/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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:25:18,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:25:18,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:25:18,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:25:18,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:25:18,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:25:18,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:25:18,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:25:18,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:25:18,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:25:18,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:25:18,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:25:18,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:25:18,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:25:18,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:25:18,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:25:18,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:25:18,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:25:18,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:25:18,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:25:18,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:25:18,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:25:18,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:25:18,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:25:18,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:25:18,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:25:18,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:25:18,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:25:18,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:25:18,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:25:18,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:25:18,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:25:18,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:25:18,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:25:18,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:25:18,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:25:18,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:25:18,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:25:18,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:25:18,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:25:18,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:25:18,232 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 08:25:18,278 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:25:18,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:25:18,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:25:18,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:25:18,280 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:25:18,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:25:18,281 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:25:18,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:25:18,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:25:18,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:25:18,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:25:18,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:25:18,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:25:18,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:25:18,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:25:18,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:25:18,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:25:18,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:25:18,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:25:18,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:25:18,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:25:18,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:25:18,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:25:18,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:25:18,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:25:18,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:25:18,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:25:18,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:25:18,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:25:18,287 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 08:25:18,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:25:18,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:25:18,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:25:18,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:25:18,631 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:25:18,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 08:25:18,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9624b497/b1ac6ef82f14432895f0b9f304eec3d3/FLAG43ca53a5b [2020-10-14 08:25:19,323 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:25:19,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 08:25:19,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9624b497/b1ac6ef82f14432895f0b9f304eec3d3/FLAG43ca53a5b [2020-10-14 08:25:19,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9624b497/b1ac6ef82f14432895f0b9f304eec3d3 [2020-10-14 08:25:19,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:25:19,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:25:19,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:25:19,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:25:19,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:25:19,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:25:19" (1/1) ... [2020-10-14 08:25:19,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2330acf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:19, skipping insertion in model container [2020-10-14 08:25:19,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:25:19" (1/1) ... [2020-10-14 08:25:19,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:25:19,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:25:20,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:25:20,968 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:25:21,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:25:21,838 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:25:21,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:21 WrapperNode [2020-10-14 08:25:21,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:25:21,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:25:21,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:25:21,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:25:21,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:21" (1/1) ... [2020-10-14 08:25:21,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:21" (1/1) ... [2020-10-14 08:25:21,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:21" (1/1) ... [2020-10-14 08:25:21,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:21" (1/1) ... [2020-10-14 08:25:22,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:21" (1/1) ... [2020-10-14 08:25:22,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:21" (1/1) ... [2020-10-14 08:25:22,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:21" (1/1) ... [2020-10-14 08:25:22,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:25:22,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:25:22,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:25:22,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:25:22,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:21" (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 08:25:22,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:25:22,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:25:22,238 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:25:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:25:22,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:25:22,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:25:22,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:25:22,240 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:25:22,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:25:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:25:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:25:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:25:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:25:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:25:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:25:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:25:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:25:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:25:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:25:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:25:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:25:24,901 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:25:24,901 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:25:24,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:25:24 BoogieIcfgContainer [2020-10-14 08:25:24,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:25:24,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:25:24,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:25:24,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:25:24,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:25:19" (1/3) ... [2020-10-14 08:25:24,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb12ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:25:24, skipping insertion in model container [2020-10-14 08:25:24,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:21" (2/3) ... [2020-10-14 08:25:24,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb12ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:25:24, skipping insertion in model container [2020-10-14 08:25:24,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:25:24" (3/3) ... [2020-10-14 08:25:24,930 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 08:25:24,957 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:25:24,975 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-14 08:25:25,010 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-14 08:25:25,059 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:25:25,059 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:25:25,060 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:25:25,060 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:25:25,060 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:25:25,060 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:25:25,060 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:25:25,060 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:25:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states. [2020-10-14 08:25:25,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-14 08:25:25,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:25,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:25:25,183 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:25,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:25,189 INFO L82 PathProgramCache]: Analyzing trace with hash 525437657, now seen corresponding path program 1 times [2020-10-14 08:25:25,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:25,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114914601] [2020-10-14 08:25:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:26,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:27,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:28,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:28,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:30,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:31,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 08:25:31,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:25:31,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 08:25:31,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:31,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:31,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:25:31,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 08:25:31,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-14 08:25:31,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:25:31,852 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:25:31,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:31,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:31,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 08:25:31,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:31,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:32,161 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 08:25:32,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114914601] [2020-10-14 08:25:32,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:32,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:25:32,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816910425] [2020-10-14 08:25:32,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:25:32,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:32,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:25:32,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:32,190 INFO L87 Difference]: Start difference. First operand 898 states. Second operand 4 states. [2020-10-14 08:25:32,817 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2020-10-14 08:25:39,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:39,605 INFO L93 Difference]: Finished difference Result 1593 states and 2853 transitions. [2020-10-14 08:25:39,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:39,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 290 [2020-10-14 08:25:39,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:39,639 INFO L225 Difference]: With dead ends: 1593 [2020-10-14 08:25:39,639 INFO L226 Difference]: Without dead ends: 1390 [2020-10-14 08:25:39,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:39,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2020-10-14 08:25:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1388. [2020-10-14 08:25:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1388 states. [2020-10-14 08:25:39,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 2149 transitions. [2020-10-14 08:25:39,804 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 2149 transitions. Word has length 290 [2020-10-14 08:25:39,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:39,806 INFO L479 AbstractCegarLoop]: Abstraction has 1388 states and 2149 transitions. [2020-10-14 08:25:39,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:25:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 2149 transitions. [2020-10-14 08:25:39,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-14 08:25:39,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:39,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:25:39,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:25:39,816 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:39,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:39,817 INFO L82 PathProgramCache]: Analyzing trace with hash 525099033, now seen corresponding path program 1 times [2020-10-14 08:25:39,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:39,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833675157] [2020-10-14 08:25:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:40,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:41,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:42,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:42,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:42,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:43,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:44,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:44,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:45,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 08:25:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:25:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 08:25:45,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:45,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:25:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 08:25:45,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:46,175 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:25:46,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:46,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:46,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:46,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 08:25:46,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:46,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:46,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:25:46,591 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 08:25:46,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833675157] [2020-10-14 08:25:46,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:46,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:46,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894942546] [2020-10-14 08:25:46,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:46,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:46,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:46,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:46,596 INFO L87 Difference]: Start difference. First operand 1388 states and 2149 transitions. Second operand 5 states. [2020-10-14 08:25:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:56,192 INFO L93 Difference]: Finished difference Result 4096 states and 6338 transitions. [2020-10-14 08:25:56,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:56,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2020-10-14 08:25:56,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:56,222 INFO L225 Difference]: With dead ends: 4096 [2020-10-14 08:25:56,222 INFO L226 Difference]: Without dead ends: 2721 [2020-10-14 08:25:56,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2020-10-14 08:25:56,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2585. [2020-10-14 08:25:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2585 states. [2020-10-14 08:25:56,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3996 transitions. [2020-10-14 08:25:56,448 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3996 transitions. Word has length 290 [2020-10-14 08:25:56,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:56,449 INFO L479 AbstractCegarLoop]: Abstraction has 2585 states and 3996 transitions. [2020-10-14 08:25:56,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:56,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3996 transitions. [2020-10-14 08:25:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-14 08:25:56,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:56,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:56,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:25:56,467 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:56,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1223279980, now seen corresponding path program 1 times [2020-10-14 08:25:56,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:56,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873840270] [2020-10-14 08:25:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:56,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:57,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:57,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:57,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:57,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:58,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:58,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:58,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:58,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:01,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:01,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-14 08:26:01,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:26:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 08:26:01,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:01,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:26:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 08:26:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:26:02,296 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:26:02,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:02,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:02,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:02,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:02,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:02,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:26:02,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:02,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:02,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:26:02,493 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 08:26:02,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873840270] [2020-10-14 08:26:02,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:02,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:26:02,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674356865] [2020-10-14 08:26:02,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:26:02,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:02,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:26:02,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:02,503 INFO L87 Difference]: Start difference. First operand 2585 states and 3996 transitions. Second operand 4 states. [2020-10-14 08:26:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:11,984 INFO L93 Difference]: Finished difference Result 7509 states and 11567 transitions. [2020-10-14 08:26:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:26:11,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 292 [2020-10-14 08:26:11,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:12,011 INFO L225 Difference]: With dead ends: 7509 [2020-10-14 08:26:12,011 INFO L226 Difference]: Without dead ends: 5064 [2020-10-14 08:26:12,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:12,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2020-10-14 08:26:12,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 4932. [2020-10-14 08:26:12,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4932 states. [2020-10-14 08:26:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 7597 transitions. [2020-10-14 08:26:12,210 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 7597 transitions. Word has length 292 [2020-10-14 08:26:12,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:12,222 INFO L479 AbstractCegarLoop]: Abstraction has 4932 states and 7597 transitions. [2020-10-14 08:26:12,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:26:12,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 7597 transitions. [2020-10-14 08:26:12,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-14 08:26:12,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:12,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:26:12,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:26:12,236 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:12,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:12,236 INFO L82 PathProgramCache]: Analyzing trace with hash 791831705, now seen corresponding path program 1 times [2020-10-14 08:26:12,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:12,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022868415] [2020-10-14 08:26:12,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:12,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:12,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:12,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:13,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:13,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:13,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:13,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:14,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:14,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:14,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:17,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:17,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-14 08:26:17,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:26:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 08:26:17,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:17,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:26:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:26:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:26:17,982 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:26:17,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:17,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:18,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:18,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:18,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:18,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 08:26:18,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:18,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:18,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:18,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:18,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:18,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:18,131 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 08:26:18,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022868415] [2020-10-14 08:26:18,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:18,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:26:18,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780860058] [2020-10-14 08:26:18,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:26:18,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:18,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:26:18,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:18,134 INFO L87 Difference]: Start difference. First operand 4932 states and 7597 transitions. Second operand 4 states. [2020-10-14 08:26:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:23,387 INFO L93 Difference]: Finished difference Result 14637 states and 22515 transitions. [2020-10-14 08:26:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:26:23,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 292 [2020-10-14 08:26:23,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:23,431 INFO L225 Difference]: With dead ends: 14637 [2020-10-14 08:26:23,431 INFO L226 Difference]: Without dead ends: 9732 [2020-10-14 08:26:23,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:23,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9732 states. [2020-10-14 08:26:23,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9732 to 4943. [2020-10-14 08:26:23,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4943 states. [2020-10-14 08:26:23,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7612 transitions. [2020-10-14 08:26:23,672 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7612 transitions. Word has length 292 [2020-10-14 08:26:23,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:23,672 INFO L479 AbstractCegarLoop]: Abstraction has 4943 states and 7612 transitions. [2020-10-14 08:26:23,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:26:23,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7612 transitions. [2020-10-14 08:26:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-14 08:26:23,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:23,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:26:23,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:26:23,686 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:23,686 INFO L82 PathProgramCache]: Analyzing trace with hash 741400408, now seen corresponding path program 1 times [2020-10-14 08:26:23,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:23,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230035339] [2020-10-14 08:26:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:23,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:23,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:24,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:24,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:24,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:25,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:25,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:25,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:25,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:25,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:26,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:26,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:28,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:28,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 08:26:28,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:26:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 08:26:28,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:28,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 08:26:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:26:28,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:26:29,329 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:26:29,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:29,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:29,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:29,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:29,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:29,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:26:29,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:29,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:29,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:26:29,430 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 08:26:29,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230035339] [2020-10-14 08:26:29,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:29,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:26:29,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470084513] [2020-10-14 08:26:29,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:26:29,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:29,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:26:29,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:29,433 INFO L87 Difference]: Start difference. First operand 4943 states and 7612 transitions. Second operand 4 states. [2020-10-14 08:26:38,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:38,985 INFO L93 Difference]: Finished difference Result 14734 states and 22682 transitions. [2020-10-14 08:26:38,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:26:38,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 293 [2020-10-14 08:26:38,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:39,025 INFO L225 Difference]: With dead ends: 14734 [2020-10-14 08:26:39,026 INFO L226 Difference]: Without dead ends: 9841 [2020-10-14 08:26:39,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:39,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9841 states. [2020-10-14 08:26:39,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9841 to 4959. [2020-10-14 08:26:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4959 states. [2020-10-14 08:26:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 7631 transitions. [2020-10-14 08:26:39,286 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 7631 transitions. Word has length 293 [2020-10-14 08:26:39,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:39,287 INFO L479 AbstractCegarLoop]: Abstraction has 4959 states and 7631 transitions. [2020-10-14 08:26:39,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:26:39,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 7631 transitions. [2020-10-14 08:26:39,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-14 08:26:39,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:39,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:26:39,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:26:39,299 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:39,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:39,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1330631697, now seen corresponding path program 1 times [2020-10-14 08:26:39,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:39,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267345294] [2020-10-14 08:26:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:39,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:39,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:39,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:40,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:40,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:40,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:40,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:40,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:41,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:41,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:44,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:44,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-14 08:26:44,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:26:44,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 08:26:44,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:44,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:26:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 08:26:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:44,959 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:26:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:44,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:44,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:44,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:44,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:26:44,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:44,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:44,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:45,063 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 08:26:45,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267345294] [2020-10-14 08:26:45,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:45,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:26:45,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732551776] [2020-10-14 08:26:45,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:26:45,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:45,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:26:45,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:45,066 INFO L87 Difference]: Start difference. First operand 4959 states and 7631 transitions. Second operand 4 states. [2020-10-14 08:26:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:54,570 INFO L93 Difference]: Finished difference Result 14442 states and 22174 transitions. [2020-10-14 08:26:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:26:54,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 294 [2020-10-14 08:26:54,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:54,593 INFO L225 Difference]: With dead ends: 14442 [2020-10-14 08:26:54,593 INFO L226 Difference]: Without dead ends: 9680 [2020-10-14 08:26:54,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:54,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9680 states. [2020-10-14 08:26:55,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9680 to 9552. [2020-10-14 08:26:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9552 states. [2020-10-14 08:26:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9552 states to 9552 states and 14623 transitions. [2020-10-14 08:26:55,092 INFO L78 Accepts]: Start accepts. Automaton has 9552 states and 14623 transitions. Word has length 294 [2020-10-14 08:26:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:55,093 INFO L479 AbstractCegarLoop]: Abstraction has 9552 states and 14623 transitions. [2020-10-14 08:26:55,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:26:55,093 INFO L276 IsEmpty]: Start isEmpty. Operand 9552 states and 14623 transitions. [2020-10-14 08:26:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-14 08:26:55,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:55,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:55,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:26:55,109 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:55,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:55,109 INFO L82 PathProgramCache]: Analyzing trace with hash 987137356, now seen corresponding path program 1 times [2020-10-14 08:26:55,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:55,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540579198] [2020-10-14 08:26:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:55,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:55,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:55,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:55,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:56,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:56,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:56,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:56,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:56,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:57,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:57,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:57,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:57,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:00,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:00,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-14 08:27:00,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 08:27:00,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 08:27:00,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:00,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:27:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:27:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 08:27:00,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:00,972 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:27:00,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:00,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:00,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:00,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:00,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:00,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:27:00,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:00,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:01,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:01,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:27:01,146 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 08:27:01,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540579198] [2020-10-14 08:27:01,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:01,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:27:01,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139158610] [2020-10-14 08:27:01,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:27:01,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:01,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:27:01,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:27:01,149 INFO L87 Difference]: Start difference. First operand 9552 states and 14623 transitions. Second operand 5 states. [2020-10-14 08:27:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:11,432 INFO L93 Difference]: Finished difference Result 27825 states and 42470 transitions. [2020-10-14 08:27:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:27:11,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2020-10-14 08:27:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:11,478 INFO L225 Difference]: With dead ends: 27825 [2020-10-14 08:27:11,479 INFO L226 Difference]: Without dead ends: 18547 [2020-10-14 08:27:11,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:27:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18547 states. [2020-10-14 08:27:12,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18547 to 18361. [2020-10-14 08:27:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18361 states. [2020-10-14 08:27:12,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18361 states to 18361 states and 27902 transitions. [2020-10-14 08:27:12,512 INFO L78 Accepts]: Start accepts. Automaton has 18361 states and 27902 transitions. Word has length 294 [2020-10-14 08:27:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:12,512 INFO L479 AbstractCegarLoop]: Abstraction has 18361 states and 27902 transitions. [2020-10-14 08:27:12,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:27:12,512 INFO L276 IsEmpty]: Start isEmpty. Operand 18361 states and 27902 transitions. [2020-10-14 08:27:12,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 08:27:12,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:12,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:27:12,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:27:12,538 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:12,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:12,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1000606423, now seen corresponding path program 1 times [2020-10-14 08:27:12,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:12,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173246066] [2020-10-14 08:27:12,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:12,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:12,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:12,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:13,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:13,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:13,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:13,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:13,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:13,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:13,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:13,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:14,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:14,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:17,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:17,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-14 08:27:17,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:27:17,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 08:27:17,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:17,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:17,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:27:17,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 08:27:17,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 08:27:17,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:27:18,377 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:27:18,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:18,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:18,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:18,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:18,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:18,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:27:18,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:18,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:18,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:18,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:18,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:18,481 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 08:27:18,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173246066] [2020-10-14 08:27:18,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:18,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:27:18,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770298035] [2020-10-14 08:27:18,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:27:18,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:18,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:27:18,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:27:18,484 INFO L87 Difference]: Start difference. First operand 18361 states and 27902 transitions. Second operand 4 states. [2020-10-14 08:27:29,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:29,615 INFO L93 Difference]: Finished difference Result 54045 states and 81983 transitions. [2020-10-14 08:27:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:27:29,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 296 [2020-10-14 08:27:29,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:29,677 INFO L225 Difference]: With dead ends: 54045 [2020-10-14 08:27:29,677 INFO L226 Difference]: Without dead ends: 36099 [2020-10-14 08:27:29,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:27:29,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36099 states. [2020-10-14 08:27:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36099 to 35913. [2020-10-14 08:27:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35913 states. [2020-10-14 08:27:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35913 states to 35913 states and 54245 transitions. [2020-10-14 08:27:32,371 INFO L78 Accepts]: Start accepts. Automaton has 35913 states and 54245 transitions. Word has length 296 [2020-10-14 08:27:32,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:32,372 INFO L479 AbstractCegarLoop]: Abstraction has 35913 states and 54245 transitions. [2020-10-14 08:27:32,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:27:32,372 INFO L276 IsEmpty]: Start isEmpty. Operand 35913 states and 54245 transitions. [2020-10-14 08:27:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 08:27:32,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:32,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:27:32,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:27:32,412 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:32,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1757412454, now seen corresponding path program 1 times [2020-10-14 08:27:32,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:32,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983993415] [2020-10-14 08:27:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:32,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:33,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:33,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:33,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:33,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:33,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:34,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:34,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:34,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:34,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:35,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:37,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:37,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-14 08:27:37,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:27:37,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 08:27:37,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:37,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:37,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:27:37,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:27:37,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 08:27:37,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:38,364 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:27:38,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:38,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:38,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:38,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:38,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:27:38,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:38,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:38,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:38,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:38,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:38,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:38,648 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 08:27:38,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983993415] [2020-10-14 08:27:38,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:38,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:27:38,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078802172] [2020-10-14 08:27:38,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:27:38,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:38,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:27:38,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:27:38,651 INFO L87 Difference]: Start difference. First operand 35913 states and 54245 transitions. Second operand 5 states. [2020-10-14 08:27:50,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:50,324 INFO L93 Difference]: Finished difference Result 105975 states and 159851 transitions. [2020-10-14 08:27:50,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:27:50,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 296 [2020-10-14 08:27:50,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:50,439 INFO L225 Difference]: With dead ends: 105975 [2020-10-14 08:27:50,439 INFO L226 Difference]: Without dead ends: 70389 [2020-10-14 08:27:50,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:27:50,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70389 states. [2020-10-14 08:27:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70389 to 70203. [2020-10-14 08:27:53,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70203 states. [2020-10-14 08:27:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70203 states to 70203 states and 105297 transitions. [2020-10-14 08:27:53,635 INFO L78 Accepts]: Start accepts. Automaton has 70203 states and 105297 transitions. Word has length 296 [2020-10-14 08:27:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:53,635 INFO L479 AbstractCegarLoop]: Abstraction has 70203 states and 105297 transitions. [2020-10-14 08:27:53,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:27:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 70203 states and 105297 transitions. [2020-10-14 08:27:53,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 08:27:53,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:53,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:27:53,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:27:53,692 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:53,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:53,693 INFO L82 PathProgramCache]: Analyzing trace with hash 54579279, now seen corresponding path program 1 times [2020-10-14 08:27:53,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:53,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983257984] [2020-10-14 08:27:53,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:53,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:53,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:54,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:54,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:56,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:56,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:58,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:58,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 08:27:58,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 08:27:58,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 08:27:58,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:58,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:27:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:27:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 08:27:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:27:59,389 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:27:59,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:59,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:59,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:59,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:59,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:27:59,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:59,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:59,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:59,498 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 08:27:59,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983257984] [2020-10-14 08:27:59,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:59,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:27:59,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726443836] [2020-10-14 08:27:59,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:27:59,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:59,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:27:59,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:27:59,501 INFO L87 Difference]: Start difference. First operand 70203 states and 105297 transitions. Second operand 4 states. [2020-10-14 08:28:15,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:15,936 INFO L93 Difference]: Finished difference Result 206205 states and 308615 transitions. [2020-10-14 08:28:15,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:28:15,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 298 [2020-10-14 08:28:15,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:16,150 INFO L225 Difference]: With dead ends: 206205 [2020-10-14 08:28:16,151 INFO L226 Difference]: Without dead ends: 137859 [2020-10-14 08:28:16,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:16,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137859 states. [2020-10-14 08:28:24,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137859 to 137673. [2020-10-14 08:28:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137673 states. [2020-10-14 08:28:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137673 states to 137673 states and 205183 transitions. [2020-10-14 08:28:24,987 INFO L78 Accepts]: Start accepts. Automaton has 137673 states and 205183 transitions. Word has length 298 [2020-10-14 08:28:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:24,987 INFO L479 AbstractCegarLoop]: Abstraction has 137673 states and 205183 transitions. [2020-10-14 08:28:24,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:28:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 137673 states and 205183 transitions. [2020-10-14 08:28:25,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 08:28:25,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:25,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:28:25,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:28:25,116 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:25,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1356544812, now seen corresponding path program 1 times [2020-10-14 08:28:25,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:25,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062498450] [2020-10-14 08:28:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:25,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:25,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:25,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:25,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:26,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:26,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:26,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:26,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:26,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:26,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:26,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:28,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:28,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:28,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:28,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:31,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:31,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 08:28:31,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 08:28:31,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6292 [2020-10-14 08:28:31,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:31,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:31,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:28:31,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:28:31,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:28:31,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:32,067 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:28:32,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:32,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:32,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:32,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:32,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:32,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:28:32,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:32,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:32,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:32,136 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 08:28:32,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062498450] [2020-10-14 08:28:32,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:32,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:28:32,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947282530] [2020-10-14 08:28:32,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:28:32,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:32,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:28:32,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:32,138 INFO L87 Difference]: Start difference. First operand 137673 states and 205183 transitions. Second operand 4 states. [2020-10-14 08:28:56,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:56,156 INFO L93 Difference]: Finished difference Result 411045 states and 612199 transitions. [2020-10-14 08:28:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:28:56,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 298 [2020-10-14 08:28:56,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:56,482 INFO L225 Difference]: With dead ends: 411045 [2020-10-14 08:28:56,482 INFO L226 Difference]: Without dead ends: 274469 [2020-10-14 08:28:56,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274469 states.