/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/eca-rers2012/Problem17_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:36:52,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:36:52,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:36:52,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:36:52,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:36:52,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:36:52,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:36:52,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:36:52,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:36:52,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:36:52,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:36:52,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:36:52,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:36:52,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:36:52,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:36:52,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:36:52,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:36:52,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:36:52,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:36:52,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:36:52,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:36:52,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:36:52,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:36:52,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:36:52,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:36:52,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:36:52,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:36:52,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:36:52,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:36:52,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:36:52,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:36:52,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:36:52,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:36:52,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:36:52,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:36:52,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:36:52,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:36:52,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:36:52,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:36:52,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:36:52,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:36:52,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:36:52,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:36:52,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:36:52,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:36:52,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:36:52,182 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:36:52,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:36:52,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:36:52,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:36:52,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:36:52,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:36:52,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:36:52,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:36:52,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:36:52,186 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:36:52,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:36:52,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:36:52,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:36:52,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:36:52,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:36:52,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:36:52,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:36:52,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:36:52,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:36:52,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:36:52,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:36:52,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:36:52,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:36:52,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:36:52,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:36:52,194 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:36:52,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:36:52,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:36:52,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:36:52,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:36:52,564 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:36:52,564 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label51.c [2020-10-14 22:36:52,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcdbfca3c/c16f20ae990a4580bccbd2bf226e74d4/FLAGcedc68437 [2020-10-14 22:36:53,462 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:36:53,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label51.c [2020-10-14 22:36:53,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcdbfca3c/c16f20ae990a4580bccbd2bf226e74d4/FLAGcedc68437 [2020-10-14 22:36:53,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcdbfca3c/c16f20ae990a4580bccbd2bf226e74d4 [2020-10-14 22:36:53,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:36:53,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:36:53,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:36:53,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:36:53,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:36:53,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:36:53" (1/1) ... [2020-10-14 22:36:53,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678923a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:36:53, skipping insertion in model container [2020-10-14 22:36:53,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:36:53" (1/1) ... [2020-10-14 22:36:53,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:36:53,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:36:55,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:36:55,089 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:36:55,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:36:55,518 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:36:55,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:36:55 WrapperNode [2020-10-14 22:36:55,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:36:55,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:36:55,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:36:55,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:36:55,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:36:55" (1/1) ... [2020-10-14 22:36:55,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:36:55" (1/1) ... [2020-10-14 22:36:55,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:36:55" (1/1) ... [2020-10-14 22:36:55,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:36:55" (1/1) ... [2020-10-14 22:36:55,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:36:55" (1/1) ... [2020-10-14 22:36:55,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:36:55" (1/1) ... [2020-10-14 22:36:55,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:36:55" (1/1) ... [2020-10-14 22:36:55,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:36:55,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:36:55,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:36:55,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:36:55,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:36:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:36:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:36:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:36:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:36:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:36:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:36:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:36:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:36:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:36:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:36:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:36:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:36:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:36:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:37:05,100 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:37:05,101 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:37:05,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:37:05 BoogieIcfgContainer [2020-10-14 22:37:05,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:37:05,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:37:05,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:37:05,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:37:05,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:36:53" (1/3) ... [2020-10-14 22:37:05,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b02d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:37:05, skipping insertion in model container [2020-10-14 22:37:05,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:36:55" (2/3) ... [2020-10-14 22:37:05,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b02d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:37:05, skipping insertion in model container [2020-10-14 22:37:05,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:37:05" (3/3) ... [2020-10-14 22:37:05,120 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label51.c [2020-10-14 22:37:05,133 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:37:05,143 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:37:05,158 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:37:05,187 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:37:05,187 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:37:05,187 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:37:05,187 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:37:05,188 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:37:05,188 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:37:05,188 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:37:05,188 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:37:05,222 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:37:05,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 22:37:05,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:05,232 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] [2020-10-14 22:37:05,232 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:05,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:05,240 INFO L82 PathProgramCache]: Analyzing trace with hash 480569, now seen corresponding path program 1 times [2020-10-14 22:37:05,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:05,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128977389] [2020-10-14 22:37:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:05,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:05,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:05,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 22:37:05,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:05,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-14 22:37:05,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:05,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:37:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:37:05,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 22:37:05,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:37:06,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:06,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:06,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:06,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:37:06,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:06,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:06,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:06,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:37:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:37:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:37:06,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128977389] [2020-10-14 22:37:06,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:37:06,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:37:06,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969705534] [2020-10-14 22:37:06,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:37:06,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:06,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:37:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:37:06,297 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:37:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:19,051 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 22:37:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:37:19,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-14 22:37:19,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:19,084 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 22:37:19,085 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 22:37:19,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:37:19,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 22:37:19,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 22:37:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 22:37:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 22:37:19,251 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 43 [2020-10-14 22:37:19,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:19,252 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 22:37:19,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:37:19,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 22:37:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 22:37:19,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:19,259 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:37:19,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:37:19,259 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:19,260 INFO L82 PathProgramCache]: Analyzing trace with hash -452916497, now seen corresponding path program 1 times [2020-10-14 22:37:19,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:19,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097268844] [2020-10-14 22:37:19,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:19,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:20,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:20,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:37:20,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:37:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1497 [2020-10-14 22:37:20,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:20,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:37:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:37:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:37:20,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:37:20,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:20,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:20,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:20,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:20,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:37:20,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:20,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:37:20,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:20,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:37:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:21,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:21,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:37:21,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:21,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 22:37:21,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:21,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:37:21,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:37:21,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097268844] [2020-10-14 22:37:21,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:37:21,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:37:21,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327530662] [2020-10-14 22:37:21,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:37:21,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:21,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:37:21,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:37:21,239 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 7 states. [2020-10-14 22:37:36,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:36,753 INFO L93 Difference]: Finished difference Result 2962 states and 4571 transitions. [2020-10-14 22:37:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:37:36,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-14 22:37:36,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:36,833 INFO L225 Difference]: With dead ends: 2962 [2020-10-14 22:37:36,834 INFO L226 Difference]: Without dead ends: 1966 [2020-10-14 22:37:36,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:37:36,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2020-10-14 22:37:36,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1914. [2020-10-14 22:37:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2020-10-14 22:37:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2482 transitions. [2020-10-14 22:37:36,923 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2482 transitions. Word has length 114 [2020-10-14 22:37:36,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:36,923 INFO L479 AbstractCegarLoop]: Abstraction has 1914 states and 2482 transitions. [2020-10-14 22:37:36,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:37:36,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2482 transitions. [2020-10-14 22:37:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 22:37:36,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:36,927 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:37:36,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:37:36,928 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:36,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:36,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1164800257, now seen corresponding path program 1 times [2020-10-14 22:37:36,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:36,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171746171] [2020-10-14 22:37:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:36,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:37,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:37,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 22:37:37,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:37:37,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-14 22:37:37,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:37,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:37:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:37:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:37:37,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:37,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:37,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:37,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:37,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:37:37,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:37,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:37,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:37,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:37,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:37:37,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:37,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:37:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:38,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:38,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:37:38,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:38,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 22:37:38,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:38,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:38,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:37:38,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:37:38,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:37:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:37:38,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171746171] [2020-10-14 22:37:38,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:37:38,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:37:38,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387368826] [2020-10-14 22:37:38,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:37:38,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:38,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:37:38,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:37:38,650 INFO L87 Difference]: Start difference. First operand 1914 states and 2482 transitions. Second operand 8 states. [2020-10-14 22:37:50,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:50,798 INFO L93 Difference]: Finished difference Result 4359 states and 5526 transitions. [2020-10-14 22:37:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:37:50,800 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-14 22:37:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:50,812 INFO L225 Difference]: With dead ends: 4359 [2020-10-14 22:37:50,813 INFO L226 Difference]: Without dead ends: 2420 [2020-10-14 22:37:50,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:37:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2020-10-14 22:37:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2352. [2020-10-14 22:37:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2352 states. [2020-10-14 22:37:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 2933 transitions. [2020-10-14 22:37:50,891 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 2933 transitions. Word has length 117 [2020-10-14 22:37:50,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:50,892 INFO L479 AbstractCegarLoop]: Abstraction has 2352 states and 2933 transitions. [2020-10-14 22:37:50,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:37:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 2933 transitions. [2020-10-14 22:37:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 22:37:50,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:50,895 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:37:50,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:37:50,895 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:50,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:50,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1354404721, now seen corresponding path program 1 times [2020-10-14 22:37:50,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:50,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858503505] [2020-10-14 22:37:50,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:50,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:51,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:51,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 22:37:51,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:51,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-14 22:37:51,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:51,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:51,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:51,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:37:51,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 22:37:51,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 22:37:51,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:51,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:51,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:51,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:51,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:37:51,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:51,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:37:51,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:51,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:37:51,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:51,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:37:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:51,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:51,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:51,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:37:51,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:51,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:37:51,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:51,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:37:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:37:51,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858503505] [2020-10-14 22:37:51,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:37:51,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:37:51,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725669124] [2020-10-14 22:37:51,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:37:51,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:51,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:37:51,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:37:51,505 INFO L87 Difference]: Start difference. First operand 2352 states and 2933 transitions. Second operand 5 states. [2020-10-14 22:38:06,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:06,326 INFO L93 Difference]: Finished difference Result 5171 states and 6868 transitions. [2020-10-14 22:38:06,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:38:06,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-14 22:38:06,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:06,353 INFO L225 Difference]: With dead ends: 5171 [2020-10-14 22:38:06,354 INFO L226 Difference]: Without dead ends: 3258 [2020-10-14 22:38:06,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:38:06,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2020-10-14 22:38:06,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 3254. [2020-10-14 22:38:06,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3254 states. [2020-10-14 22:38:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 4121 transitions. [2020-10-14 22:38:06,488 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 4121 transitions. Word has length 130 [2020-10-14 22:38:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:06,491 INFO L479 AbstractCegarLoop]: Abstraction has 3254 states and 4121 transitions. [2020-10-14 22:38:06,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:38:06,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 4121 transitions. [2020-10-14 22:38:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 22:38:06,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:06,502 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:38:06,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:38:06,503 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:06,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1621371175, now seen corresponding path program 1 times [2020-10-14 22:38:06,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:06,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128715090] [2020-10-14 22:38:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:06,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:07,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:09,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:09,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 22:38:09,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:38:09,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2710 [2020-10-14 22:38:09,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:09,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:09,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:38:09,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:38:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 22:38:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:38:09,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:09,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:09,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:09,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:09,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:09,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:38:09,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:09,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:09,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:09,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:09,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:38:09,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:38:09,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:09,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:09,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:09,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:38:09,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:09,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 22:38:09,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:09,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:38:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:38:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:09,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:38:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:10,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:10,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:10,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:38:10,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:10,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 22:38:10,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:10,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:10,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:10,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:38:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:38:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 6 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 22:38:10,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128715090] [2020-10-14 22:38:10,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:38:10,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:38:10,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049547778] [2020-10-14 22:38:10,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:38:10,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:10,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:38:10,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:38:10,340 INFO L87 Difference]: Start difference. First operand 3254 states and 4121 transitions. Second operand 8 states. [2020-10-14 22:38:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:35,430 INFO L93 Difference]: Finished difference Result 10651 states and 14219 transitions. [2020-10-14 22:38:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:38:35,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-10-14 22:38:35,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:35,487 INFO L225 Difference]: With dead ends: 10651 [2020-10-14 22:38:35,487 INFO L226 Difference]: Without dead ends: 7381 [2020-10-14 22:38:35,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:38:35,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7381 states. [2020-10-14 22:38:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7381 to 7336. [2020-10-14 22:38:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7336 states. [2020-10-14 22:38:35,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7336 states to 7336 states and 9196 transitions. [2020-10-14 22:38:35,774 INFO L78 Accepts]: Start accepts. Automaton has 7336 states and 9196 transitions. Word has length 201 [2020-10-14 22:38:35,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:35,776 INFO L479 AbstractCegarLoop]: Abstraction has 7336 states and 9196 transitions. [2020-10-14 22:38:35,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:38:35,776 INFO L276 IsEmpty]: Start isEmpty. Operand 7336 states and 9196 transitions. [2020-10-14 22:38:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-14 22:38:35,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:35,784 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:38:35,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:38:35,784 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:35,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:35,785 INFO L82 PathProgramCache]: Analyzing trace with hash 852039102, now seen corresponding path program 1 times [2020-10-14 22:38:35,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:35,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621306263] [2020-10-14 22:38:35,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:35,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:36,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:39,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:40,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:40,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-14 22:38:40,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:38:40,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4965 [2020-10-14 22:38:40,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:40,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:38:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:38:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 22:38:40,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:40,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:40,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:40,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:40,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:40,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:40,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:38:40,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:40,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:40,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:41,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:41,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:41,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:38:41,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 22:38:41,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:41,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:38:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:41,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:38:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:41,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:41,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:41,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:41,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:38:41,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:38:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 22:38:41,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:41,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:41,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:38:41,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:41,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:38:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:41,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:41,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 22:38:41,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:41,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 22:38:41,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:41,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:38:41,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 256 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 22:38:41,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621306263] [2020-10-14 22:38:41,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:38:41,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:38:41,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285406932] [2020-10-14 22:38:41,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:38:41,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:41,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:38:41,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:38:41,840 INFO L87 Difference]: Start difference. First operand 7336 states and 9196 transitions. Second operand 8 states. [2020-10-14 22:38:57,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:57,004 INFO L93 Difference]: Finished difference Result 15195 states and 19535 transitions. [2020-10-14 22:38:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:38:57,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 293 [2020-10-14 22:38:57,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:57,050 INFO L225 Difference]: With dead ends: 15195 [2020-10-14 22:38:57,050 INFO L226 Difference]: Without dead ends: 8298 [2020-10-14 22:38:57,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:38:57,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2020-10-14 22:38:57,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 7817. [2020-10-14 22:38:57,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7817 states. [2020-10-14 22:38:57,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7817 states to 7817 states and 9911 transitions. [2020-10-14 22:38:57,292 INFO L78 Accepts]: Start accepts. Automaton has 7817 states and 9911 transitions. Word has length 293 [2020-10-14 22:38:57,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:57,292 INFO L479 AbstractCegarLoop]: Abstraction has 7817 states and 9911 transitions. [2020-10-14 22:38:57,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:38:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 7817 states and 9911 transitions. [2020-10-14 22:38:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-14 22:38:57,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:57,300 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:38:57,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:38:57,301 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:57,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:57,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1658126955, now seen corresponding path program 1 times [2020-10-14 22:38:57,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:57,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297388013] [2020-10-14 22:38:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:57,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:59,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:01,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:01,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-14 22:39:01,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:39:01,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4329 [2020-10-14 22:39:01,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:01,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:01,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:01,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:39:01,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:39:01,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:01,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:01,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:01,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:01,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:01,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:01,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:39:01,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:01,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:01,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:01,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:01,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:02,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:02,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:39:02,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 22:39:02,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:02,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:39:02,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:02,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:39:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:02,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:02,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:02,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:39:02,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:02,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 22:39:02,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:02,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:02,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:39:02,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:02,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 22:39:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:02,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:02,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:02,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:39:02,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:02,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 22:39:02,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:02,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:39:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:02,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 196 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:39:02,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297388013] [2020-10-14 22:39:02,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:02,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:39:02,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782372172] [2020-10-14 22:39:02,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:39:02,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:02,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:39:02,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:39:02,701 INFO L87 Difference]: Start difference. First operand 7817 states and 9911 transitions. Second operand 7 states. [2020-10-14 22:39:25,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:25,925 INFO L93 Difference]: Finished difference Result 19124 states and 25412 transitions. [2020-10-14 22:39:25,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:39:25,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-14 22:39:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:25,990 INFO L225 Difference]: With dead ends: 19124 [2020-10-14 22:39:25,991 INFO L226 Difference]: Without dead ends: 10800 [2020-10-14 22:39:26,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:39:26,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10800 states. [2020-10-14 22:39:26,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10800 to 10719. [2020-10-14 22:39:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10719 states. [2020-10-14 22:39:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 13314 transitions. [2020-10-14 22:39:26,366 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 13314 transitions. Word has length 303 [2020-10-14 22:39:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:26,367 INFO L479 AbstractCegarLoop]: Abstraction has 10719 states and 13314 transitions. [2020-10-14 22:39:26,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:39:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 13314 transitions. [2020-10-14 22:39:26,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-14 22:39:26,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:26,377 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:39:26,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:39:26,377 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:26,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:26,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1791694052, now seen corresponding path program 1 times [2020-10-14 22:39:26,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:26,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011305369] [2020-10-14 22:39:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:26,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:26,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:27,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:31,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:31,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:31,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-14 22:39:31,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:39:31,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 22:39:31,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:31,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:31,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:31,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:39:31,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:39:31,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:31,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:31,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:31,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:31,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:31,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:39:31,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:31,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:31,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:31,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:31,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:31,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:31,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:39:31,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:31,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 22:39:31,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:31,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:31,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:39:31,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:31,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:39:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:32,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:32,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:39:32,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:32,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-14 22:39:32,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:32,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:39:32,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:39:32,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:39:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:32,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:32,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:32,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:39:32,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 22:39:32,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:32,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:39:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 196 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:39:32,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011305369] [2020-10-14 22:39:32,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:32,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:39:32,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312576501] [2020-10-14 22:39:32,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:39:32,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:32,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:39:32,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:39:32,880 INFO L87 Difference]: Start difference. First operand 10719 states and 13314 transitions. Second operand 7 states. [2020-10-14 22:39:37,871 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-10-14 22:39:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:50,885 INFO L93 Difference]: Finished difference Result 22536 states and 28117 transitions. [2020-10-14 22:39:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:39:50,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-14 22:39:50,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:50,927 INFO L225 Difference]: With dead ends: 22536 [2020-10-14 22:39:50,927 INFO L226 Difference]: Without dead ends: 12256 [2020-10-14 22:39:50,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:39:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12256 states. [2020-10-14 22:39:51,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12256 to 12104. [2020-10-14 22:39:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12104 states. [2020-10-14 22:39:51,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12104 states to 12104 states and 14930 transitions. [2020-10-14 22:39:51,206 INFO L78 Accepts]: Start accepts. Automaton has 12104 states and 14930 transitions. Word has length 310 [2020-10-14 22:39:51,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:51,207 INFO L479 AbstractCegarLoop]: Abstraction has 12104 states and 14930 transitions. [2020-10-14 22:39:51,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:39:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 12104 states and 14930 transitions. [2020-10-14 22:39:51,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 22:39:51,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:51,215 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:39:51,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:39:51,215 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:51,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:51,216 INFO L82 PathProgramCache]: Analyzing trace with hash 788755708, now seen corresponding path program 1 times [2020-10-14 22:39:51,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:51,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014672762] [2020-10-14 22:39:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:51,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:54,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:56,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:56,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-14 22:39:56,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:39:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 22:39:56,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:56,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:39:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:39:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:39:56,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:56,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:56,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:56,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:56,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:39:56,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:56,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:39:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:56,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:56,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:56,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:56,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:39:56,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:56,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 22:39:56,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:56,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:39:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:39:56,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:56,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:39:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:57,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:57,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:39:57,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:57,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 22:39:57,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:57,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:39:57,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:57,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:39:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:57,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:57,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:39:57,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:57,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 22:39:57,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:57,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:57,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:39:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:57,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 113 proven. 225 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:39:57,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014672762] [2020-10-14 22:39:57,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:57,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:39:57,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41002188] [2020-10-14 22:39:57,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:39:57,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:57,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:39:57,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:39:57,679 INFO L87 Difference]: Start difference. First operand 12104 states and 14930 transitions. Second operand 10 states. [2020-10-14 22:39:57,831 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-14 22:40:21,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:40:21,567 INFO L93 Difference]: Finished difference Result 24532 states and 30614 transitions. [2020-10-14 22:40:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 22:40:21,570 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 334 [2020-10-14 22:40:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:40:21,614 INFO L225 Difference]: With dead ends: 24532 [2020-10-14 22:40:21,615 INFO L226 Difference]: Without dead ends: 12867 [2020-10-14 22:40:21,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-14 22:40:21,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2020-10-14 22:40:21,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12598. [2020-10-14 22:40:21,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12598 states. [2020-10-14 22:40:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12598 states to 12598 states and 15501 transitions. [2020-10-14 22:40:21,916 INFO L78 Accepts]: Start accepts. Automaton has 12598 states and 15501 transitions. Word has length 334 [2020-10-14 22:40:21,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:40:21,917 INFO L479 AbstractCegarLoop]: Abstraction has 12598 states and 15501 transitions. [2020-10-14 22:40:21,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:40:21,917 INFO L276 IsEmpty]: Start isEmpty. Operand 12598 states and 15501 transitions. [2020-10-14 22:40:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-14 22:40:21,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:40:21,927 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:40:21,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:40:21,927 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:40:21,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:40:21,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1027323004, now seen corresponding path program 1 times [2020-10-14 22:40:21,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:40:21,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114906510] [2020-10-14 22:40:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:40:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:22,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:27,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:27,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-14 22:40:27,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:40:27,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 22:40:27,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:27,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:27,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:27,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:40:27,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:40:27,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:27,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:40:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:27,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:27,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:27,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:40:27,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:27,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:40:27,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:27,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:40:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:40:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:27,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:40:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:27,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:27,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:27,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:40:27,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:27,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 22:40:27,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:27,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:27,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:40:27,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:27,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:40:27,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:27,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:40:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:27,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:27,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:27,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:40:27,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:27,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 22:40:27,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:27,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:40:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:40:27,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:40:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:27,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:27,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:27,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:40:27,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:27,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 22:40:27,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:27,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:27,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:27,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:27,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:40:27,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:27,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-14 22:40:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:27,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:27,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:27,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:40:27,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:27,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:40:27,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:27,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:40:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:40:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:40:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 324 proven. 70 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 22:40:27,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114906510] [2020-10-14 22:40:27,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:40:27,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:40:27,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729526209] [2020-10-14 22:40:27,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:40:27,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:40:27,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:40:27,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:40:27,756 INFO L87 Difference]: Start difference. First operand 12598 states and 15501 transitions. Second operand 7 states.