/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/zero_sum5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:18:51,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:18:51,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:18:51,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:18:51,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:18:51,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:18:51,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:18:51,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:18:51,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:18:51,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:18:51,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:18:51,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:18:51,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:18:51,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:18:51,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:18:51,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:18:51,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:18:51,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:18:51,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:18:51,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:18:51,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:18:51,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:18:51,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:18:51,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:18:51,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:18:51,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:18:51,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:18:51,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:18:51,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:18:51,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:18:51,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:18:51,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:18:51,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:18:51,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:18:51,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:18:51,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:18:51,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:18:51,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:18:51,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:18:51,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:18:51,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:18:51,085 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 [2020-10-13 23:18:51,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:18:51,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:18:51,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:18:51,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:18:51,109 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:18:51,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:18:51,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:18:51,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:18:51,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:18:51,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:18:51,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:18:51,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:18:51,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:18:51,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:18:51,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:18:51,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:18:51,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:18:51,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:18:51,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:18:51,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:18:51,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:18:51,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:18:51,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:18:51,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:18:51,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:18:51,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:18:51,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:18:51,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:18:51,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:18:51,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:18:51,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:18:51,451 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:18:51,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:18:51,459 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:18:51,459 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:18:51,460 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum5.c [2020-10-13 23:18:51,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/284709a59/530592d71f0e4bef923d04303454d19c/FLAGbdecd727c [2020-10-13 23:18:51,954 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:18:51,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum5.c [2020-10-13 23:18:51,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/284709a59/530592d71f0e4bef923d04303454d19c/FLAGbdecd727c [2020-10-13 23:18:52,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/284709a59/530592d71f0e4bef923d04303454d19c [2020-10-13 23:18:52,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:18:52,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:18:52,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:18:52,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:18:52,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:18:52,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:52" (1/1) ... [2020-10-13 23:18:52,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db9ac37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52, skipping insertion in model container [2020-10-13 23:18:52,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:52" (1/1) ... [2020-10-13 23:18:52,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:18:52,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:18:52,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:18:52,607 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:18:52,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:18:52,748 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:18:52,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52 WrapperNode [2020-10-13 23:18:52,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:18:52,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:18:52,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:18:52,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:18:52,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2020-10-13 23:18:52,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2020-10-13 23:18:52,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2020-10-13 23:18:52,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2020-10-13 23:18:52,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2020-10-13 23:18:52,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2020-10-13 23:18:52,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2020-10-13 23:18:52,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:18:52,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:18:52,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:18:52,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:18:52,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (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 [2020-10-13 23:18:52,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:18:52,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:18:52,869 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 23:18:52,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:18:52,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:18:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:18:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 23:18:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 23:18:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:18:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-13 23:18:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:18:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:18:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:18:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:18:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:18:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:18:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:18:53,230 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:18:53,231 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-13 23:18:53,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:53 BoogieIcfgContainer [2020-10-13 23:18:53,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:18:53,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:18:53,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:18:53,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:18:53,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:18:52" (1/3) ... [2020-10-13 23:18:53,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@daa89bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:53, skipping insertion in model container [2020-10-13 23:18:53,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (2/3) ... [2020-10-13 23:18:53,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@daa89bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:53, skipping insertion in model container [2020-10-13 23:18:53,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:53" (3/3) ... [2020-10-13 23:18:53,245 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum5.c [2020-10-13 23:18:53,259 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:18:53,266 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:18:53,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:18:53,339 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:18:53,340 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:18:53,340 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:18:53,340 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:18:53,340 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:18:53,340 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:18:53,341 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:18:53,341 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:18:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-13 23:18:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:18:53,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:53,368 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] [2020-10-13 23:18:53,369 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:53,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1396756151, now seen corresponding path program 1 times [2020-10-13 23:18:53,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:53,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277027143] [2020-10-13 23:18:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:53,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:53,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:53,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:53,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:53,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:54,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:58,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:58,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:58,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 23:18:58,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:18:58,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:58,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:18:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 23:18:58,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:58,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:58,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:58,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:58,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:18:58,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:58,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:58,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:18:58,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277027143] [2020-10-13 23:18:58,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:18:58,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:18:58,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696256250] [2020-10-13 23:18:58,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:18:58,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:58,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:18:58,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:18:58,675 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-10-13 23:18:58,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:58,881 INFO L93 Difference]: Finished difference Result 95 states and 139 transitions. [2020-10-13 23:18:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:18:58,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 23:18:58,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:58,893 INFO L225 Difference]: With dead ends: 95 [2020-10-13 23:18:58,893 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 23:18:58,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:18:58,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 23:18:58,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-13 23:18:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 23:18:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2020-10-13 23:18:58,947 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 32 [2020-10-13 23:18:58,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:58,948 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-13 23:18:58,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:18:58,949 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2020-10-13 23:18:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:18:58,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:58,950 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] [2020-10-13 23:18:58,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:18:58,951 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:58,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:58,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1123092955, now seen corresponding path program 1 times [2020-10-13 23:18:58,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:58,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218227882] [2020-10-13 23:18:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:58,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:58,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:58,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:59,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:59,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:59,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:59,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:59,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:03,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:03,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:19:03,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 23:19:03,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 23:19:03,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:03,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:19:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:19:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 23:19:04,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:04,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:04,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:04,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:04,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:04,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:19:04,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:04,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:04,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:04,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:04,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:19:04,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218227882] [2020-10-13 23:19:04,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:19:04,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:19:04,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308514259] [2020-10-13 23:19:04,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:19:04,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:04,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:19:04,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:19:04,045 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 4 states. [2020-10-13 23:19:04,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:04,266 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2020-10-13 23:19:04,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:19:04,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 23:19:04,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:04,269 INFO L225 Difference]: With dead ends: 81 [2020-10-13 23:19:04,269 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 23:19:04,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:19:04,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 23:19:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 23:19:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 23:19:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-10-13 23:19:04,292 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 32 [2020-10-13 23:19:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:04,293 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-10-13 23:19:04,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:19:04,294 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-10-13 23:19:04,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 23:19:04,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:04,297 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] [2020-10-13 23:19:04,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:19:04,298 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:04,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:04,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1903477091, now seen corresponding path program 1 times [2020-10-13 23:19:04,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:04,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117164505] [2020-10-13 23:19:04,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:04,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:04,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:04,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:04,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:04,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:04,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:05,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:09,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:09,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:19:09,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 23:19:09,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:19:09,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:09,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:19:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:19:09,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:09,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:09,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:09,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:09,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:09,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:09,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:09,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:19:09,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117164505] [2020-10-13 23:19:09,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:19:09,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 23:19:09,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385788225] [2020-10-13 23:19:09,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:19:09,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:09,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:19:09,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:19:09,380 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 5 states. [2020-10-13 23:19:09,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:09,643 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2020-10-13 23:19:09,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:19:09,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-13 23:19:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:09,645 INFO L225 Difference]: With dead ends: 97 [2020-10-13 23:19:09,645 INFO L226 Difference]: Without dead ends: 65 [2020-10-13 23:19:09,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:19:09,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-13 23:19:09,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2020-10-13 23:19:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 23:19:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-13 23:19:09,656 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 34 [2020-10-13 23:19:09,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:09,657 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-13 23:19:09,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:19:09,657 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-13 23:19:09,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 23:19:09,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:09,659 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] [2020-10-13 23:19:09,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:19:09,659 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:09,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:09,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1916053391, now seen corresponding path program 1 times [2020-10-13 23:19:09,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:09,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470694039] [2020-10-13 23:19:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:09,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:09,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:09,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:09,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:09,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:10,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:14,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:14,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 23:19:14,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 23:19:14,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:19:14,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:14,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:14,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:19:14,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:14,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:19:14,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:14,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:14,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:14,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:14,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:14,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:14,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:19:14,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:14,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 23:19:14,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470694039] [2020-10-13 23:19:14,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:14,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:19:14,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726710969] [2020-10-13 23:19:14,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:19:14,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:14,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:19:14,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:19:14,753 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 6 states. [2020-10-13 23:19:15,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:15,056 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2020-10-13 23:19:15,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:19:15,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-13 23:19:15,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:15,059 INFO L225 Difference]: With dead ends: 116 [2020-10-13 23:19:15,059 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 23:19:15,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:19:15,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 23:19:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-13 23:19:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 23:19:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-10-13 23:19:15,070 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 54 [2020-10-13 23:19:15,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:15,070 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-10-13 23:19:15,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:19:15,071 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-10-13 23:19:15,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 23:19:15,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:15,073 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-10-13 23:19:15,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:19:15,074 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:15,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:15,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1408135099, now seen corresponding path program 2 times [2020-10-13 23:19:15,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:15,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798147925] [2020-10-13 23:19:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:15,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:16,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:17,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:18,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:19,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:20,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:20,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 23:19:20,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:19:20,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5273 [2020-10-13 23:19:20,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:20,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:19:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:19:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:20,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:20,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:20,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:20,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:20,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:20,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:19:20,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:20,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:20,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 23:19:20,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798147925] [2020-10-13 23:19:20,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:20,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:19:20,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654337901] [2020-10-13 23:19:20,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:19:20,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:20,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:19:20,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:19:20,460 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 5 states. [2020-10-13 23:19:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:20,663 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2020-10-13 23:19:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:19:20,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-13 23:19:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:20,665 INFO L225 Difference]: With dead ends: 142 [2020-10-13 23:19:20,665 INFO L226 Difference]: Without dead ends: 77 [2020-10-13 23:19:20,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:19:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-13 23:19:20,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-13 23:19:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:19:20,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-10-13 23:19:20,690 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 74 [2020-10-13 23:19:20,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:20,691 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-10-13 23:19:20,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:19:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-10-13 23:19:20,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 23:19:20,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:20,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-10-13 23:19:20,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:19:20,702 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:20,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:20,703 INFO L82 PathProgramCache]: Analyzing trace with hash 582962553, now seen corresponding path program 3 times [2020-10-13 23:19:20,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:20,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172230591] [2020-10-13 23:19:20,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:20,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:21,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:22,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:23,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:25,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:26,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:26,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 23:19:26,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:19:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5438 [2020-10-13 23:19:26,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:26,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-13 23:19:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 23:19:26,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:28,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:28,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:28,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:28,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:28,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:28,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:19:28,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:28,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:28,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:28,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:28,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:28,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:19:28,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172230591] [2020-10-13 23:19:28,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:28,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-13 23:19:28,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414515805] [2020-10-13 23:19:28,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-13 23:19:28,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:28,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-13 23:19:28,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 23:19:28,725 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 38 states. [2020-10-13 23:19:29,770 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-13 23:19:30,359 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-13 23:19:31,234 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-10-13 23:19:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:33,608 INFO L93 Difference]: Finished difference Result 217 states and 252 transitions. [2020-10-13 23:19:33,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 23:19:33,609 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 76 [2020-10-13 23:19:33,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:33,614 INFO L225 Difference]: With dead ends: 217 [2020-10-13 23:19:33,614 INFO L226 Difference]: Without dead ends: 211 [2020-10-13 23:19:33,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 7 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=329, Invalid=2751, Unknown=0, NotChecked=0, Total=3080 [2020-10-13 23:19:33,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-13 23:19:33,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 189. [2020-10-13 23:19:33,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-13 23:19:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 218 transitions. [2020-10-13 23:19:33,640 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 218 transitions. Word has length 76 [2020-10-13 23:19:33,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:33,641 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 218 transitions. [2020-10-13 23:19:33,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-13 23:19:33,641 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 218 transitions. [2020-10-13 23:19:33,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 23:19:33,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:33,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2020-10-13 23:19:33,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:19:33,644 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:33,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1848098441, now seen corresponding path program 4 times [2020-10-13 23:19:33,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:33,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100685140] [2020-10-13 23:19:33,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:33,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:33,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:33,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:33,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:33,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:33,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:38,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:38,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 23:19:38,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 23:19:38,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:19:38,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:38,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:38,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:19:38,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:38,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 23:19:38,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:38,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:38,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:38,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:38,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:38,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:38,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:38,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:38,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:19:38,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100685140] [2020-10-13 23:19:38,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:38,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:19:38,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164042179] [2020-10-13 23:19:38,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:19:38,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:38,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:19:38,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:19:38,768 INFO L87 Difference]: Start difference. First operand 189 states and 218 transitions. Second operand 10 states. [2020-10-13 23:19:39,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:39,204 INFO L93 Difference]: Finished difference Result 301 states and 347 transitions. [2020-10-13 23:19:39,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:19:39,205 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-13 23:19:39,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:39,206 INFO L225 Difference]: With dead ends: 301 [2020-10-13 23:19:39,206 INFO L226 Difference]: Without dead ends: 133 [2020-10-13 23:19:39,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:19:39,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-13 23:19:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2020-10-13 23:19:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-13 23:19:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2020-10-13 23:19:39,234 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 78 [2020-10-13 23:19:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:39,234 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2020-10-13 23:19:39,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:19:39,234 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2020-10-13 23:19:39,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 23:19:39,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:39,236 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-13 23:19:39,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:19:39,236 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:39,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1150574219, now seen corresponding path program 5 times [2020-10-13 23:19:39,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:39,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086241062] [2020-10-13 23:19:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:39,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:39,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:39,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:40,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:44,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:44,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 23:19:44,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:19:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:19:44,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:44,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:19:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 23:19:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:19:44,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:44,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:44,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:44,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:44,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:44,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:44,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:44,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:44,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-13 23:19:44,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086241062] [2020-10-13 23:19:44,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:44,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:19:44,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585995728] [2020-10-13 23:19:44,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:19:44,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:44,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:19:44,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:19:44,340 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand 10 states. [2020-10-13 23:19:45,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:45,124 INFO L93 Difference]: Finished difference Result 206 states and 241 transitions. [2020-10-13 23:19:45,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:19:45,124 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-13 23:19:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:45,127 INFO L225 Difference]: With dead ends: 206 [2020-10-13 23:19:45,127 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 23:19:45,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:19:45,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 23:19:45,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 142. [2020-10-13 23:19:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-13 23:19:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 160 transitions. [2020-10-13 23:19:45,143 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 160 transitions. Word has length 80 [2020-10-13 23:19:45,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:45,143 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 160 transitions. [2020-10-13 23:19:45,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:19:45,144 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 160 transitions. [2020-10-13 23:19:45,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 23:19:45,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:45,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-13 23:19:45,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:19:45,145 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:45,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:45,146 INFO L82 PathProgramCache]: Analyzing trace with hash -934137867, now seen corresponding path program 6 times [2020-10-13 23:19:45,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:45,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154100902] [2020-10-13 23:19:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:45,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:49,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:50,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 23:19:50,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 23:19:50,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:19:50,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:50,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:19:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 23:19:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 23:19:50,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:50,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:50,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:50,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:50,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:50,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:50,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:50,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:50,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:50,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:50,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:50,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-13 23:19:50,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154100902] [2020-10-13 23:19:50,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:50,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:19:50,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632652140] [2020-10-13 23:19:50,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:19:50,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:50,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:19:50,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:19:50,252 INFO L87 Difference]: Start difference. First operand 142 states and 160 transitions. Second operand 10 states. [2020-10-13 23:19:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:50,902 INFO L93 Difference]: Finished difference Result 234 states and 261 transitions. [2020-10-13 23:19:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:19:50,902 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-13 23:19:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:50,904 INFO L225 Difference]: With dead ends: 234 [2020-10-13 23:19:50,904 INFO L226 Difference]: Without dead ends: 109 [2020-10-13 23:19:50,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:19:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-13 23:19:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2020-10-13 23:19:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 23:19:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-10-13 23:19:50,914 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 80 [2020-10-13 23:19:50,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:50,915 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-10-13 23:19:50,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:19:50,915 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-10-13 23:19:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 23:19:50,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:50,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:19:50,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:19:50,917 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:50,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1686861853, now seen corresponding path program 7 times [2020-10-13 23:19:50,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:50,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706347619] [2020-10-13 23:19:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:51,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:52,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:53,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:56,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:56,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 23:19:56,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:19:56,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:19:56,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:56,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-13 23:19:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 23:19:56,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:57,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:57,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:57,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:57,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:57,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 23:19:57,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706347619] [2020-10-13 23:19:57,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:57,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:19:57,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635486636] [2020-10-13 23:19:57,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:19:57,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:57,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:19:57,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:19:57,399 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 23 states. [2020-10-13 23:19:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:59,155 INFO L93 Difference]: Finished difference Result 178 states and 197 transitions. [2020-10-13 23:19:59,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:19:59,156 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 98 [2020-10-13 23:19:59,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:59,159 INFO L225 Difference]: With dead ends: 178 [2020-10-13 23:19:59,159 INFO L226 Difference]: Without dead ends: 173 [2020-10-13 23:19:59,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 26 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:19:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-13 23:19:59,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2020-10-13 23:19:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-13 23:19:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2020-10-13 23:19:59,177 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 98 [2020-10-13 23:19:59,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:59,178 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2020-10-13 23:19:59,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:19:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2020-10-13 23:19:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 23:19:59,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:59,179 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:19:59,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:19:59,180 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:59,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:59,180 INFO L82 PathProgramCache]: Analyzing trace with hash -465843551, now seen corresponding path program 8 times [2020-10-13 23:19:59,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:59,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233625434] [2020-10-13 23:19:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:59,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:59,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:59,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:59,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:59,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:01,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:04,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:04,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:20:04,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:20:04,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:20:04,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:04,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:20:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:20:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 23:20:04,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:04,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:04,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:04,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:04,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:04,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:04,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:04,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:04,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:04,346 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-13 23:20:04,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233625434] [2020-10-13 23:20:04,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:04,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:20:04,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254514012] [2020-10-13 23:20:04,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:20:04,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:04,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:20:04,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:20:04,351 INFO L87 Difference]: Start difference. First operand 168 states and 187 transitions. Second operand 12 states. [2020-10-13 23:20:05,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:05,060 INFO L93 Difference]: Finished difference Result 330 states and 368 transitions. [2020-10-13 23:20:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:20:05,061 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-10-13 23:20:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:05,063 INFO L225 Difference]: With dead ends: 330 [2020-10-13 23:20:05,063 INFO L226 Difference]: Without dead ends: 171 [2020-10-13 23:20:05,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:20:05,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-13 23:20:05,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2020-10-13 23:20:05,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 23:20:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 189 transitions. [2020-10-13 23:20:05,084 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 189 transitions. Word has length 100 [2020-10-13 23:20:05,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:05,084 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 189 transitions. [2020-10-13 23:20:05,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:20:05,084 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 189 transitions. [2020-10-13 23:20:05,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 23:20:05,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:05,089 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:20:05,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:20:05,090 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:05,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:05,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1420613343, now seen corresponding path program 9 times [2020-10-13 23:20:05,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:05,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098365317] [2020-10-13 23:20:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:05,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:05,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:05,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:05,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:08,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:10,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:10,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:20:10,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:20:10,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:20:10,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:10,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:20:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 23:20:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:20:10,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:10,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:10,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:10,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:10,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:10,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:10,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:10,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:10,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 23:20:10,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098365317] [2020-10-13 23:20:10,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:10,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:20:10,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483168195] [2020-10-13 23:20:10,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:20:10,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:10,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:20:10,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:20:10,219 INFO L87 Difference]: Start difference. First operand 170 states and 189 transitions. Second operand 12 states. [2020-10-13 23:20:11,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:11,221 INFO L93 Difference]: Finished difference Result 262 states and 297 transitions. [2020-10-13 23:20:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:20:11,222 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-10-13 23:20:11,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:11,223 INFO L225 Difference]: With dead ends: 262 [2020-10-13 23:20:11,223 INFO L226 Difference]: Without dead ends: 193 [2020-10-13 23:20:11,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:20:11,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-13 23:20:11,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 178. [2020-10-13 23:20:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 23:20:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 196 transitions. [2020-10-13 23:20:11,238 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 196 transitions. Word has length 102 [2020-10-13 23:20:11,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:11,238 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 196 transitions. [2020-10-13 23:20:11,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:20:11,238 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 196 transitions. [2020-10-13 23:20:11,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 23:20:11,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:11,240 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:20:11,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:20:11,240 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:11,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:11,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1032041823, now seen corresponding path program 10 times [2020-10-13 23:20:11,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:11,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241698963] [2020-10-13 23:20:11,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:11,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:11,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:11,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:11,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:11,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:11,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:13,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:16,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:16,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:20:16,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:20:16,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:20:16,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:16,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:20:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:20:16,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 23:20:16,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:16,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:16,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:16,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:16,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:16,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:16,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:16,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:16,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:16,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 23:20:16,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241698963] [2020-10-13 23:20:16,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:16,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:20:16,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358600024] [2020-10-13 23:20:16,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:20:16,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:16,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:20:16,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:20:16,365 INFO L87 Difference]: Start difference. First operand 178 states and 196 transitions. Second operand 12 states. [2020-10-13 23:20:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:16,913 INFO L93 Difference]: Finished difference Result 265 states and 291 transitions. [2020-10-13 23:20:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:20:16,913 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-10-13 23:20:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:16,915 INFO L225 Difference]: With dead ends: 265 [2020-10-13 23:20:16,915 INFO L226 Difference]: Without dead ends: 121 [2020-10-13 23:20:16,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:20:16,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-13 23:20:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-10-13 23:20:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 23:20:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2020-10-13 23:20:16,925 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 102 [2020-10-13 23:20:16,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:16,925 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2020-10-13 23:20:16,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:20:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2020-10-13 23:20:16,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 23:20:16,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:16,926 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:20:16,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:20:16,927 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:16,927 INFO L82 PathProgramCache]: Analyzing trace with hash -249432371, now seen corresponding path program 11 times [2020-10-13 23:20:16,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:16,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532218660] [2020-10-13 23:20:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:19,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:22,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:22,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 23:20:22,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:22,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 23:20:22,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:22,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:22,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 91 [2020-10-13 23:20:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:20:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 23:20:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:20:26,359 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-10-13 23:20:26,581 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-13 23:20:26,818 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2020-10-13 23:20:27,046 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-13 23:20:27,328 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-10-13 23:20:27,678 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-10-13 23:20:27,941 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-10-13 23:20:28,215 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-10-13 23:20:28,450 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-13 23:20:28,676 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-13 23:20:29,288 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2020-10-13 23:20:29,569 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2020-10-13 23:20:29,841 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2020-10-13 23:20:30,094 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-13 23:20:30,329 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-13 23:20:30,576 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-13 23:20:31,865 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 44 [2020-10-13 23:20:32,200 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 46 [2020-10-13 23:20:32,475 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-13 23:20:32,761 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-13 23:20:32,995 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-10-13 23:20:33,225 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-10-13 23:20:33,461 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-10-13 23:20:36,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:36,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:36,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:36,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:36,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:36,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:36,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 9 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:20:36,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532218660] [2020-10-13 23:20:36,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:36,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-10-13 23:20:36,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698620991] [2020-10-13 23:20:36,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-10-13 23:20:36,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:36,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-10-13 23:20:36,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=6088, Unknown=0, NotChecked=0, Total=6480 [2020-10-13 23:20:36,608 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand 81 states. [2020-10-13 23:20:37,256 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 15 [2020-10-13 23:20:38,217 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-13 23:20:38,745 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-13 23:20:39,546 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-13 23:20:39,986 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-13 23:20:40,662 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 23:20:40,972 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-13 23:20:41,350 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-10-13 23:20:41,752 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-10-13 23:20:42,158 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-13 23:20:42,507 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-10-13 23:20:42,848 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-13 23:20:43,175 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-13 23:20:43,597 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-13 23:20:44,342 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-10-13 23:20:44,853 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-13 23:20:46,183 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-10-13 23:20:46,578 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-10-13 23:20:47,336 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-13 23:20:47,890 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-13 23:20:48,331 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-13 23:20:48,751 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-10-13 23:20:49,091 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-13 23:20:49,462 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-13 23:20:49,808 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-13 23:20:55,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:55,918 INFO L93 Difference]: Finished difference Result 244 states and 269 transitions. [2020-10-13 23:20:55,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-13 23:20:55,919 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 120 [2020-10-13 23:20:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:55,921 INFO L225 Difference]: With dead ends: 244 [2020-10-13 23:20:55,922 INFO L226 Difference]: Without dead ends: 228 [2020-10-13 23:20:55,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 12 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4284 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=1056, Invalid=13950, Unknown=0, NotChecked=0, Total=15006 [2020-10-13 23:20:55,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-13 23:20:55,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 206. [2020-10-13 23:20:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-13 23:20:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 225 transitions. [2020-10-13 23:20:55,947 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 225 transitions. Word has length 120 [2020-10-13 23:20:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:55,948 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 225 transitions. [2020-10-13 23:20:55,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-10-13 23:20:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 225 transitions. [2020-10-13 23:20:55,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 23:20:55,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:55,949 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:20:55,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:20:55,950 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:55,950 INFO L82 PathProgramCache]: Analyzing trace with hash 399230411, now seen corresponding path program 12 times [2020-10-13 23:20:55,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:55,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854952822] [2020-10-13 23:20:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:56,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:56,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:56,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:00,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 23:21:00,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:21:00,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 23:21:00,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:00,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:21:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:21:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 23:21:00,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:01,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:01,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:01,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:01,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:01,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:01,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:01,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:21:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 23:21:01,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854952822] [2020-10-13 23:21:01,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:01,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:21:01,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916673787] [2020-10-13 23:21:01,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:21:01,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:01,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:21:01,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:21:01,230 INFO L87 Difference]: Start difference. First operand 206 states and 225 transitions. Second operand 14 states. [2020-10-13 23:21:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:02,399 INFO L93 Difference]: Finished difference Result 376 states and 411 transitions. [2020-10-13 23:21:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:21:02,400 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-13 23:21:02,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:02,402 INFO L225 Difference]: With dead ends: 376 [2020-10-13 23:21:02,402 INFO L226 Difference]: Without dead ends: 124 [2020-10-13 23:21:02,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:21:02,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-13 23:21:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-13 23:21:02,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-13 23:21:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2020-10-13 23:21:02,418 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 122 [2020-10-13 23:21:02,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:02,418 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2020-10-13 23:21:02,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:21:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2020-10-13 23:21:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 23:21:02,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:02,421 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:21:02,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:21:02,421 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:02,422 INFO L82 PathProgramCache]: Analyzing trace with hash -140478453, now seen corresponding path program 13 times [2020-10-13 23:21:02,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:02,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6906437] [2020-10-13 23:21:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:02,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:02,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:02,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:02,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:02,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:02,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:07,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:07,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 23:21:07,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:21:07,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:21:07,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:07,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:21:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:21:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 23:21:07,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:07,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:07,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:07,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:07,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:07,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:07,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:07,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:07,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:07,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:07,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:07,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 23:21:07,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6906437] [2020-10-13 23:21:07,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:07,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:21:07,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978169445] [2020-10-13 23:21:07,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:21:07,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:07,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:21:07,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:21:07,631 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand 14 states. [2020-10-13 23:21:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:08,560 INFO L93 Difference]: Finished difference Result 238 states and 266 transitions. [2020-10-13 23:21:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:21:08,562 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-13 23:21:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:08,563 INFO L225 Difference]: With dead ends: 238 [2020-10-13 23:21:08,564 INFO L226 Difference]: Without dead ends: 143 [2020-10-13 23:21:08,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:21:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-13 23:21:08,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-13 23:21:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-13 23:21:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2020-10-13 23:21:08,578 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 122 [2020-10-13 23:21:08,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:08,579 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2020-10-13 23:21:08,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:21:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2020-10-13 23:21:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 23:21:08,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:08,581 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:21:08,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:21:08,581 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:08,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:08,582 INFO L82 PathProgramCache]: Analyzing trace with hash -895665609, now seen corresponding path program 14 times [2020-10-13 23:21:08,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:08,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34232435] [2020-10-13 23:21:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:13,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:16,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:16,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 23:21:16,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7736 [2020-10-13 23:21:16,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:16,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 112 [2020-10-13 23:21:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:21:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 23:21:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:20,820 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-13 23:21:21,081 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-13 23:21:21,309 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-10-13 23:21:21,575 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-13 23:21:21,825 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-13 23:21:22,085 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-13 23:21:22,353 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-13 23:21:22,608 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-13 23:21:22,874 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-10-13 23:21:23,093 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-10-13 23:21:23,332 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-10-13 23:21:23,587 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-13 23:21:23,946 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-10-13 23:21:24,222 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-10-13 23:21:24,492 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-13 23:21:24,776 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-13 23:21:25,057 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2020-10-13 23:21:25,343 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-13 23:21:25,643 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-10-13 23:21:25,969 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2020-10-13 23:21:26,224 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2020-10-13 23:21:27,345 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-13 23:21:27,729 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-10-13 23:21:28,126 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-13 23:21:28,458 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-10-13 23:21:28,768 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-13 23:21:30,949 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-13 23:21:38,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:38,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:38,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:38,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:38,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:38,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:38,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:38,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 16 proven. 259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:21:38,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34232435] [2020-10-13 23:21:38,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:38,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-10-13 23:21:38,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673902999] [2020-10-13 23:21:38,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-13 23:21:38,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:38,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-13 23:21:38,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=7165, Unknown=0, NotChecked=0, Total=7656 [2020-10-13 23:21:38,585 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand 88 states. [2020-10-13 23:21:38,998 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 9 [2020-10-13 23:21:39,526 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 21 [2020-10-13 23:21:43,245 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 50 [2020-10-13 23:21:43,824 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 42 [2020-10-13 23:21:44,798 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2020-10-13 23:21:45,309 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-10-13 23:21:46,182 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 36 [2020-10-13 23:21:47,331 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 52 [2020-10-13 23:21:48,159 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 53 [2020-10-13 23:21:48,678 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2020-10-13 23:21:49,436 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 70 [2020-10-13 23:21:50,049 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-13 23:21:51,164 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 67 [2020-10-13 23:21:53,202 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 78 [2020-10-13 23:21:53,884 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 35 [2020-10-13 23:21:55,273 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 75 [2020-10-13 23:21:55,896 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 33 [2020-10-13 23:21:57,583 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 85 [2020-10-13 23:21:58,095 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-13 23:21:59,439 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2020-10-13 23:22:00,658 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2020-10-13 23:22:01,644 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 38 [2020-10-13 23:22:02,259 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-13 23:22:03,186 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 36 [2020-10-13 23:22:03,784 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-13 23:22:04,486 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 27 [2020-10-13 23:22:05,484 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2020-10-13 23:22:06,643 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 20 [2020-10-13 23:22:09,436 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-10-13 23:22:10,308 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2020-10-13 23:22:11,160 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-13 23:22:13,843 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-10-13 23:22:14,968 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2020-10-13 23:22:16,384 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-13 23:22:18,435 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2020-10-13 23:22:20,015 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2020-10-13 23:22:21,747 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69