/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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:08:41,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:08:41,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:08:41,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:08:41,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:08:41,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:08:41,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:08:41,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:08:41,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:08:41,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:08:41,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:08:41,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:08:41,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:08:41,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:08:41,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:08:41,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:08:41,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:08:41,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:08:41,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:08:41,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:08:41,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:08:41,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:08:41,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:08:41,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:08:41,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:08:41,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:08:41,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:08:41,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:08:41,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:08:41,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:08:41,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:08:41,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:08:41,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:08:41,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:08:41,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:08:41,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:08:41,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:08:41,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:08:41,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:08:41,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:08:41,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:08:41,260 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 09:08:41,295 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:08:41,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:08:41,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:08:41,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:08:41,297 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:08:41,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:08:41,298 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:08:41,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:08:41,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:08:41,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:08:41,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:08:41,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:08:41,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:08:41,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:08:41,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:08:41,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:08:41,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:08:41,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:08:41,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:08:41,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:08:41,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:08:41,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:08:41,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:08:41,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:08:41,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:08:41,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:08:41,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:08:41,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:08:41,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:08:41,304 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 09:08:41,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:08:41,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:08:41,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:08:41,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:08:41,643 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:08:41,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 09:08:41,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a07a9312/1adbe7c474f3406bb72d3b56b7ed02f8/FLAG76091d0db [2020-10-14 09:08:42,390 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:08:42,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 09:08:42,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a07a9312/1adbe7c474f3406bb72d3b56b7ed02f8/FLAG76091d0db [2020-10-14 09:08:42,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a07a9312/1adbe7c474f3406bb72d3b56b7ed02f8 [2020-10-14 09:08:42,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:08:42,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:08:42,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:08:42,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:08:42,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:08:42,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:08:42" (1/1) ... [2020-10-14 09:08:42,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f9529c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:42, skipping insertion in model container [2020-10-14 09:08:42,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:08:42" (1/1) ... [2020-10-14 09:08:42,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:08:42,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:08:43,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:08:43,938 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:08:44,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:08:44,509 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:08:44,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:44 WrapperNode [2020-10-14 09:08:44,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:08:44,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:08:44,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:08:44,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:08:44,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:44" (1/1) ... [2020-10-14 09:08:44,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:44" (1/1) ... [2020-10-14 09:08:44,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:44" (1/1) ... [2020-10-14 09:08:44,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:44" (1/1) ... [2020-10-14 09:08:44,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:44" (1/1) ... [2020-10-14 09:08:44,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:44" (1/1) ... [2020-10-14 09:08:44,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:44" (1/1) ... [2020-10-14 09:08:44,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:08:44,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:08:44,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:08:44,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:08:44,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:44" (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 09:08:44,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:08:44,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:08:44,880 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:08:44,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:08:44,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:08:44,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:08:44,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:08:44,881 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:08:44,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:08:44,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:08:44,882 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:08:44,882 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:08:44,882 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:08:44,882 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:08:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:08:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:08:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:08:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:08:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:08:44,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:08:44,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:08:48,523 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:08:48,523 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:08:48,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:08:48 BoogieIcfgContainer [2020-10-14 09:08:48,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:08:48,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:08:48,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:08:48,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:08:48,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:08:42" (1/3) ... [2020-10-14 09:08:48,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37446a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:08:48, skipping insertion in model container [2020-10-14 09:08:48,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:44" (2/3) ... [2020-10-14 09:08:48,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37446a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:08:48, skipping insertion in model container [2020-10-14 09:08:48,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:08:48" (3/3) ... [2020-10-14 09:08:48,556 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 09:08:48,570 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:08:48,589 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-14 09:08:48,607 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-14 09:08:48,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:08:48,650 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:08:48,650 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:08:48,650 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:08:48,650 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:08:48,650 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:08:48,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:08:48,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:08:48,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states. [2020-10-14 09:08:48,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:08:48,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:48,728 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] [2020-10-14 09:08:48,728 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:48,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:48,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1316397812, now seen corresponding path program 1 times [2020-10-14 09:08:48,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:48,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741960538] [2020-10-14 09:08:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:49,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:49,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:49,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:50,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:50,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:54,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:08:54,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:08:54,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:08:54,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:54,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:54,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 09:08:54,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:08:54,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 09:08:54,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:08:56,765 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:08:56,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:56,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:56,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:56,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:56,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 09:08:56,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:56,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:08:56,879 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 09:08:56,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741960538] [2020-10-14 09:08:56,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:56,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 09:08:56,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356809785] [2020-10-14 09:08:56,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 09:08:56,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:56,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 09:08:56,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:08:56,907 INFO L87 Difference]: Start difference. First operand 1111 states. Second operand 7 states. [2020-10-14 09:08:58,618 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 622 [2020-10-14 09:09:11,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:11,667 INFO L93 Difference]: Finished difference Result 2058 states and 3570 transitions. [2020-10-14 09:09:11,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 09:09:11,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-14 09:09:11,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:11,698 INFO L225 Difference]: With dead ends: 2058 [2020-10-14 09:09:11,698 INFO L226 Difference]: Without dead ends: 1789 [2020-10-14 09:09:11,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-14 09:09:11,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-10-14 09:09:11,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1228. [2020-10-14 09:09:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2020-10-14 09:09:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1592 transitions. [2020-10-14 09:09:11,867 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1592 transitions. Word has length 68 [2020-10-14 09:09:11,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:11,867 INFO L479 AbstractCegarLoop]: Abstraction has 1228 states and 1592 transitions. [2020-10-14 09:09:11,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 09:09:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1592 transitions. [2020-10-14 09:09:11,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:09:11,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:11,876 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] [2020-10-14 09:09:11,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:09:11,877 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:11,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:11,877 INFO L82 PathProgramCache]: Analyzing trace with hash 361577628, now seen corresponding path program 1 times [2020-10-14 09:09:11,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:11,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018890962] [2020-10-14 09:09:11,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:12,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:12,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:12,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:13,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:16,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:16,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:09:16,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:09:16,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:09:16,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:16,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:09:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:09:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 09:09:16,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:09:18,736 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:09:18,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:18,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:18,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:18,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 09:09:18,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:18,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:09:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:09:18,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:09:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:18,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018890962] [2020-10-14 09:09:18,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:18,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:09:18,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473854939] [2020-10-14 09:09:18,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:09:18,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:18,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:09:18,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:09:18,941 INFO L87 Difference]: Start difference. First operand 1228 states and 1592 transitions. Second operand 6 states. [2020-10-14 09:09:20,694 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-14 09:09:28,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:28,183 INFO L93 Difference]: Finished difference Result 1827 states and 2401 transitions. [2020-10-14 09:09:28,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:09:28,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 09:09:28,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:28,192 INFO L225 Difference]: With dead ends: 1827 [2020-10-14 09:09:28,192 INFO L226 Difference]: Without dead ends: 1207 [2020-10-14 09:09:28,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:09:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2020-10-14 09:09:28,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1199. [2020-10-14 09:09:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1199 states. [2020-10-14 09:09:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1533 transitions. [2020-10-14 09:09:28,243 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1533 transitions. Word has length 68 [2020-10-14 09:09:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:28,243 INFO L479 AbstractCegarLoop]: Abstraction has 1199 states and 1533 transitions. [2020-10-14 09:09:28,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:09:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1533 transitions. [2020-10-14 09:09:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:09:28,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:28,247 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] [2020-10-14 09:09:28,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:09:28,247 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:28,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:28,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1668976807, now seen corresponding path program 1 times [2020-10-14 09:09:28,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:28,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262901058] [2020-10-14 09:09:28,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:28,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:29,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:31,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:32,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:33,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:33,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:09:33,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:09:33,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 09:09:33,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:33,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:09:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:09:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 09:09:33,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:09:35,059 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:09:35,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:35,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:35,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:35,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 09:09:35,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:35,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:35,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:09:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:35,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262901058] [2020-10-14 09:09:35,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:35,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:09:35,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976924346] [2020-10-14 09:09:35,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:09:35,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:35,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:09:35,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:09:35,155 INFO L87 Difference]: Start difference. First operand 1199 states and 1533 transitions. Second operand 6 states. [2020-10-14 09:09:36,842 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 617 [2020-10-14 09:09:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:46,105 INFO L93 Difference]: Finished difference Result 4271 states and 5953 transitions. [2020-10-14 09:09:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:09:46,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 09:09:46,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:46,123 INFO L225 Difference]: With dead ends: 4271 [2020-10-14 09:09:46,124 INFO L226 Difference]: Without dead ends: 3356 [2020-10-14 09:09:46,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:09:46,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2020-10-14 09:09:46,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 2228. [2020-10-14 09:09:46,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2020-10-14 09:09:46,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3064 transitions. [2020-10-14 09:09:46,237 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3064 transitions. Word has length 68 [2020-10-14 09:09:46,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:46,237 INFO L479 AbstractCegarLoop]: Abstraction has 2228 states and 3064 transitions. [2020-10-14 09:09:46,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:09:46,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3064 transitions. [2020-10-14 09:09:46,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:09:46,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:46,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:09:46,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:09:46,242 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:46,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:46,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1261571036, now seen corresponding path program 1 times [2020-10-14 09:09:46,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:46,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85116249] [2020-10-14 09:09:46,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:46,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:46,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:51,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:51,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:09:51,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:09:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 09:09:51,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:51,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:09:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 09:09:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:09:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:53,310 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:09:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:53,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:53,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:53,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:53,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:53,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 09:09:53,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:53,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:53,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:53,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:53,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:53,418 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 09:09:53,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85116249] [2020-10-14 09:09:53,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:53,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:09:53,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414820544] [2020-10-14 09:09:53,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:09:53,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:53,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:09:53,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:53,421 INFO L87 Difference]: Start difference. First operand 2228 states and 3064 transitions. Second operand 4 states. [2020-10-14 09:09:55,027 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 620 [2020-10-14 09:10:01,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:01,706 INFO L93 Difference]: Finished difference Result 4747 states and 6792 transitions. [2020-10-14 09:10:01,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:10:01,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 09:10:01,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:01,725 INFO L225 Difference]: With dead ends: 4747 [2020-10-14 09:10:01,726 INFO L226 Difference]: Without dead ends: 3360 [2020-10-14 09:10:01,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:10:01,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2020-10-14 09:10:01,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3352. [2020-10-14 09:10:01,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3352 states. [2020-10-14 09:10:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3352 states to 3352 states and 4693 transitions. [2020-10-14 09:10:01,919 INFO L78 Accepts]: Start accepts. Automaton has 3352 states and 4693 transitions. Word has length 68 [2020-10-14 09:10:01,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:01,922 INFO L479 AbstractCegarLoop]: Abstraction has 3352 states and 4693 transitions. [2020-10-14 09:10:01,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:10:01,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3352 states and 4693 transitions. [2020-10-14 09:10:01,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:10:01,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:01,927 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] [2020-10-14 09:10:01,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:10:01,927 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:01,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:01,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1398108501, now seen corresponding path program 1 times [2020-10-14 09:10:01,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:01,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717098484] [2020-10-14 09:10:01,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:02,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:02,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:02,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:02,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:03,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:04,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:04,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:05,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:05,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:07,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:07,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:10:07,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:10:07,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 09:10:07,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:07,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:07,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:10:07,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:10:07,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 09:10:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:08,583 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:10:08,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:08,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:08,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:08,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:08,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 09:10:08,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:08,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:10:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:10:08,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:08,679 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 09:10:08,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717098484] [2020-10-14 09:10:08,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:08,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:10:08,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120870860] [2020-10-14 09:10:08,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:10:08,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:08,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:10:08,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:10:08,681 INFO L87 Difference]: Start difference. First operand 3352 states and 4693 transitions. Second operand 6 states. [2020-10-14 09:10:10,333 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 622 [2020-10-14 09:10:16,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:16,293 INFO L93 Difference]: Finished difference Result 7217 states and 10302 transitions. [2020-10-14 09:10:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:10:16,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 09:10:16,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:16,313 INFO L225 Difference]: With dead ends: 7217 [2020-10-14 09:10:16,314 INFO L226 Difference]: Without dead ends: 4296 [2020-10-14 09:10:16,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:10:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2020-10-14 09:10:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 4276. [2020-10-14 09:10:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4276 states. [2020-10-14 09:10:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 6064 transitions. [2020-10-14 09:10:16,585 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 6064 transitions. Word has length 68 [2020-10-14 09:10:16,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:16,586 INFO L479 AbstractCegarLoop]: Abstraction has 4276 states and 6064 transitions. [2020-10-14 09:10:16,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:10:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 6064 transitions. [2020-10-14 09:10:16,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:10:16,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:16,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:16,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:10:16,596 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:16,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:16,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1222674505, now seen corresponding path program 1 times [2020-10-14 09:10:16,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:16,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306006688] [2020-10-14 09:10:16,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:16,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:17,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:19,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:20,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:21,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:21,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:10:21,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:10:21,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:10:21,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:21,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:10:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:10:21,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 09:10:21,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:23,364 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:10:23,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:23,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:23,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:23,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:23,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:23,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:10:23,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:23,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:23,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:23,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:23,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:23,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:23,419 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 09:10:23,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306006688] [2020-10-14 09:10:23,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:23,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:10:23,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216769198] [2020-10-14 09:10:23,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:10:23,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:23,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:10:23,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:10:23,422 INFO L87 Difference]: Start difference. First operand 4276 states and 6064 transitions. Second operand 6 states. [2020-10-14 09:10:25,065 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 617 [2020-10-14 09:10:33,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:33,516 INFO L93 Difference]: Finished difference Result 28346 states and 41545 transitions. [2020-10-14 09:10:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:10:33,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 09:10:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:33,618 INFO L225 Difference]: With dead ends: 28346 [2020-10-14 09:10:33,618 INFO L226 Difference]: Without dead ends: 24291 [2020-10-14 09:10:33,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:10:33,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24291 states. [2020-10-14 09:10:34,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24291 to 13409. [2020-10-14 09:10:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13409 states. [2020-10-14 09:10:34,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13409 states to 13409 states and 19380 transitions. [2020-10-14 09:10:34,491 INFO L78 Accepts]: Start accepts. Automaton has 13409 states and 19380 transitions. Word has length 69 [2020-10-14 09:10:34,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:34,491 INFO L479 AbstractCegarLoop]: Abstraction has 13409 states and 19380 transitions. [2020-10-14 09:10:34,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:10:34,492 INFO L276 IsEmpty]: Start isEmpty. Operand 13409 states and 19380 transitions. [2020-10-14 09:10:34,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:10:34,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:34,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:34,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:10:34,500 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:34,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:34,501 INFO L82 PathProgramCache]: Analyzing trace with hash 463688279, now seen corresponding path program 1 times [2020-10-14 09:10:34,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:34,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194312260] [2020-10-14 09:10:34,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:34,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:34,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:35,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:35,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:35,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:35,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:36,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:36,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:37,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:37,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:39,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:39,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:10:39,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:10:39,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-14 09:10:39,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:39,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:10:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:10:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 09:10:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:41,268 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:10:41,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:41,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:41,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:41,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:41,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 09:10:41,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:41,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:41,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:10:41,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:41,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:10:41,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:41,397 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 09:10:41,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194312260] [2020-10-14 09:10:41,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:41,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:10:41,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684017580] [2020-10-14 09:10:41,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:10:41,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:41,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:10:41,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:10:41,400 INFO L87 Difference]: Start difference. First operand 13409 states and 19380 transitions. Second operand 6 states. [2020-10-14 09:10:43,127 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 622 [2020-10-14 09:10:48,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:48,080 INFO L93 Difference]: Finished difference Result 21688 states and 31727 transitions. [2020-10-14 09:10:48,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:10:48,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 09:10:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:48,106 INFO L225 Difference]: With dead ends: 21688 [2020-10-14 09:10:48,106 INFO L226 Difference]: Without dead ends: 10063 [2020-10-14 09:10:48,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:10:48,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10063 states. [2020-10-14 09:10:49,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10063 to 10055. [2020-10-14 09:10:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10055 states. [2020-10-14 09:10:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10055 states to 10055 states and 14513 transitions. [2020-10-14 09:10:49,430 INFO L78 Accepts]: Start accepts. Automaton has 10055 states and 14513 transitions. Word has length 69 [2020-10-14 09:10:49,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:49,430 INFO L479 AbstractCegarLoop]: Abstraction has 10055 states and 14513 transitions. [2020-10-14 09:10:49,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:10:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand 10055 states and 14513 transitions. [2020-10-14 09:10:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:10:49,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:49,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:49,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:10:49,435 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:49,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:49,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1338553, now seen corresponding path program 1 times [2020-10-14 09:10:49,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:49,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486681888] [2020-10-14 09:10:49,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:49,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:49,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:50,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:50,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:50,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:52,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:52,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:54,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:10:54,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:10:54,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:10:54,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:54,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:10:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 09:10:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:10:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:56,047 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:10:56,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:56,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:56,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:56,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:56,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:56,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:10:56,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:56,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:56,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:56,093 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 09:10:56,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486681888] [2020-10-14 09:10:56,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:56,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:10:56,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821588315] [2020-10-14 09:10:56,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:10:56,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:56,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:10:56,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:56,095 INFO L87 Difference]: Start difference. First operand 10055 states and 14513 transitions. Second operand 4 states. [2020-10-14 09:10:57,742 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 620 [2020-10-14 09:11:03,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:03,666 INFO L93 Difference]: Finished difference Result 27096 states and 39359 transitions. [2020-10-14 09:11:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:11:03,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 09:11:03,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:03,701 INFO L225 Difference]: With dead ends: 27096 [2020-10-14 09:11:03,701 INFO L226 Difference]: Without dead ends: 18095 [2020-10-14 09:11:03,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:11:03,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18095 states. [2020-10-14 09:11:04,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18095 to 18015. [2020-10-14 09:11:04,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18015 states. [2020-10-14 09:11:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18015 states to 18015 states and 25898 transitions. [2020-10-14 09:11:04,626 INFO L78 Accepts]: Start accepts. Automaton has 18015 states and 25898 transitions. Word has length 69 [2020-10-14 09:11:04,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:04,626 INFO L479 AbstractCegarLoop]: Abstraction has 18015 states and 25898 transitions. [2020-10-14 09:11:04,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:11:04,627 INFO L276 IsEmpty]: Start isEmpty. Operand 18015 states and 25898 transitions. [2020-10-14 09:11:04,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:11:04,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:04,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:04,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:11:04,635 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:04,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:04,635 INFO L82 PathProgramCache]: Analyzing trace with hash 688519671, now seen corresponding path program 1 times [2020-10-14 09:11:04,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:04,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875020922] [2020-10-14 09:11:04,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:04,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:04,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:04,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:05,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:06,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:07,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:07,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:07,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:08,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:09,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:09,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:11:09,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:11:09,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:11:09,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:09,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:09,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:09,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 09:11:09,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:11:09,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:11,352 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:11:11,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:11,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:11,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:11,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:11:11,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:11,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:11,397 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 09:11:11,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875020922] [2020-10-14 09:11:11,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:11,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:11:11,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620048807] [2020-10-14 09:11:11,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:11:11,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:11,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:11:11,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:11:11,398 INFO L87 Difference]: Start difference. First operand 18015 states and 25898 transitions. Second operand 4 states. [2020-10-14 09:11:13,030 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 620 [2020-10-14 09:11:18,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:18,862 INFO L93 Difference]: Finished difference Result 43508 states and 62889 transitions. [2020-10-14 09:11:18,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:11:18,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-14 09:11:18,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:18,909 INFO L225 Difference]: With dead ends: 43508 [2020-10-14 09:11:18,909 INFO L226 Difference]: Without dead ends: 26773 [2020-10-14 09:11:18,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:11:18,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26773 states. [2020-10-14 09:11:20,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26773 to 26621. [2020-10-14 09:11:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26621 states. [2020-10-14 09:11:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26621 states to 26621 states and 37956 transitions. [2020-10-14 09:11:20,397 INFO L78 Accepts]: Start accepts. Automaton has 26621 states and 37956 transitions. Word has length 70 [2020-10-14 09:11:20,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:20,397 INFO L479 AbstractCegarLoop]: Abstraction has 26621 states and 37956 transitions. [2020-10-14 09:11:20,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:11:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 26621 states and 37956 transitions. [2020-10-14 09:11:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:11:20,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:20,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:20,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:11:20,406 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:20,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1191293935, now seen corresponding path program 1 times [2020-10-14 09:11:20,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:20,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818571101] [2020-10-14 09:11:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:21,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:21,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:22,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:25,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:25,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:11:25,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:11:25,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 09:11:25,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:25,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:25,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 09:11:25,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:11:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:11:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:27,086 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:11:27,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:27,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:27,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:27,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:27,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:27,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:11:27,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:27,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:27,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:27,140 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 09:11:27,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818571101] [2020-10-14 09:11:27,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:27,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 09:11:27,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983209497] [2020-10-14 09:11:27,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 09:11:27,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:27,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 09:11:27,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:11:27,142 INFO L87 Difference]: Start difference. First operand 26621 states and 37956 transitions. Second operand 7 states. [2020-10-14 09:11:28,979 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 626 [2020-10-14 09:11:37,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:37,505 INFO L93 Difference]: Finished difference Result 64259 states and 92394 transitions. [2020-10-14 09:11:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:11:37,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-14 09:11:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:37,569 INFO L225 Difference]: With dead ends: 64259 [2020-10-14 09:11:37,569 INFO L226 Difference]: Without dead ends: 40903 [2020-10-14 09:11:37,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:11:37,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40903 states. [2020-10-14 09:11:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40903 to 25733. [2020-10-14 09:11:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25733 states. [2020-10-14 09:11:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25733 states to 25733 states and 36806 transitions. [2020-10-14 09:11:39,233 INFO L78 Accepts]: Start accepts. Automaton has 25733 states and 36806 transitions. Word has length 71 [2020-10-14 09:11:39,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:39,233 INFO L479 AbstractCegarLoop]: Abstraction has 25733 states and 36806 transitions. [2020-10-14 09:11:39,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 09:11:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 25733 states and 36806 transitions. [2020-10-14 09:11:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:11:39,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:39,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:39,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:11:39,240 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:39,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:39,240 INFO L82 PathProgramCache]: Analyzing trace with hash -598394703, now seen corresponding path program 1 times [2020-10-14 09:11:39,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:39,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063776835] [2020-10-14 09:11:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:39,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:39,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:40,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:40,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:41,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:41,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:44,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:44,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:11:44,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:11:44,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 09:11:44,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:44,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:11:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:11:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 09:11:44,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:45,923 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:11:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:45,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:45,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:45,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:45,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:45,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 09:11:45,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:45,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:45,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:45,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:45,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:11:45,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:46,018 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 09:11:46,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063776835] [2020-10-14 09:11:46,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:46,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:11:46,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283092609] [2020-10-14 09:11:46,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:11:46,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:46,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:11:46,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:11:46,020 INFO L87 Difference]: Start difference. First operand 25733 states and 36806 transitions. Second operand 6 states. [2020-10-14 09:11:47,739 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-14 09:11:53,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:53,539 INFO L93 Difference]: Finished difference Result 42404 states and 61256 transitions. [2020-10-14 09:11:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:11:53,539 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-14 09:11:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:53,565 INFO L225 Difference]: With dead ends: 42404 [2020-10-14 09:11:53,566 INFO L226 Difference]: Without dead ends: 18825 [2020-10-14 09:11:53,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:11:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18825 states. [2020-10-14 09:11:54,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18825 to 18821. [2020-10-14 09:11:54,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18821 states. [2020-10-14 09:11:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18821 states to 18821 states and 26870 transitions. [2020-10-14 09:11:54,532 INFO L78 Accepts]: Start accepts. Automaton has 18821 states and 26870 transitions. Word has length 71 [2020-10-14 09:11:54,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:54,533 INFO L479 AbstractCegarLoop]: Abstraction has 18821 states and 26870 transitions. [2020-10-14 09:11:54,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:11:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 18821 states and 26870 transitions. [2020-10-14 09:11:54,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:11:54,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:54,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:54,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:11:54,536 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:54,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:54,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1757792552, now seen corresponding path program 1 times [2020-10-14 09:11:54,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:54,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037807407] [2020-10-14 09:11:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:54,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:54,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:55,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:55,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:55,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:55,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:59,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:59,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:11:59,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:11:59,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:11:59,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:59,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 09:11:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:11:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:01,142 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:12:01,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:01,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:01,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:01,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:01,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:01,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:12:01,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:01,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:12:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:12:01,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:01,192 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 09:12:01,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037807407] [2020-10-14 09:12:01,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:01,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:12:01,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35912010] [2020-10-14 09:12:01,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:12:01,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:01,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:12:01,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:12:01,194 INFO L87 Difference]: Start difference. First operand 18821 states and 26870 transitions. Second operand 4 states. [2020-10-14 09:12:02,818 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 620 [2020-10-14 09:12:08,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:08,461 INFO L93 Difference]: Finished difference Result 52344 states and 74932 transitions. [2020-10-14 09:12:08,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:12:08,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-14 09:12:08,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:08,502 INFO L225 Difference]: With dead ends: 52344 [2020-10-14 09:12:08,502 INFO L226 Difference]: Without dead ends: 34178 [2020-10-14 09:12:08,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:12:08,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34178 states. [2020-10-14 09:12:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34178 to 33990. [2020-10-14 09:12:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33990 states. [2020-10-14 09:12:10,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33990 states to 33990 states and 48089 transitions. [2020-10-14 09:12:10,553 INFO L78 Accepts]: Start accepts. Automaton has 33990 states and 48089 transitions. Word has length 71 [2020-10-14 09:12:10,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:10,553 INFO L479 AbstractCegarLoop]: Abstraction has 33990 states and 48089 transitions. [2020-10-14 09:12:10,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:12:10,553 INFO L276 IsEmpty]: Start isEmpty. Operand 33990 states and 48089 transitions. [2020-10-14 09:12:10,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 09:12:10,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:10,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:12:10,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:12:10,558 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:10,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:10,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1239734237, now seen corresponding path program 1 times [2020-10-14 09:12:10,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:10,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481005496] [2020-10-14 09:12:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:10,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:11,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:12,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:12,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:14,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:14,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:14,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:15,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:15,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 09:12:15,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:12:15,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:12:15,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:15,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 09:12:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:12:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 09:12:15,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:17,274 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-14 09:12:17,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:17,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:17,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:17,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:17,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 09:12:17,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:17,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:17,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:12:17,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:17,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:12:17,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:17,361 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 09:12:17,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481005496] [2020-10-14 09:12:17,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:17,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 09:12:17,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846628204] [2020-10-14 09:12:17,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 09:12:17,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:17,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 09:12:17,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:12:17,363 INFO L87 Difference]: Start difference. First operand 33990 states and 48089 transitions. Second operand 8 states. [2020-10-14 09:12:19,008 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 621