/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=BIGGEST --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/systemc/mem_slave_tlm.1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 21:00:36,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 21:00:36,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 21:00:36,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 21:00:36,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 21:00:36,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 21:00:36,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 21:00:36,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 21:00:36,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 21:00:36,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 21:00:36,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 21:00:36,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 21:00:36,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 21:00:36,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 21:00:36,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 21:00:36,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 21:00:36,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 21:00:36,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 21:00:36,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 21:00:36,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 21:00:36,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 21:00:36,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 21:00:36,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 21:00:36,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 21:00:36,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 21:00:36,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 21:00:36,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 21:00:36,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 21:00:36,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 21:00:36,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 21:00:36,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 21:00:36,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 21:00:36,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 21:00:36,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 21:00:36,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 21:00:36,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 21:00:37,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 21:00:37,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 21:00:37,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 21:00:37,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 21:00:37,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 21:00:37,003 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 [2020-10-12 21:00:37,024 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 21:00:37,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 21:00:37,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 21:00:37,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 21:00:37,026 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 21:00:37,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 21:00:37,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 21:00:37,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 21:00:37,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 21:00:37,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 21:00:37,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 21:00:37,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 21:00:37,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 21:00:37,027 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 21:00:37,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 21:00:37,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 21:00:37,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 21:00:37,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 21:00:37,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 21:00:37,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 21:00:37,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 21:00:37,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 21:00:37,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 21:00:37,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 21:00:37,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 21:00:37,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 21:00:37,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 21:00:37,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 21:00:37,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 21:00:37,031 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 21:00:37,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 21:00:37,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 21:00:37,367 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 21:00:37,369 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 21:00:37,369 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 21:00:37,370 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.1.cil.c [2020-10-12 21:00:37,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5225f3f69/08530486d69045c09dcfc4ffe7c3ad39/FLAGaf0ea4b35 [2020-10-12 21:00:37,968 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 21:00:37,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.1.cil.c [2020-10-12 21:00:37,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5225f3f69/08530486d69045c09dcfc4ffe7c3ad39/FLAGaf0ea4b35 [2020-10-12 21:00:38,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5225f3f69/08530486d69045c09dcfc4ffe7c3ad39 [2020-10-12 21:00:38,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 21:00:38,259 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 21:00:38,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 21:00:38,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 21:00:38,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 21:00:38,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:00:38" (1/1) ... [2020-10-12 21:00:38,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129c6bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:38, skipping insertion in model container [2020-10-12 21:00:38,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:00:38" (1/1) ... [2020-10-12 21:00:38,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 21:00:38,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 21:00:38,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:00:38,645 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 21:00:38,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:00:38,848 INFO L208 MainTranslator]: Completed translation [2020-10-12 21:00:38,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:38 WrapperNode [2020-10-12 21:00:38,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 21:00:38,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 21:00:38,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 21:00:38,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 21:00:38,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:38" (1/1) ... [2020-10-12 21:00:38,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:38" (1/1) ... [2020-10-12 21:00:38,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:38" (1/1) ... [2020-10-12 21:00:38,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:38" (1/1) ... [2020-10-12 21:00:38,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:38" (1/1) ... [2020-10-12 21:00:38,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:38" (1/1) ... [2020-10-12 21:00:38,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:38" (1/1) ... [2020-10-12 21:00:38,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 21:00:38,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 21:00:38,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 21:00:38,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 21:00:38,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:38" (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 [2020-10-12 21:00:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 21:00:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 21:00:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-12 21:00:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-12 21:00:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-12 21:00:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-12 21:00:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-12 21:00:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-12 21:00:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-12 21:00:39,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 21:00:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 21:00:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 21:00:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-12 21:00:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-12 21:00:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-12 21:00:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-12 21:00:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-12 21:00:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-12 21:00:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-12 21:00:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 21:00:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 21:00:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 21:00:40,194 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 21:00:40,196 INFO L295 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-12 21:00:40,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:00:40 BoogieIcfgContainer [2020-10-12 21:00:40,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 21:00:40,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 21:00:40,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 21:00:40,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 21:00:40,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:00:38" (1/3) ... [2020-10-12 21:00:40,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cda3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:00:40, skipping insertion in model container [2020-10-12 21:00:40,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:38" (2/3) ... [2020-10-12 21:00:40,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cda3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:00:40, skipping insertion in model container [2020-10-12 21:00:40,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:00:40" (3/3) ... [2020-10-12 21:00:40,219 INFO L109 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.1.cil.c [2020-10-12 21:00:40,230 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 21:00:40,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 21:00:40,259 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 21:00:40,296 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 21:00:40,296 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 21:00:40,296 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 21:00:40,296 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 21:00:40,297 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 21:00:40,297 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 21:00:40,297 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 21:00:40,297 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 21:00:40,332 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-12 21:00:40,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 21:00:40,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:40,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:40,357 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:40,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1545125351, now seen corresponding path program 1 times [2020-10-12 21:00:40,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:40,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070643745] [2020-10-12 21:00:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:40,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:40,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:41,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:41,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:41,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:41,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:41,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:43,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:44,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:44,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:45,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:45,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 21:00:45,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 21:00:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 21:00:45,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:00:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:00:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 21:00:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 21:00:45,992 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-12 21:00:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:46,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:46,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:46,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:46,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:46,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 21:00:46,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:00:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:00:46,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070643745] [2020-10-12 21:00:46,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:46,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 21:00:46,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915164183] [2020-10-12 21:00:46,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 21:00:46,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:46,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 21:00:46,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 21:00:46,113 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 4 states. [2020-10-12 21:00:46,329 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:00:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:48,237 INFO L93 Difference]: Finished difference Result 873 states and 1555 transitions. [2020-10-12 21:00:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:48,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-12 21:00:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:48,258 INFO L225 Difference]: With dead ends: 873 [2020-10-12 21:00:48,259 INFO L226 Difference]: Without dead ends: 572 [2020-10-12 21:00:48,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:48,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-12 21:00:48,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 498. [2020-10-12 21:00:48,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-10-12 21:00:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 763 transitions. [2020-10-12 21:00:48,403 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 763 transitions. Word has length 39 [2020-10-12 21:00:48,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:48,403 INFO L479 AbstractCegarLoop]: Abstraction has 498 states and 763 transitions. [2020-10-12 21:00:48,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 21:00:48,404 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 763 transitions. [2020-10-12 21:00:48,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 21:00:48,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:48,408 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] [2020-10-12 21:00:48,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 21:00:48,409 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:48,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:48,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1247138858, now seen corresponding path program 1 times [2020-10-12 21:00:48,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:48,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738496926] [2020-10-12 21:00:48,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:48,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:48,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:48,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:49,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:50,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:50,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 21:00:50,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:50,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2177 [2020-10-12 21:00:50,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:50,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 21:00:50,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:00:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 21:00:50,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 21:00:50,819 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-12 21:00:50,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:50,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:50,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:50,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:50,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 21:00:50,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:50,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 21:00:50,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:00:50,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738496926] [2020-10-12 21:00:50,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:50,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:00:50,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305252012] [2020-10-12 21:00:50,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:00:50,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:50,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:00:50,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:00:50,856 INFO L87 Difference]: Start difference. First operand 498 states and 763 transitions. Second operand 7 states. [2020-10-12 21:00:50,989 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:00:51,719 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:00:51,868 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:00:53,194 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:00:53,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:53,316 INFO L93 Difference]: Finished difference Result 1003 states and 1518 transitions. [2020-10-12 21:00:53,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:00:53,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-10-12 21:00:53,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:53,327 INFO L225 Difference]: With dead ends: 1003 [2020-10-12 21:00:53,328 INFO L226 Difference]: Without dead ends: 1000 [2020-10-12 21:00:53,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-12 21:00:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2020-10-12 21:00:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 860. [2020-10-12 21:00:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2020-10-12 21:00:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1333 transitions. [2020-10-12 21:00:53,440 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1333 transitions. Word has length 49 [2020-10-12 21:00:53,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:53,441 INFO L479 AbstractCegarLoop]: Abstraction has 860 states and 1333 transitions. [2020-10-12 21:00:53,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:00:53,441 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1333 transitions. [2020-10-12 21:00:53,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 21:00:53,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:53,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:53,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 21:00:53,445 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:53,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:53,445 INFO L82 PathProgramCache]: Analyzing trace with hash 588982789, now seen corresponding path program 1 times [2020-10-12 21:00:53,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:53,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140266252] [2020-10-12 21:00:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:53,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:53,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:53,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:54,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:56,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:58,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:58,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 21:00:58,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:00:58,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 21:00:58,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 21:00:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:00:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 21:00:58,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 21:00:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:58,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:58,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:58,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:58,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 21:00:58,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 21:00:58,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:00:58,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140266252] [2020-10-12 21:00:58,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:58,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:00:58,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411611872] [2020-10-12 21:00:58,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:00:58,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:58,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:00:58,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:00:58,800 INFO L87 Difference]: Start difference. First operand 860 states and 1333 transitions. Second operand 7 states. [2020-10-12 21:00:58,926 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:00:59,681 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 21:00:59,847 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 21:01:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:01,093 INFO L93 Difference]: Finished difference Result 1002 states and 1515 transitions. [2020-10-12 21:01:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:01:01,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-12 21:01:01,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:01,105 INFO L225 Difference]: With dead ends: 1002 [2020-10-12 21:01:01,106 INFO L226 Difference]: Without dead ends: 999 [2020-10-12 21:01:01,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-12 21:01:01,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-10-12 21:01:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 860. [2020-10-12 21:01:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2020-10-12 21:01:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1331 transitions. [2020-10-12 21:01:01,184 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1331 transitions. Word has length 50 [2020-10-12 21:01:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:01,185 INFO L479 AbstractCegarLoop]: Abstraction has 860 states and 1331 transitions. [2020-10-12 21:01:01,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:01:01,189 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1331 transitions. [2020-10-12 21:01:01,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 21:01:01,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:01,196 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:01,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 21:01:01,196 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:01,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:01,197 INFO L82 PathProgramCache]: Analyzing trace with hash -993481008, now seen corresponding path program 1 times [2020-10-12 21:01:01,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:01,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020251206] [2020-10-12 21:01:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:01,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:01,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:01,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:01,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:01,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:01,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:02,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:02,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:03,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:06,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:06,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 21:01:06,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 21:01:06,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 21:01:06,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:06,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 21:01:06,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 21:01:06,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:06,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:06,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:06,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:06,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:06,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:01:06,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:06,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:06,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:06,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:06,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:06,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:01:06,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:06,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 21:01:06,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:01:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 21:01:06,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 21:01:06,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020251206] [2020-10-12 21:01:06,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:01:06,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 21:01:06,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983180392] [2020-10-12 21:01:06,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:01:06,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:06,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:01:06,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:01:06,550 INFO L87 Difference]: Start difference. First operand 860 states and 1331 transitions. Second operand 6 states. [2020-10-12 21:01:06,675 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:01:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:09,036 INFO L93 Difference]: Finished difference Result 2726 states and 4385 transitions. [2020-10-12 21:01:09,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:01:09,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-12 21:01:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:09,054 INFO L225 Difference]: With dead ends: 2726 [2020-10-12 21:01:09,054 INFO L226 Difference]: Without dead ends: 1886 [2020-10-12 21:01:09,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 21:01:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2020-10-12 21:01:09,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1658. [2020-10-12 21:01:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-10-12 21:01:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2577 transitions. [2020-10-12 21:01:09,258 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2577 transitions. Word has length 61 [2020-10-12 21:01:09,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:09,259 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2577 transitions. [2020-10-12 21:01:09,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:01:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2577 transitions. [2020-10-12 21:01:09,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 21:01:09,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:09,265 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] [2020-10-12 21:01:09,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 21:01:09,266 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:09,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:09,267 INFO L82 PathProgramCache]: Analyzing trace with hash 31719669, now seen corresponding path program 1 times [2020-10-12 21:01:09,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:09,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478054229] [2020-10-12 21:01:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:09,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:09,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:10,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:12,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:12,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 21:01:12,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:01:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2998 [2020-10-12 21:01:12,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:12,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:01:12,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:12,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 21:01:12,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:12,449 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-12 21:01:12,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:12,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:12,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:12,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:12,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:12,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:01:12,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:12,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:12,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:12,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:12,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:12,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:01:12,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 21:01:12,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:01:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 21:01:12,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:01:12,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478054229] [2020-10-12 21:01:12,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:12,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:01:12,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159330562] [2020-10-12 21:01:12,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:01:12,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:12,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:01:12,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:01:12,652 INFO L87 Difference]: Start difference. First operand 1658 states and 2577 transitions. Second operand 6 states. [2020-10-12 21:01:12,830 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:01:14,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:14,615 INFO L93 Difference]: Finished difference Result 3360 states and 5284 transitions. [2020-10-12 21:01:14,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 21:01:14,616 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-12 21:01:14,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:14,632 INFO L225 Difference]: With dead ends: 3360 [2020-10-12 21:01:14,632 INFO L226 Difference]: Without dead ends: 1722 [2020-10-12 21:01:14,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 21:01:14,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-10-12 21:01:14,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1658. [2020-10-12 21:01:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-10-12 21:01:14,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2533 transitions. [2020-10-12 21:01:14,800 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2533 transitions. Word has length 73 [2020-10-12 21:01:14,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:14,800 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2533 transitions. [2020-10-12 21:01:14,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:01:14,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2533 transitions. [2020-10-12 21:01:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 21:01:14,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:14,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:14,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 21:01:14,805 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:14,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:14,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1918135184, now seen corresponding path program 1 times [2020-10-12 21:01:14,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:14,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794371418] [2020-10-12 21:01:14,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:14,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:15,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:15,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:15,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 21:01:15,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:01:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-12 21:01:15,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:15,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:01:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 21:01:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 21:01:15,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:15,499 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-12 21:01:15,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:15,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:15,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:15,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:15,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:15,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:01:15,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:15,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:15,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:15,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:15,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:15,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:01:15,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:15,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 21:01:15,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:15,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:15,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:15,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:01:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:01:15,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794371418] [2020-10-12 21:01:15,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:15,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 21:01:15,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2771380] [2020-10-12 21:01:15,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:01:15,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:15,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:01:15,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:01:15,682 INFO L87 Difference]: Start difference. First operand 1658 states and 2533 transitions. Second operand 10 states. [2020-10-12 21:01:15,822 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:01:16,161 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:01:16,394 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:16,938 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:01:17,103 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:18,233 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:01:18,442 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 21:01:18,893 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:01:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:19,919 INFO L93 Difference]: Finished difference Result 3791 states and 5969 transitions. [2020-10-12 21:01:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 21:01:19,921 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-10-12 21:01:19,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:19,935 INFO L225 Difference]: With dead ends: 3791 [2020-10-12 21:01:19,935 INFO L226 Difference]: Without dead ends: 2153 [2020-10-12 21:01:19,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-10-12 21:01:19,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2020-10-12 21:01:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1901. [2020-10-12 21:01:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1901 states. [2020-10-12 21:01:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 2956 transitions. [2020-10-12 21:01:20,152 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 2956 transitions. Word has length 74 [2020-10-12 21:01:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:20,152 INFO L479 AbstractCegarLoop]: Abstraction has 1901 states and 2956 transitions. [2020-10-12 21:01:20,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:01:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 2956 transitions. [2020-10-12 21:01:20,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-12 21:01:20,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:20,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:20,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 21:01:20,157 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:20,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:20,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1262933163, now seen corresponding path program 1 times [2020-10-12 21:01:20,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:20,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177724293] [2020-10-12 21:01:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:20,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:20,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:20,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 21:01:20,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:01:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-12 21:01:20,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:01:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 21:01:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 21:01:20,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:20,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:20,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:20,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:20,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:20,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:20,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:01:20,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:20,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:20,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:20,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:20,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:01:20,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:20,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 21:01:20,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:20,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:20,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:20,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:01:20,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:01:20,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177724293] [2020-10-12 21:01:20,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:20,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 21:01:20,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428455129] [2020-10-12 21:01:20,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:01:20,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:20,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:01:20,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:01:20,928 INFO L87 Difference]: Start difference. First operand 1901 states and 2956 transitions. Second operand 10 states. [2020-10-12 21:01:21,067 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:01:21,385 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:01:21,610 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:22,137 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:01:22,332 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:01:23,431 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:01:23,621 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 21:01:24,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:24,987 INFO L93 Difference]: Finished difference Result 2155 states and 3327 transitions. [2020-10-12 21:01:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 21:01:24,990 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-10-12 21:01:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:25,003 INFO L225 Difference]: With dead ends: 2155 [2020-10-12 21:01:25,003 INFO L226 Difference]: Without dead ends: 2152 [2020-10-12 21:01:25,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-12 21:01:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2020-10-12 21:01:25,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1901. [2020-10-12 21:01:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1901 states. [2020-10-12 21:01:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 2954 transitions. [2020-10-12 21:01:25,194 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 2954 transitions. Word has length 75 [2020-10-12 21:01:25,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:25,195 INFO L479 AbstractCegarLoop]: Abstraction has 1901 states and 2954 transitions. [2020-10-12 21:01:25,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:01:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 2954 transitions. [2020-10-12 21:01:25,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 21:01:25,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:25,201 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:25,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 21:01:25,202 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:25,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:25,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1387873509, now seen corresponding path program 1 times [2020-10-12 21:01:25,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:25,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380516743] [2020-10-12 21:01:25,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:25,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:28,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:29,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:30,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 21:01:30,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 21:01:30,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 21:01:30,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:01:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 21:01:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:30,389 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-12 21:01:30,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:30,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:30,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:30,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:30,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:01:30,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:30,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:30,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:30,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:30,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:01:30,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:30,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:01:30,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:01:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:01:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:30,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 21:01:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:30,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:30,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:01:30,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:01:30,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 21:01:30,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:01:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 21:01:30,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:01:30,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380516743] [2020-10-12 21:01:30,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:30,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 21:01:30,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887615435] [2020-10-12 21:01:30,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 21:01:30,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:30,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 21:01:30,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 21:01:30,582 INFO L87 Difference]: Start difference. First operand 1901 states and 2954 transitions. Second operand 8 states. [2020-10-12 21:01:30,717 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:01:31,259 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:01:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:34,537 INFO L93 Difference]: Finished difference Result 6380 states and 10359 transitions. [2020-10-12 21:01:34,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 21:01:34,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-12 21:01:34,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:34,567 INFO L225 Difference]: With dead ends: 6380 [2020-10-12 21:01:34,567 INFO L226 Difference]: Without dead ends: 4496 [2020-10-12 21:01:34,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-12 21:01:34,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2020-10-12 21:01:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4257. [2020-10-12 21:01:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4257 states. [2020-10-12 21:01:34,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4257 states to 4257 states and 6703 transitions. [2020-10-12 21:01:34,882 INFO L78 Accepts]: Start accepts. Automaton has 4257 states and 6703 transitions. Word has length 83 [2020-10-12 21:01:34,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:34,883 INFO L479 AbstractCegarLoop]: Abstraction has 4257 states and 6703 transitions. [2020-10-12 21:01:34,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 21:01:34,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4257 states and 6703 transitions. [2020-10-12 21:01:34,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 21:01:34,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:34,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:34,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 21:01:34,890 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:34,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:34,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1335618549, now seen corresponding path program 1 times [2020-10-12 21:01:34,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:34,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11797862] [2020-10-12 21:01:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:34,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:35,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:35,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:35,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:35,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:35,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:37,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:37,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:39,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:39,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 21:01:39,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 21:01:39,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 21:01:39,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:01:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 21:01:39,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:40,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:40,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:40,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:40,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:40,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:01:40,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:40,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:40,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:40,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:01:40,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:40,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 21:01:40,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:40,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:01:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 21:01:40,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:40,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 21:01:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:40,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:40,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:40,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:01:40,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:40,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:01:40,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:01:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:40,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 21:01:40,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11797862] [2020-10-12 21:01:40,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:01:40,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 21:01:40,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806475670] [2020-10-12 21:01:40,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:01:40,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:40,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:01:40,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:01:40,161 INFO L87 Difference]: Start difference. First operand 4257 states and 6703 transitions. Second operand 7 states. [2020-10-12 21:01:40,987 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:01:43,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:43,066 INFO L93 Difference]: Finished difference Result 12625 states and 24209 transitions. [2020-10-12 21:01:43,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 21:01:43,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-10-12 21:01:43,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:43,219 INFO L225 Difference]: With dead ends: 12625 [2020-10-12 21:01:43,220 INFO L226 Difference]: Without dead ends: 8854 [2020-10-12 21:01:43,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-12 21:01:43,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8854 states. [2020-10-12 21:01:44,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8854 to 7965. [2020-10-12 21:01:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7965 states. [2020-10-12 21:01:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7965 states to 7965 states and 15109 transitions. [2020-10-12 21:01:44,492 INFO L78 Accepts]: Start accepts. Automaton has 7965 states and 15109 transitions. Word has length 84 [2020-10-12 21:01:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:44,493 INFO L479 AbstractCegarLoop]: Abstraction has 7965 states and 15109 transitions. [2020-10-12 21:01:44,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:01:44,493 INFO L276 IsEmpty]: Start isEmpty. Operand 7965 states and 15109 transitions. [2020-10-12 21:01:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 21:01:44,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:44,501 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:44,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 21:01:44,501 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:44,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:44,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1827489987, now seen corresponding path program 1 times [2020-10-12 21:01:44,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:44,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590109515] [2020-10-12 21:01:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:44,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:45,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:45,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:49,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:49,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 21:01:49,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 21:01:49,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 21:01:49,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:01:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:01:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:49,655 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-12 21:01:49,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:49,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:49,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:49,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:49,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:49,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:01:49,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:49,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:49,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:49,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:49,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:49,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:49,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:49,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 21:01:49,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:49,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 21:01:49,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:49,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:01:49,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 21:01:49,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:49,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 21:01:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:49,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:49,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:49,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:01:49,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:01:49,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:01:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 21:01:49,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590109515] [2020-10-12 21:01:49,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:01:49,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 21:01:49,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325450396] [2020-10-12 21:01:49,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:01:49,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:49,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:01:49,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:01:49,802 INFO L87 Difference]: Start difference. First operand 7965 states and 15109 transitions. Second operand 7 states. [2020-10-12 21:01:49,944 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:01:50,530 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:01:53,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:53,190 INFO L93 Difference]: Finished difference Result 16006 states and 34892 transitions. [2020-10-12 21:01:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 21:01:53,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-10-12 21:01:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:53,363 INFO L225 Difference]: With dead ends: 16006 [2020-10-12 21:01:53,364 INFO L226 Difference]: Without dead ends: 8163 [2020-10-12 21:01:53,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-12 21:01:53,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8163 states. [2020-10-12 21:01:54,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8163 to 7382. [2020-10-12 21:01:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7382 states. [2020-10-12 21:01:54,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 15798 transitions. [2020-10-12 21:01:54,912 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 15798 transitions. Word has length 87 [2020-10-12 21:01:54,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:54,912 INFO L479 AbstractCegarLoop]: Abstraction has 7382 states and 15798 transitions. [2020-10-12 21:01:54,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:01:54,913 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 15798 transitions. [2020-10-12 21:01:54,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 21:01:54,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:54,923 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:54,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 21:01:54,924 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:54,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:54,924 INFO L82 PathProgramCache]: Analyzing trace with hash -543993378, now seen corresponding path program 1 times [2020-10-12 21:01:54,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:54,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964486448] [2020-10-12 21:01:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:54,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:55,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:55,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:57,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:57,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:59,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:59,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 21:01:59,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 21:01:59,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 21:01:59,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:01:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 21:01:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 21:01:59,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:00,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:00,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:00,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:00,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:00,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:00,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:02:00,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:00,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:00,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:00,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:02:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:00,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:00,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:00,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:02:00,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:00,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 21:02:00,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:02:00,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:02:00,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 21:02:00,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:00,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 21:02:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:00,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:00,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:02:00,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:00,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:02:00,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:00,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:00,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:02:00,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:00,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 21:02:00,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964486448] [2020-10-12 21:02:00,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:02:00,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 21:02:00,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062996799] [2020-10-12 21:02:00,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:02:00,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:00,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:02:00,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:02:00,251 INFO L87 Difference]: Start difference. First operand 7382 states and 15798 transitions. Second operand 6 states. [2020-10-12 21:02:00,373 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:02:02,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:02,991 INFO L93 Difference]: Finished difference Result 21812 states and 50775 transitions. [2020-10-12 21:02:02,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:02:02,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-12 21:02:02,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:03,301 INFO L225 Difference]: With dead ends: 21812 [2020-10-12 21:02:03,302 INFO L226 Difference]: Without dead ends: 14448 [2020-10-12 21:02:03,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 21:02:03,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14448 states. [2020-10-12 21:02:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14448 to 13412. [2020-10-12 21:02:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13412 states. [2020-10-12 21:02:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13412 states to 13412 states and 30833 transitions. [2020-10-12 21:02:05,135 INFO L78 Accepts]: Start accepts. Automaton has 13412 states and 30833 transitions. Word has length 99 [2020-10-12 21:02:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:05,136 INFO L479 AbstractCegarLoop]: Abstraction has 13412 states and 30833 transitions. [2020-10-12 21:02:05,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:02:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 13412 states and 30833 transitions. [2020-10-12 21:02:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 21:02:05,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:05,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:02:05,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 21:02:05,143 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:05,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:05,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1333069852, now seen corresponding path program 1 times [2020-10-12 21:02:05,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:05,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922611832] [2020-10-12 21:02:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:05,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:05,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:05,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:05,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:05,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:06,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:10,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:10,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 21:02:10,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 21:02:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 21:02:10,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:02:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 21:02:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 21:02:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:10,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:10,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:10,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:10,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:10,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:10,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:02:10,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:10,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:10,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:02:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:10,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:10,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:10,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:02:10,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:10,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 21:02:10,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:02:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:02:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 21:02:10,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:10,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 21:02:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:10,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:10,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:10,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:02:10,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:10,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 21:02:10,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:10,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:02:10,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:02:10,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 21:02:10,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 21:02:10,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922611832] [2020-10-12 21:02:10,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:02:10,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:02:10,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159307037] [2020-10-12 21:02:10,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:02:10,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:10,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:02:10,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:02:10,452 INFO L87 Difference]: Start difference. First operand 13412 states and 30833 transitions. Second operand 6 states. [2020-10-12 21:02:10,620 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:02:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:13,594 INFO L93 Difference]: Finished difference Result 25726 states and 59115 transitions. [2020-10-12 21:02:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:02:13,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-12 21:02:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:13,779 INFO L225 Difference]: With dead ends: 25726 [2020-10-12 21:02:13,780 INFO L226 Difference]: Without dead ends: 12303 [2020-10-12 21:02:14,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 21:02:14,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12303 states. [2020-10-12 21:02:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12303 to 10208. [2020-10-12 21:02:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10208 states. [2020-10-12 21:02:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10208 states to 10208 states and 22112 transitions. [2020-10-12 21:02:15,287 INFO L78 Accepts]: Start accepts. Automaton has 10208 states and 22112 transitions. Word has length 99 [2020-10-12 21:02:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:15,287 INFO L479 AbstractCegarLoop]: Abstraction has 10208 states and 22112 transitions. [2020-10-12 21:02:15,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:02:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 10208 states and 22112 transitions. [2020-10-12 21:02:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 21:02:15,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:15,292 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:02:15,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 21:02:15,292 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:15,293 INFO L82 PathProgramCache]: Analyzing trace with hash -305840748, now seen corresponding path program 1 times [2020-10-12 21:02:15,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:15,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357923349] [2020-10-12 21:02:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:15,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:15,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:15,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:15,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:15,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:15,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:16,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:18,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:20,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:20,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 21:02:20,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 21:02:20,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 21:02:20,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 21:02:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 21:02:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 21:02:20,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:20,481 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-12 21:02:20,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:20,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:20,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:20,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:20,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:02:20,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:20,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:20,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:02:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:20,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:20,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:20,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:02:20,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:20,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 21:02:20,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:20,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:02:20,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:20,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 21:02:20,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:20,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 21:02:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:20,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:20,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:02:20,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:20,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 21:02:20,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:02:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:02:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 21:02:20,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 21:02:20,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357923349] [2020-10-12 21:02:20,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:02:20,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 21:02:20,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884570541] [2020-10-12 21:02:20,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 21:02:20,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:20,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 21:02:20,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-12 21:02:20,734 INFO L87 Difference]: Start difference. First operand 10208 states and 22112 transitions. Second operand 14 states. [2020-10-12 21:02:20,895 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:02:21,196 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:02:21,534 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-10-12 21:02:22,129 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 130 [2020-10-12 21:02:22,629 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 21:02:22,834 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 21:02:23,597 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:02:23,814 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 21:02:24,099 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 129 [2020-10-12 21:02:24,442 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 132 [2020-10-12 21:02:24,953 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:02:26,023 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:02:26,547 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 21:02:26,724 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:02:26,873 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:02:27,049 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:02:27,217 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:02:27,454 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 21:02:27,909 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:02:28,098 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:02:28,396 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:02:29,170 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:02:29,905 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 21:02:30,081 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:02:30,283 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 21:02:30,697 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:02:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:33,733 INFO L93 Difference]: Finished difference Result 38922 states and 134560 transitions. [2020-10-12 21:02:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-12 21:02:33,734 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-10-12 21:02:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:34,552 INFO L225 Difference]: With dead ends: 38922 [2020-10-12 21:02:34,552 INFO L226 Difference]: Without dead ends: 38919 [2020-10-12 21:02:34,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=751, Invalid=3941, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 21:02:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38919 states. [2020-10-12 21:02:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38919 to 34375. [2020-10-12 21:02:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34375 states. [2020-10-12 21:02:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34375 states to 34375 states and 110724 transitions. [2020-10-12 21:02:43,663 INFO L78 Accepts]: Start accepts. Automaton has 34375 states and 110724 transitions. Word has length 100 [2020-10-12 21:02:43,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:43,664 INFO L479 AbstractCegarLoop]: Abstraction has 34375 states and 110724 transitions. [2020-10-12 21:02:43,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 21:02:43,664 INFO L276 IsEmpty]: Start isEmpty. Operand 34375 states and 110724 transitions. [2020-10-12 21:02:43,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 21:02:43,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:43,669 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:02:43,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 21:02:43,670 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:43,670 INFO L82 PathProgramCache]: Analyzing trace with hash -295546873, now seen corresponding path program 1 times [2020-10-12 21:02:43,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:43,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662392897] [2020-10-12 21:02:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:43,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:43,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:43,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:43,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:45,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:46,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:49,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 21:02:49,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 21:02:49,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5474 [2020-10-12 21:02:49,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:49,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 21:02:49,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 21:02:49,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 21:02:49,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:49,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:49,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:49,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:49,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:49,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:02:49,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:49,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:49,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:49,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:49,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:49,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:02:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:49,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:02:49,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:49,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 21:02:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:02:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 21:02:49,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 21:02:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:49,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:49,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:02:49,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 21:02:49,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:02:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:02:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 21:02:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 21:02:49,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662392897] [2020-10-12 21:02:49,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:02:49,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 21:02:49,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555683427] [2020-10-12 21:02:49,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 21:02:49,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:49,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 21:02:49,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-12 21:02:49,550 INFO L87 Difference]: Start difference. First operand 34375 states and 110724 transitions. Second operand 14 states. [2020-10-12 21:02:49,827 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 128 [2020-10-12 21:02:50,276 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 131 [2020-10-12 21:02:50,594 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 134 [2020-10-12 21:02:51,262 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-12 21:02:51,998 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 131 [2020-10-12 21:02:52,374 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 136 [2020-10-12 21:02:52,620 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-12 21:02:53,298 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:02:53,522 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:02:53,810 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2020-10-12 21:02:54,151 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2020-10-12 21:02:56,030 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:02:56,326 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:02:56,484 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 21:02:56,615 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:02:56,831 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:02:57,004 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:02:57,251 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 21:02:57,799 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:02:57,996 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:02:59,077 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-12 21:02:59,887 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 21:03:00,091 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:03:00,335 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:03:04,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:03:04,848 INFO L93 Difference]: Finished difference Result 42831 states and 161597 transitions. [2020-10-12 21:03:04,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-12 21:03:04,849 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 101 [2020-10-12 21:03:04,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:03:05,693 INFO L225 Difference]: With dead ends: 42831 [2020-10-12 21:03:05,693 INFO L226 Difference]: Without dead ends: 42828 [2020-10-12 21:03:05,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1437 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=662, Invalid=3894, Unknown=0, NotChecked=0, Total=4556 [2020-10-12 21:03:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42828 states. [2020-10-12 21:03:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42828 to 35875. [2020-10-12 21:03:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35875 states. [2020-10-12 21:03:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35875 states to 35875 states and 118265 transitions. [2020-10-12 21:03:14,088 INFO L78 Accepts]: Start accepts. Automaton has 35875 states and 118265 transitions. Word has length 101 [2020-10-12 21:03:14,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:03:14,088 INFO L479 AbstractCegarLoop]: Abstraction has 35875 states and 118265 transitions. [2020-10-12 21:03:14,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 21:03:14,089 INFO L276 IsEmpty]: Start isEmpty. Operand 35875 states and 118265 transitions. [2020-10-12 21:03:14,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 21:03:14,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:03:14,095 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:03:14,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 21:03:14,095 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:03:14,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:03:14,096 INFO L82 PathProgramCache]: Analyzing trace with hash 519169932, now seen corresponding path program 1 times [2020-10-12 21:03:14,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:03:14,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772464307] [2020-10-12 21:03:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:03:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:14,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:14,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:14,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:14,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:14,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:14,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:14,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:15,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:15,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:18,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:19,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:19,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 21:03:19,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 21:03:19,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 21:03:19,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:19,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 21:03:19,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:03:19,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 21:03:19,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:19,288 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-12 21:03:19,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:03:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:19,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:19,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:19,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:03:19,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:03:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:03:19,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:03:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:03:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 21:03:19,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:19,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:03:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:19,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:19,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:03:19,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:03:19,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 21:03:19,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:19,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:03:19,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:03:19,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 21:03:19,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:19,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 21:03:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:19,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:19,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:19,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 21:03:19,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:03:19,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 21:03:19,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:03:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:03:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 21:03:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 21:03:19,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772464307] [2020-10-12 21:03:19,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:03:19,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 21:03:19,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906823895] [2020-10-12 21:03:19,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 21:03:19,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:03:19,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 21:03:19,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 21:03:19,500 INFO L87 Difference]: Start difference. First operand 35875 states and 118265 transitions. Second operand 12 states. [2020-10-12 21:03:19,770 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 127 [2020-10-12 21:03:20,366 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:03:23,177 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:03:23,707 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:03:24,915 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 129 [2020-10-12 21:03:25,312 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 129 [2020-10-12 21:03:25,619 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 131 [2020-10-12 21:03:25,916 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-12 21:03:27,703 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:03:28,303 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-12 21:03:28,647 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:03:29,101 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:03:29,255 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:03:29,495 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:03:30,917 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-12 21:03:32,263 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 21:03:32,668 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 21:03:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:03:42,081 INFO L93 Difference]: Finished difference Result 108708 states and 430167 transitions. [2020-10-12 21:03:42,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 21:03:42,081 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-10-12 21:03:42,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:03:43,782 INFO L225 Difference]: With dead ends: 108708 [2020-10-12 21:03:43,782 INFO L226 Difference]: Without dead ends: 108705 [2020-10-12 21:03:43,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=379, Invalid=1601, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 21:03:44,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108705 states.