/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:39:23,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:39:23,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:39:24,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:39:24,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:39:24,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:39:24,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:39:24,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:39:24,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:39:24,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:39:24,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:39:24,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:39:24,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:39:24,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:39:24,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:39:24,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:39:24,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:39:24,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:39:24,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:39:24,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:39:24,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:39:24,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:39:24,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:39:24,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:39:24,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:39:24,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:39:24,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:39:24,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:39:24,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:39:24,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:39:24,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:39:24,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:39:24,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:39:24,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:39:24,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:39:24,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:39:24,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:39:24,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:39:24,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:39:24,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:39:24,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:39:24,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:39:24,091 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:39:24,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:39:24,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:39:24,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:39:24,093 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:39:24,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:39:24,093 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:39:24,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:39:24,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:39:24,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:39:24,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:39:24,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:39:24,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:39:24,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:39:24,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:39:24,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:39:24,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:39:24,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:39:24,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:39:24,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:39:24,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:39:24,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:39:24,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:39:24,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:39:24,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:39:24,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:39:24,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:39:24,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:39:24,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:39:24,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:39:24,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:39:24,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:39:24,413 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:39:24,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:39:24,415 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:39:24,416 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:39:24,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2189401aa/2634367f97d8464da83342a3245d8a90/FLAGddab2eb50 [2020-10-14 09:39:25,170 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:39:25,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:39:25,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2189401aa/2634367f97d8464da83342a3245d8a90/FLAGddab2eb50 [2020-10-14 09:39:25,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2189401aa/2634367f97d8464da83342a3245d8a90 [2020-10-14 09:39:25,361 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:39:25,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:39:25,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:39:25,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:39:25,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:39:25,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:39:25" (1/1) ... [2020-10-14 09:39:25,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4603aae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:25, skipping insertion in model container [2020-10-14 09:39:25,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:39:25" (1/1) ... [2020-10-14 09:39:25,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:39:25,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:39:27,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:39:27,267 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:39:29,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:39:29,041 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:39:29,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:29 WrapperNode [2020-10-14 09:39:29,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:39:29,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:39:29,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:39:29,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:39:29,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:29" (1/1) ... [2020-10-14 09:39:29,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:29" (1/1) ... [2020-10-14 09:39:29,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:29" (1/1) ... [2020-10-14 09:39:29,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:29" (1/1) ... [2020-10-14 09:39:29,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:29" (1/1) ... [2020-10-14 09:39:29,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:29" (1/1) ... [2020-10-14 09:39:29,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:29" (1/1) ... [2020-10-14 09:39:29,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:39:29,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:39:29,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:39:29,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:39:29,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:39:29,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:39:29,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:39:29,358 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:39:29,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:39:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:39:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:39:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:39:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:39:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:39:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:39:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:39:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:39:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:39:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:39:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:39:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:39:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:39:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:39:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:39:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:39:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:39:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:39:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:39:33,638 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:39:33,638 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:39:33,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:39:33 BoogieIcfgContainer [2020-10-14 09:39:33,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:39:33,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:39:33,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:39:33,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:39:33,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:39:25" (1/3) ... [2020-10-14 09:39:33,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbd3af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:39:33, skipping insertion in model container [2020-10-14 09:39:33,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:29" (2/3) ... [2020-10-14 09:39:33,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbd3af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:39:33, skipping insertion in model container [2020-10-14 09:39:33,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:39:33" (3/3) ... [2020-10-14 09:39:33,661 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:39:33,672 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:39:33,681 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-14 09:39:33,699 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-14 09:39:33,732 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:39:33,732 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:39:33,732 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:39:33,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:39:33,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:39:33,733 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:39:33,733 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:39:33,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:39:33,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states. [2020-10-14 09:39:33,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-14 09:39:33,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:33,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:39:33,817 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:33,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:33,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1738290825, now seen corresponding path program 1 times [2020-10-14 09:39:33,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:33,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658668150] [2020-10-14 09:39:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:36,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:38,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:39,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:40,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:41,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:41,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-14 09:39:41,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:39:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5499 [2020-10-14 09:39:41,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:41,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:39:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:39:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-14 09:39:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 09:39:42,969 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-14 09:39:42,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:43,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:43,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:43,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:43,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 09:39:43,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:43,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:43,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:43,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:43,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:39:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:39:43,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658668150] [2020-10-14 09:39:43,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:43,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:39:43,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894945640] [2020-10-14 09:39:43,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:39:43,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:43,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:39:43,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:39:43,794 INFO L87 Difference]: Start difference. First operand 1506 states. Second operand 5 states. [2020-10-14 09:40:00,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:00,462 INFO L93 Difference]: Finished difference Result 4461 states and 8055 transitions. [2020-10-14 09:40:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:40:00,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2020-10-14 09:40:00,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:00,508 INFO L225 Difference]: With dead ends: 4461 [2020-10-14 09:40:00,508 INFO L226 Difference]: Without dead ends: 2962 [2020-10-14 09:40:00,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:40:00,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-10-14 09:40:00,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 2917. [2020-10-14 09:40:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2917 states. [2020-10-14 09:40:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4790 transitions. [2020-10-14 09:40:00,775 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4790 transitions. Word has length 493 [2020-10-14 09:40:00,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:00,782 INFO L479 AbstractCegarLoop]: Abstraction has 2917 states and 4790 transitions. [2020-10-14 09:40:00,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:40:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4790 transitions. [2020-10-14 09:40:00,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-14 09:40:00,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:00,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:00,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:40:00,806 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:00,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:00,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1745979400, now seen corresponding path program 1 times [2020-10-14 09:40:00,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:00,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664884984] [2020-10-14 09:40:00,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:02,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:04,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:04,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:04,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:05,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:05,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:06,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:06,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-14 09:40:06,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:40:06,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-14 09:40:06,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:06,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:06,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:40:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-14 09:40:06,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 09:40:07,467 WARN L193 SmtUtils]: Spent 948.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-14 09:40:07,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:07,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:07,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:07,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:07,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 09:40:07,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:07,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:07,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:40:08,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664884984] [2020-10-14 09:40:08,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:08,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:08,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223482102] [2020-10-14 09:40:08,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:08,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:08,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:08,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:08,614 INFO L87 Difference]: Start difference. First operand 2917 states and 4790 transitions. Second operand 4 states. [2020-10-14 09:40:28,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:28,731 INFO L93 Difference]: Finished difference Result 8441 states and 13816 transitions. [2020-10-14 09:40:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:40:28,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 495 [2020-10-14 09:40:28,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:28,762 INFO L225 Difference]: With dead ends: 8441 [2020-10-14 09:40:28,762 INFO L226 Difference]: Without dead ends: 5753 [2020-10-14 09:40:28,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:28,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2020-10-14 09:40:28,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 5710. [2020-10-14 09:40:28,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5710 states. [2020-10-14 09:40:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 9351 transitions. [2020-10-14 09:40:28,980 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 9351 transitions. Word has length 495 [2020-10-14 09:40:28,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:28,981 INFO L479 AbstractCegarLoop]: Abstraction has 5710 states and 9351 transitions. [2020-10-14 09:40:28,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 9351 transitions. [2020-10-14 09:40:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-14 09:40:29,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:29,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:29,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:40:29,004 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:29,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:29,005 INFO L82 PathProgramCache]: Analyzing trace with hash -2031538529, now seen corresponding path program 1 times [2020-10-14 09:40:29,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:29,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265593507] [2020-10-14 09:40:29,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:29,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:30,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:30,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:31,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:32,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:32,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:32,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:33,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:34,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:34,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:34,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-14 09:40:34,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:40:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-14 09:40:34,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:34,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:34,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 09:40:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 311 [2020-10-14 09:40:34,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:40:35,450 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-14 09:40:35,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:35,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:35,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:35,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:35,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 09:40:35,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:35,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:40:36,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265593507] [2020-10-14 09:40:36,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:36,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:36,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292305047] [2020-10-14 09:40:36,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:36,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:36,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:36,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:36,276 INFO L87 Difference]: Start difference. First operand 5710 states and 9351 transitions. Second operand 4 states. [2020-10-14 09:40:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:55,398 INFO L93 Difference]: Finished difference Result 16658 states and 27211 transitions. [2020-10-14 09:40:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:40:55,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 496 [2020-10-14 09:40:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:55,448 INFO L225 Difference]: With dead ends: 16658 [2020-10-14 09:40:55,451 INFO L226 Difference]: Without dead ends: 11234 [2020-10-14 09:40:55,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11234 states. [2020-10-14 09:40:55,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11234 to 11193. [2020-10-14 09:40:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11193 states. [2020-10-14 09:40:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11193 states to 11193 states and 18262 transitions. [2020-10-14 09:40:55,822 INFO L78 Accepts]: Start accepts. Automaton has 11193 states and 18262 transitions. Word has length 496 [2020-10-14 09:40:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:55,823 INFO L479 AbstractCegarLoop]: Abstraction has 11193 states and 18262 transitions. [2020-10-14 09:40:55,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:55,823 INFO L276 IsEmpty]: Start isEmpty. Operand 11193 states and 18262 transitions. [2020-10-14 09:40:55,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-14 09:40:55,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:55,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:55,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:40:55,862 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:55,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:55,862 INFO L82 PathProgramCache]: Analyzing trace with hash -502663302, now seen corresponding path program 1 times [2020-10-14 09:40:55,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:55,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187956025] [2020-10-14 09:40:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:56,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:57,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:58,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:58,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:58,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:59,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:01,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:01,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-14 09:41:01,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:41:01,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-14 09:41:01,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:01,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 09:41:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:41:01,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:41:02,074 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-14 09:41:02,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:02,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:02,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:02,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:02,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:02,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 09:41:02,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:02,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:02,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:02,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:02,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:02,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:41:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:41:02,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187956025] [2020-10-14 09:41:02,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:02,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:02,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031009016] [2020-10-14 09:41:02,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:02,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:02,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:02,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:02,521 INFO L87 Difference]: Start difference. First operand 11193 states and 18262 transitions. Second operand 4 states. [2020-10-14 09:41:22,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:22,712 INFO L93 Difference]: Finished difference Result 33475 states and 54600 transitions. [2020-10-14 09:41:22,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:41:22,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 496 [2020-10-14 09:41:22,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:22,774 INFO L225 Difference]: With dead ends: 33475 [2020-10-14 09:41:22,774 INFO L226 Difference]: Without dead ends: 22329 [2020-10-14 09:41:22,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:22,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22329 states. [2020-10-14 09:41:23,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22329 to 11243. [2020-10-14 09:41:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11243 states. [2020-10-14 09:41:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11243 states to 11243 states and 18335 transitions. [2020-10-14 09:41:23,277 INFO L78 Accepts]: Start accepts. Automaton has 11243 states and 18335 transitions. Word has length 496 [2020-10-14 09:41:23,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:23,277 INFO L479 AbstractCegarLoop]: Abstraction has 11243 states and 18335 transitions. [2020-10-14 09:41:23,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand 11243 states and 18335 transitions. [2020-10-14 09:41:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-14 09:41:23,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:23,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:23,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:41:23,308 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:23,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:23,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1767348902, now seen corresponding path program 1 times [2020-10-14 09:41:23,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:23,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019928241] [2020-10-14 09:41:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:23,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:24,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:24,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:25,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:25,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:25,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:26,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:26,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:26,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:26,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:26,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:28,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:28,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-14 09:41:28,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:41:28,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 09:41:28,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:28,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:41:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-14 09:41:28,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:41:29,368 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-14 09:41:29,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:29,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:29,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:29,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:29,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:41:29,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:29,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:41:29,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019928241] [2020-10-14 09:41:29,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:29,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:29,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224365509] [2020-10-14 09:41:29,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:29,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:29,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:29,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:29,694 INFO L87 Difference]: Start difference. First operand 11243 states and 18335 transitions. Second operand 4 states. [2020-10-14 09:41:49,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:49,632 INFO L93 Difference]: Finished difference Result 32451 states and 52729 transitions. [2020-10-14 09:41:49,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:41:49,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 497 [2020-10-14 09:41:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:49,666 INFO L225 Difference]: With dead ends: 32451 [2020-10-14 09:41:49,666 INFO L226 Difference]: Without dead ends: 21957 [2020-10-14 09:41:49,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:49,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21957 states. [2020-10-14 09:41:50,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21957 to 21918. [2020-10-14 09:41:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21918 states. [2020-10-14 09:41:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21918 states to 21918 states and 35577 transitions. [2020-10-14 09:41:50,375 INFO L78 Accepts]: Start accepts. Automaton has 21918 states and 35577 transitions. Word has length 497 [2020-10-14 09:41:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:50,375 INFO L479 AbstractCegarLoop]: Abstraction has 21918 states and 35577 transitions. [2020-10-14 09:41:50,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 21918 states and 35577 transitions. [2020-10-14 09:41:50,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-14 09:41:50,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:50,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:50,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:41:50,422 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:50,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:50,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1027075369, now seen corresponding path program 1 times [2020-10-14 09:41:50,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:50,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105173436] [2020-10-14 09:41:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:50,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:50,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:50,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:51,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:52,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:52,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:52,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:54,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:54,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:55,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:55,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-14 09:41:55,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:41:55,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-14 09:41:55,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:55,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:41:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:41:55,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:56,353 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-14 09:41:56,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:56,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:56,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:56,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:56,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:41:56,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:56,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:41:56,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105173436] [2020-10-14 09:41:56,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:56,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:56,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207282085] [2020-10-14 09:41:56,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:56,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:56,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:56,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:56,531 INFO L87 Difference]: Start difference. First operand 21918 states and 35577 transitions. Second operand 4 states. [2020-10-14 09:42:17,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:17,660 INFO L93 Difference]: Finished difference Result 65582 states and 106441 transitions. [2020-10-14 09:42:17,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:42:17,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 497 [2020-10-14 09:42:17,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:17,707 INFO L225 Difference]: With dead ends: 65582 [2020-10-14 09:42:17,707 INFO L226 Difference]: Without dead ends: 43730 [2020-10-14 09:42:17,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:17,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43730 states. [2020-10-14 09:42:18,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43730 to 21998. [2020-10-14 09:42:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21998 states. [2020-10-14 09:42:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21998 states to 21998 states and 35692 transitions. [2020-10-14 09:42:18,688 INFO L78 Accepts]: Start accepts. Automaton has 21998 states and 35692 transitions. Word has length 497 [2020-10-14 09:42:18,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:42:18,688 INFO L479 AbstractCegarLoop]: Abstraction has 21998 states and 35692 transitions. [2020-10-14 09:42:18,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:42:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 21998 states and 35692 transitions. [2020-10-14 09:42:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-14 09:42:18,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:42:18,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:42:18,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:42:18,719 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:42:18,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:42:18,720 INFO L82 PathProgramCache]: Analyzing trace with hash -2100965113, now seen corresponding path program 1 times [2020-10-14 09:42:18,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:42:18,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838069467] [2020-10-14 09:42:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:42:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:19,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:19,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:20,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:20,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:21,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:21,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:21,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:21,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:22,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:22,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:22,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:23,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:23,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-14 09:42:23,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:42:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 09:42:23,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:23,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:42:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:42:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:42:23,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:24,772 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-14 09:42:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:42:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:24,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:24,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:24,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:42:24,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:42:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 09:42:24,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:24,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:42:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:42:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:42:24,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:42:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:42:24,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838069467] [2020-10-14 09:42:24,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:42:24,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:42:24,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998410841] [2020-10-14 09:42:24,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:42:24,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:42:24,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:42:24,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:24,943 INFO L87 Difference]: Start difference. First operand 21998 states and 35692 transitions. Second operand 4 states. [2020-10-14 09:42:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:37,090 INFO L93 Difference]: Finished difference Result 65317 states and 105880 transitions. [2020-10-14 09:42:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:42:37,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 498 [2020-10-14 09:42:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:37,135 INFO L225 Difference]: With dead ends: 65317 [2020-10-14 09:42:37,135 INFO L226 Difference]: Without dead ends: 43413 [2020-10-14 09:42:37,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43413 states. [2020-10-14 09:42:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43413 to 22111. [2020-10-14 09:42:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22111 states. [2020-10-14 09:42:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22111 states to 22111 states and 35847 transitions. [2020-10-14 09:42:37,949 INFO L78 Accepts]: Start accepts. Automaton has 22111 states and 35847 transitions. Word has length 498 [2020-10-14 09:42:37,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:42:37,949 INFO L479 AbstractCegarLoop]: Abstraction has 22111 states and 35847 transitions. [2020-10-14 09:42:37,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:42:37,950 INFO L276 IsEmpty]: Start isEmpty. Operand 22111 states and 35847 transitions. [2020-10-14 09:42:37,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-14 09:42:37,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:42:37,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:42:37,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:42:37,967 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:42:37,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:42:37,968 INFO L82 PathProgramCache]: Analyzing trace with hash 791346258, now seen corresponding path program 1 times [2020-10-14 09:42:37,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:42:37,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104165610] [2020-10-14 09:42:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:42:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:38,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:38,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:39,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:39,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:40,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:40,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:40,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:40,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:40,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:41,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:41,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:43,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:43,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-14 09:42:43,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:42:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 09:42:43,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:43,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:42:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-10-14 09:42:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 09:42:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:42:44,158 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-14 09:42:44,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:42:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:44,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:44,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:42:44,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:42:44,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:42:44,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:44,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:44,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:42:44,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:42:44,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:42:44,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:42:44,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104165610] [2020-10-14 09:42:44,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:42:44,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:42:44,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223043910] [2020-10-14 09:42:44,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:42:44,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:42:44,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:42:44,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:44,323 INFO L87 Difference]: Start difference. First operand 22111 states and 35847 transitions. Second operand 4 states. [2020-10-14 09:42:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:59,173 INFO L93 Difference]: Finished difference Result 43109 states and 69016 transitions. [2020-10-14 09:42:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:42:59,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 499 [2020-10-14 09:42:59,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:59,203 INFO L225 Difference]: With dead ends: 43109 [2020-10-14 09:42:59,203 INFO L226 Difference]: Without dead ends: 29473 [2020-10-14 09:42:59,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:59,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29473 states. [2020-10-14 09:43:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29473 to 25279. [2020-10-14 09:43:00,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25279 states. [2020-10-14 09:43:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25279 states to 25279 states and 41063 transitions. [2020-10-14 09:43:00,055 INFO L78 Accepts]: Start accepts. Automaton has 25279 states and 41063 transitions. Word has length 499 [2020-10-14 09:43:00,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:43:00,056 INFO L479 AbstractCegarLoop]: Abstraction has 25279 states and 41063 transitions. [2020-10-14 09:43:00,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:43:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 25279 states and 41063 transitions. [2020-10-14 09:43:00,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-14 09:43:00,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:43:00,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:43:00,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:43:00,076 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:43:00,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:43:00,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1377693835, now seen corresponding path program 1 times [2020-10-14 09:43:00,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:43:00,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636295505] [2020-10-14 09:43:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:43:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:43:00,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:00,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:01,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:01,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:02,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:02,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:02,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:03,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:03,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:03,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking...