25,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:25,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:25,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:25,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:37:25,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:25,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:25,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:25,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359429750] [2020-10-14 09:37:25,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:25,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:25,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868485831] [2020-10-14 09:37:25,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:25,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:25,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:25,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:25,766 INFO L87 Difference]: Start difference. First operand 15623 states and 23908 transitions. Second operand 4 states. [2020-10-14 09:37:34,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:34,305 INFO L93 Difference]: Finished difference Result 45980 states and 70241 transitions. [2020-10-14 09:37:34,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:37:34,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-10-14 09:37:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:34,375 INFO L225 Difference]: With dead ends: 45980 [2020-10-14 09:37:34,376 INFO L226 Difference]: Without dead ends: 30554 [2020-10-14 09:37:34,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:34,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30554 states. [2020-10-14 09:37:35,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30554 to 30552. [2020-10-14 09:37:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30552 states. [2020-10-14 09:37:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30552 states to 30552 states and 46444 transitions. [2020-10-14 09:37:36,621 INFO L78 Accepts]: Start accepts. Automaton has 30552 states and 46444 transitions. Word has length 330 [2020-10-14 09:37:36,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:36,622 INFO L479 AbstractCegarLoop]: Abstraction has 30552 states and 46444 transitions. [2020-10-14 09:37:36,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand 30552 states and 46444 transitions. [2020-10-14 09:37:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-14 09:37:36,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:36,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:36,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:37:36,676 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:36,677 INFO L82 PathProgramCache]: Analyzing trace with hash -730946851, now seen corresponding path program 1 times [2020-10-14 09:37:36,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:36,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590832981] [2020-10-14 09:37:36,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:36,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:38,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:38,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:38,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:38,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:41,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:41,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-14 09:37:41,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:37:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:37:41,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:41,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:37:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:37:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 09:37:41,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:42,357 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:37:42,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:42,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:42,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:42,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:37:42,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:42,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:42,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:42,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:42,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:42,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590832981] [2020-10-14 09:37:42,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:42,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:37:42,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944018620] [2020-10-14 09:37:42,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:37:42,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:42,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:37:42,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:37:42,508 INFO L87 Difference]: Start difference. First operand 30552 states and 46444 transitions. Second operand 5 states. [2020-10-14 09:37:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:50,649 INFO L93 Difference]: Finished difference Result 90510 states and 137388 transitions. [2020-10-14 09:37:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:37:50,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-14 09:37:50,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:50,735 INFO L225 Difference]: With dead ends: 90510 [2020-10-14 09:37:50,735 INFO L226 Difference]: Without dead ends: 60011 [2020-10-14 09:37:50,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:37:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60011 states. [2020-10-14 09:37:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60011 to 60003. [2020-10-14 09:37:52,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60003 states. [2020-10-14 09:37:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60003 states to 60003 states and 90615 transitions. [2020-10-14 09:37:52,805 INFO L78 Accepts]: Start accepts. Automaton has 60003 states and 90615 transitions. Word has length 330 [2020-10-14 09:37:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:52,806 INFO L479 AbstractCegarLoop]: Abstraction has 60003 states and 90615 transitions. [2020-10-14 09:37:52,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:37:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 60003 states and 90615 transitions. [2020-10-14 09:37:52,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-14 09:37:52,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:52,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:52,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:37:52,851 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:52,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:52,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1818066881, now seen corresponding path program 1 times [2020-10-14 09:37:52,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:52,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447496197] [2020-10-14 09:37:52,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:53,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:53,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:53,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:53,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:57,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:57,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 09:37:57,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:37:57,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 09:37:57,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:57,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 09:37:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 09:37:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:58,369 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:37:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:58,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:58,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:58,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:58,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:58,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:37:58,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:58,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:58,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:58,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447496197] [2020-10-14 09:37:58,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:58,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:58,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198474826] [2020-10-14 09:37:58,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:58,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:58,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:58,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:58,480 INFO L87 Difference]: Start difference. First operand 60003 states and 90615 transitions. Second operand 4 states. [2020-10-14 09:38:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:11,520 INFO L93 Difference]: Finished difference Result 176669 states and 266192 transitions. [2020-10-14 09:38:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:38:11,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-10-14 09:38:11,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:11,634 INFO L225 Difference]: With dead ends: 176669 [2020-10-14 09:38:11,635 INFO L226 Difference]: Without dead ends: 117247 [2020-10-14 09:38:11,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:11,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117247 states. [2020-10-14 09:38:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117247 to 117245. [2020-10-14 09:38:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117245 states. [2020-10-14 09:38:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117245 states to 117245 states and 175662 transitions. [2020-10-14 09:38:15,497 INFO L78 Accepts]: Start accepts. Automaton has 117245 states and 175662 transitions. Word has length 331 [2020-10-14 09:38:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:15,497 INFO L479 AbstractCegarLoop]: Abstraction has 117245 states and 175662 transitions. [2020-10-14 09:38:15,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:15,498 INFO L276 IsEmpty]: Start isEmpty. Operand 117245 states and 175662 transitions. [2020-10-14 09:38:15,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-14 09:38:15,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:15,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:15,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:38:15,574 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:15,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:15,574 INFO L82 PathProgramCache]: Analyzing trace with hash -234242260, now seen corresponding path program 1 times [2020-10-14 09:38:15,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:15,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068447298] [2020-10-14 09:38:15,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:15,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:15,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:16,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:20,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:20,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:20,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:20,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-14 09:38:20,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:38:20,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5248 [2020-10-14 09:38:20,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:20,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:38:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:38:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 09:38:20,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:21,441 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:38:21,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:21,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:21,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:21,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:21,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:38:21,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:21,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:38:21,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068447298] [2020-10-14 09:38:21,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:21,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:38:21,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873586597] [2020-10-14 09:38:21,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:38:21,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:21,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:38:21,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:38:21,589 INFO L87 Difference]: Start difference. First operand 117245 states and 175662 transitions. Second operand 5 states. [2020-10-14 09:38:33,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:33,039 INFO L93 Difference]: Finished difference Result 236932 states and 354999 transitions. [2020-10-14 09:38:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:38:33,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-14 09:38:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:33,180 INFO L225 Difference]: With dead ends: 236932 [2020-10-14 09:38:33,180 INFO L226 Difference]: Without dead ends: 119830 [2020-10-14 09:38:33,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:38:33,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119830 states. [2020-10-14 09:38:40,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119830 to 117212. [2020-10-14 09:38:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117212 states. [2020-10-14 09:38:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117212 states to 117212 states and 175580 transitions. [2020-10-14 09:38:40,817 INFO L78 Accepts]: Start accepts. Automaton has 117212 states and 175580 transitions. Word has length 332 [2020-10-14 09:38:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:40,817 INFO L479 AbstractCegarLoop]: Abstraction has 117212 states and 175580 transitions. [2020-10-14 09:38:40,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:38:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 117212 states and 175580 transitions. [2020-10-14 09:38:40,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 09:38:40,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:40,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:40,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:38:40,884 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:40,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:40,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1069081940, now seen corresponding path program 1 times [2020-10-14 09:38:40,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:40,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975885340] [2020-10-14 09:38:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:40,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:40,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:41,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:41,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:42,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:42,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:42,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:42,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:43,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:43,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:43,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:47,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:47,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-14 09:38:47,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:38:47,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6471 [2020-10-14 09:38:47,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:47,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:47,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:38:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:38:47,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:47,837 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:38:47,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:47,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:47,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:47,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:47,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:47,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:38:47,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:47,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:47,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:38:47,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975885340] [2020-10-14 09:38:47,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:47,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:47,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37834746] [2020-10-14 09:38:47,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:47,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:47,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:47,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:47,915 INFO L87 Difference]: Start difference. First operand 117212 states and 175580 transitions. Second operand 4 states. [2020-10-14 09:38:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:59,685 INFO L93 Difference]: Finished difference Result 351071 states and 525823 transitions. [2020-10-14 09:38:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:38:59,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2020-10-14 09:38:59,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:59,981 INFO L225 Difference]: With dead ends: 351071 [2020-10-14 09:38:59,982 INFO L226 Difference]: Without dead ends: 234104 [2020-10-14 09:39:00,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:00,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234104 states. [2020-10-14 09:39:08,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234104 to 117300. [2020-10-14 09:39:08,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117300 states. [2020-10-14 09:39:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117300 states to 117300 states and 175699 transitions. [2020-10-14 09:39:08,342 INFO L78 Accepts]: Start accepts. Automaton has 117300 states and 175699 transitions. Word has length 334 [2020-10-14 09:39:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:08,342 INFO L479 AbstractCegarLoop]: Abstraction has 117300 states and 175699 transitions. [2020-10-14 09:39:08,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:39:08,342 INFO L276 IsEmpty]: Start isEmpty. Operand 117300 states and 175699 transitions. [2020-10-14 09:39:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-14 09:39:08,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:08,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:39:08,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:39:08,427 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:08,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:08,428 INFO L82 PathProgramCache]: Analyzing trace with hash -330414202, now seen corresponding path program 1 times [2020-10-14 09:39:08,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:08,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133264318] [2020-10-14 09:39:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:09,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:09,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:09,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:09,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:10,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:13,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:13,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-14 09:39:13,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:39:13,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:39:13,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:13,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:39:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:39:13,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:13,922 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:39:13,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:13,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:13,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:13,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:13,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:13,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:39:13,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:13,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:13,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:13,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:13,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:13,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:39:14,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133264318] [2020-10-14 09:39:14,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:14,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:14,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348808239] [2020-10-14 09:39:14,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:14,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:14,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:14,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:14,004 INFO L87 Difference]: Start difference. First operand 117300 states and 175699 transitions. Second operand 4 states.