/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/Problem19_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:05:22,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:05:22,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:05:23,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:05:23,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:05:23,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:05:23,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:05:23,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:05:23,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:05:23,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:05:23,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:05:23,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:05:23,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:05:23,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:05:23,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:05:23,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:05:23,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:05:23,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:05:23,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:05:23,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:05:23,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:05:23,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:05:23,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:05:23,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:05:23,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:05:23,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:05:23,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:05:23,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:05:23,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:05:23,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:05:23,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:05:23,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:05:23,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:05:23,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:05:23,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:05:23,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:05:23,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:05:23,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:05:23,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:05:23,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:05:23,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:05:23,080 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 23:05:23,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:05:23,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:05:23,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:05:23,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:05:23,107 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:05:23,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:05:23,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:05:23,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:05:23,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:05:23,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:05:23,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:05:23,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:05:23,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:05:23,109 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:05:23,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:05:23,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:05:23,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:05:23,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:05:23,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:05:23,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:05:23,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:05:23,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:05:23,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:05:23,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:05:23,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:05:23,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:05:23,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:05:23,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:05:23,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:05:23,112 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 23:05:23,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:05:23,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:05:23,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:05:23,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:05:23,437 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:05:23,438 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label33.c [2020-10-14 23:05:23,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/748bf4755/737f7edde70f4534bf25ab2f3eaf09bd/FLAG25dc23980 [2020-10-14 23:05:24,375 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:05:24,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label33.c [2020-10-14 23:05:24,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/748bf4755/737f7edde70f4534bf25ab2f3eaf09bd/FLAG25dc23980 [2020-10-14 23:05:24,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/748bf4755/737f7edde70f4534bf25ab2f3eaf09bd [2020-10-14 23:05:24,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:05:24,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:05:24,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:05:24,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:05:24,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:05:24,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:05:24" (1/1) ... [2020-10-14 23:05:24,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35de7d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:24, skipping insertion in model container [2020-10-14 23:05:24,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:05:24" (1/1) ... [2020-10-14 23:05:24,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:05:25,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:05:27,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:05:27,377 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:05:28,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:05:28,592 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:05:28,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:28 WrapperNode [2020-10-14 23:05:28,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:05:28,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:05:28,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:05:28,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:05:28,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:28" (1/1) ... [2020-10-14 23:05:28,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:28" (1/1) ... [2020-10-14 23:05:28,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:28" (1/1) ... [2020-10-14 23:05:28,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:28" (1/1) ... [2020-10-14 23:05:28,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:28" (1/1) ... [2020-10-14 23:05:28,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:28" (1/1) ... [2020-10-14 23:05:29,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:28" (1/1) ... [2020-10-14 23:05:29,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:05:29,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:05:29,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:05:29,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:05:29,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:28" (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 23:05:29,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:05:29,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:05:29,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:05:29,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:05:29,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:05:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:05:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:05:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:05:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:05:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:05:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:05:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:05:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:05:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:05:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:05:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:05:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:05:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:05:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:05:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:05:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:05:41,557 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:05:41,557 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:05:41,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:05:41 BoogieIcfgContainer [2020-10-14 23:05:41,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:05:41,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:05:41,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:05:41,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:05:41,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:05:24" (1/3) ... [2020-10-14 23:05:41,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df43b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:05:41, skipping insertion in model container [2020-10-14 23:05:41,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:28" (2/3) ... [2020-10-14 23:05:41,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df43b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:05:41, skipping insertion in model container [2020-10-14 23:05:41,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:05:41" (3/3) ... [2020-10-14 23:05:41,585 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label33.c [2020-10-14 23:05:41,596 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:05:41,609 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:05:41,623 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:05:41,660 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:05:41,660 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:05:41,661 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:05:41,661 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:05:41,661 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:05:41,661 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:05:41,661 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:05:41,661 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:05:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:05:41,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:05:41,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:05:41,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:05:41,738 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:05:41,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:05:41,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1757729892, now seen corresponding path program 1 times [2020-10-14 23:05:41,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:05:41,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796827681] [2020-10-14 23:05:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:05:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:42,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:42,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:05:42,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:42,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-14 23:05:42,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:42,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:05:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:05:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 23:05:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:05:42,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:05:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:42,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:42,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:42,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:05:42,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:42,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:05:42,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:42,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:42,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:05:42,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:05:42,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:05:42,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:42,575 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 23:05:42,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796827681] [2020-10-14 23:05:42,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:05:42,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:05:42,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050370533] [2020-10-14 23:05:42,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:05:42,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:05:42,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:05:42,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:05:42,603 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:06:03,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:06:03,052 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-14 23:06:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:06:03,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 23:06:03,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:06:03,101 INFO L225 Difference]: With dead ends: 5031 [2020-10-14 23:06:03,102 INFO L226 Difference]: Without dead ends: 3190 [2020-10-14 23:06:03,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 23:06:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-14 23:06:03,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-14 23:06:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-14 23:06:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-14 23:06:03,352 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 47 [2020-10-14 23:06:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:06:03,355 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-14 23:06:03,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:06:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-14 23:06:03,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 23:06:03,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:06:03,369 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, 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] [2020-10-14 23:06:03,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:06:03,370 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:06:03,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:06:03,373 INFO L82 PathProgramCache]: Analyzing trace with hash -2073406109, now seen corresponding path program 1 times [2020-10-14 23:06:03,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:06:03,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938967374] [2020-10-14 23:06:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:06:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:03,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:05,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:05,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:05,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 23:06:05,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:06:05,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2348 [2020-10-14 23:06:05,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:05,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:06:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:06:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 23:06:05,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:06:05,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:06:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:05,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:05,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:06:05,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:06:05,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:06:05,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:05,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:06:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:06:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:06:05,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:05,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:06:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:05,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:05,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:06,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:06,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:06,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:06:06,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:06:06,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-14 23:06:06,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:06,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:06:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:06:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:06:06,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:06:06,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938967374] [2020-10-14 23:06:06,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:06:06,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:06:06,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259077951] [2020-10-14 23:06:06,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:06:06,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:06:06,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:06:06,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:06:06,376 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 6 states. [2020-10-14 23:06:45,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:06:45,012 INFO L93 Difference]: Finished difference Result 9370 states and 14717 transitions. [2020-10-14 23:06:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:06:45,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-14 23:06:45,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:06:45,049 INFO L225 Difference]: With dead ends: 9370 [2020-10-14 23:06:45,050 INFO L226 Difference]: Without dead ends: 6192 [2020-10-14 23:06:45,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:06:45,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2020-10-14 23:06:45,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 6158. [2020-10-14 23:06:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6158 states. [2020-10-14 23:06:45,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6158 states to 6158 states and 8529 transitions. [2020-10-14 23:06:45,242 INFO L78 Accepts]: Start accepts. Automaton has 6158 states and 8529 transitions. Word has length 120 [2020-10-14 23:06:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:06:45,245 INFO L479 AbstractCegarLoop]: Abstraction has 6158 states and 8529 transitions. [2020-10-14 23:06:45,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:06:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 6158 states and 8529 transitions. [2020-10-14 23:06:45,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 23:06:45,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:06:45,250 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, 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] [2020-10-14 23:06:45,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:06:45,251 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:06:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:06:45,251 INFO L82 PathProgramCache]: Analyzing trace with hash -145133407, now seen corresponding path program 1 times [2020-10-14 23:06:45,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:06:45,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226912619] [2020-10-14 23:06:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:06:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:45,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:46,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:46,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 23:06:46,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:06:46,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-14 23:06:46,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:46,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:06:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:06:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 23:06:46,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:46,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:06:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:46,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:46,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:46,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:06:46,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:06:46,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:06:46,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:46,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:46,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:06:46,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:06:46,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:06:46,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:46,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:06:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:46,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:46,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:46,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:46,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:06:46,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:06:46,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 23:06:46,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:46,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:46,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:06:46,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:06:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 23:06:46,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:06:46,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226912619] [2020-10-14 23:06:46,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:06:46,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:06:46,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812276450] [2020-10-14 23:06:46,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:06:46,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:06:46,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:06:46,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:06:46,650 INFO L87 Difference]: Start difference. First operand 6158 states and 8529 transitions. Second operand 7 states. [2020-10-14 23:07:48,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:07:48,305 INFO L93 Difference]: Finished difference Result 29550 states and 42443 transitions. [2020-10-14 23:07:48,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:07:48,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-14 23:07:48,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:07:48,446 INFO L225 Difference]: With dead ends: 29550 [2020-10-14 23:07:48,446 INFO L226 Difference]: Without dead ends: 23398 [2020-10-14 23:07:48,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:07:48,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23398 states. [2020-10-14 23:07:48,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23398 to 23261. [2020-10-14 23:07:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23261 states. [2020-10-14 23:07:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23261 states to 23261 states and 31201 transitions. [2020-10-14 23:07:49,070 INFO L78 Accepts]: Start accepts. Automaton has 23261 states and 31201 transitions. Word has length 120 [2020-10-14 23:07:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:07:49,073 INFO L479 AbstractCegarLoop]: Abstraction has 23261 states and 31201 transitions. [2020-10-14 23:07:49,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:07:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 23261 states and 31201 transitions. [2020-10-14 23:07:49,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 23:07:49,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:07:49,084 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, 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] [2020-10-14 23:07:49,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:07:49,092 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:07:49,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:07:49,093 INFO L82 PathProgramCache]: Analyzing trace with hash -412772582, now seen corresponding path program 1 times [2020-10-14 23:07:49,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:07:49,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100597230] [2020-10-14 23:07:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:07:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:49,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:49,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:49,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 23:07:49,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:07:49,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-14 23:07:49,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:49,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:07:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:07:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 23:07:49,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:07:49,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:07:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:49,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:49,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:49,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:07:49,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:07:49,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:07:49,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:49,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:07:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:07:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:07:49,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:07:49,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:07:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:50,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:50,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:07:50,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:07:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 23:07:50,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:50,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:07:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:07:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:07:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:07:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:07:50,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100597230] [2020-10-14 23:07:50,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:07:50,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:07:50,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127099304] [2020-10-14 23:07:50,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:07:50,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:07:50,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:07:50,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:07:50,203 INFO L87 Difference]: Start difference. First operand 23261 states and 31201 transitions. Second operand 7 states. [2020-10-14 23:08:50,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:08:50,985 INFO L93 Difference]: Finished difference Result 70352 states and 97494 transitions. [2020-10-14 23:08:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:08:50,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-14 23:08:50,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:08:51,209 INFO L225 Difference]: With dead ends: 70352 [2020-10-14 23:08:51,210 INFO L226 Difference]: Without dead ends: 47097 [2020-10-14 23:08:51,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:08:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47097 states. [2020-10-14 23:08:52,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47097 to 46931. [2020-10-14 23:08:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46931 states. [2020-10-14 23:08:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46931 states to 46931 states and 62942 transitions. [2020-10-14 23:08:52,631 INFO L78 Accepts]: Start accepts. Automaton has 46931 states and 62942 transitions. Word has length 128 [2020-10-14 23:08:52,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:08:52,635 INFO L479 AbstractCegarLoop]: Abstraction has 46931 states and 62942 transitions. [2020-10-14 23:08:52,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:08:52,635 INFO L276 IsEmpty]: Start isEmpty. Operand 46931 states and 62942 transitions. [2020-10-14 23:08:52,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-14 23:08:52,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:08:52,647 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, 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, 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 23:08:52,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:08:52,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:08:52,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:08:52,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1729734671, now seen corresponding path program 1 times [2020-10-14 23:08:52,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:08:52,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346512989] [2020-10-14 23:08:52,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:08:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:52,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:52,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:54,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:57,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:57,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 23:08:57,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:08:57,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 23:08:57,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:57,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:57,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:08:57,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 23:08:57,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 23:08:57,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:08:57,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:08:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:57,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:57,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:57,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:08:57,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:57,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:08:57,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:57,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:08:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:08:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:08:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:08:57,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:08:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:58,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:58,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:58,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:08:58,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:58,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 23:08:58,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:58,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:08:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:08:58,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 23:08:58,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:58,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 23:08:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:58,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:58,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:58,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 23:08:58,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:58,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 23:08:58,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:58,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:08:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:08:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 23:08:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:08:58,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346512989] [2020-10-14 23:08:58,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:08:58,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:08:58,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701410222] [2020-10-14 23:08:58,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:08:58,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:08:58,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:08:58,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:08:58,598 INFO L87 Difference]: Start difference. First operand 46931 states and 62942 transitions. Second operand 7 states.