/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/Problem12_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:09:24,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:09:24,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:09:24,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:09:24,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:09:24,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:09:24,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:09:24,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:09:24,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:09:24,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:09:24,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:09:24,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:09:24,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:09:24,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:09:24,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:09:24,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:09:24,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:09:24,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:09:24,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:09:24,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:09:24,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:09:24,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:09:24,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:09:24,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:09:24,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:09:24,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:09:24,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:09:24,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:09:24,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:09:24,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:09:24,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:09:24,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:09:24,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:09:24,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:09:24,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:09:24,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:09:24,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:09:24,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:09:24,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:09:24,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:09:24,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:09:24,312 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 21:09:24,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:09:24,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:09:24,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:09:24,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:09:24,339 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:09:24,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:09:24,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:09:24,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:09:24,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:09:24,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:09:24,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:09:24,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:09:24,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:09:24,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:09:24,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:09:24,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:09:24,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:09:24,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:09:24,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:09:24,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:09:24,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:09:24,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:09:24,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:09:24,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:09:24,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:09:24,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:09:24,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:09:24,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:09:24,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:09:24,345 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 21:09:24,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:09:24,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:09:24,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:09:24,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:09:24,744 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:09:24,745 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label14.c [2020-10-14 21:09:24,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/504d7d893/102305043b7a46e09161f71471130a46/FLAG46969b6d6 [2020-10-14 21:09:25,769 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:09:25,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label14.c [2020-10-14 21:09:25,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/504d7d893/102305043b7a46e09161f71471130a46/FLAG46969b6d6 [2020-10-14 21:09:26,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/504d7d893/102305043b7a46e09161f71471130a46 [2020-10-14 21:09:26,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:09:26,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:09:26,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:09:26,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:09:26,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:09:26,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:09:26" (1/1) ... [2020-10-14 21:09:26,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4024b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:26, skipping insertion in model container [2020-10-14 21:09:26,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:09:26" (1/1) ... [2020-10-14 21:09:26,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:09:26,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:09:28,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:09:28,580 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:09:29,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:09:29,341 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:09:29,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:29 WrapperNode [2020-10-14 21:09:29,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:09:29,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:09:29,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:09:29,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:09:29,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:29" (1/1) ... [2020-10-14 21:09:29,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:29" (1/1) ... [2020-10-14 21:09:29,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:29" (1/1) ... [2020-10-14 21:09:29,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:29" (1/1) ... [2020-10-14 21:09:29,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:29" (1/1) ... [2020-10-14 21:09:29,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:29" (1/1) ... [2020-10-14 21:09:29,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:29" (1/1) ... [2020-10-14 21:09:29,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:09:29,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:09:29,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:09:29,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:09:29,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:09:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:09:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:09:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:09:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:09:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:09:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:09:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:09:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:09:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:09:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:09:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:09:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:09:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:09:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:09:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:09:29,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:09:29,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:09:34,861 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:09:34,862 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:09:34,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:09:34 BoogieIcfgContainer [2020-10-14 21:09:34,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:09:34,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:09:34,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:09:34,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:09:34,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:09:26" (1/3) ... [2020-10-14 21:09:34,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef309d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:09:34, skipping insertion in model container [2020-10-14 21:09:34,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:29" (2/3) ... [2020-10-14 21:09:34,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef309d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:09:34, skipping insertion in model container [2020-10-14 21:09:34,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:09:34" (3/3) ... [2020-10-14 21:09:34,887 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label14.c [2020-10-14 21:09:34,902 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:09:34,917 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:09:34,936 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:09:34,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:09:34,974 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:09:34,974 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:09:34,974 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:09:34,974 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:09:34,974 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:09:34,975 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:09:34,975 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:09:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:09:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 21:09:35,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:35,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:09:35,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:35,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:35,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1880403285, now seen corresponding path program 1 times [2020-10-14 21:09:35,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:35,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640539456] [2020-10-14 21:09:35,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:35,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:35,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 21:09:35,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:35,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-14 21:09:35,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:35,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:09:35,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:09:35,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 21:09:35,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:09:35,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:35,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:35,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:35,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:35,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:35,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 21:09:35,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:35,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:09:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:35,985 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 21:09:35,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640539456] [2020-10-14 21:09:35,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:09:35,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:09:36,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915363131] [2020-10-14 21:09:36,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:09:36,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:36,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:09:36,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:09:36,048 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 21:09:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:51,000 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2020-10-14 21:09:51,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:09:51,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-14 21:09:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:51,039 INFO L225 Difference]: With dead ends: 3253 [2020-10-14 21:09:51,039 INFO L226 Difference]: Without dead ends: 2346 [2020-10-14 21:09:51,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:09:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-14 21:09:51,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-14 21:09:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-14 21:09:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2020-10-14 21:09:51,261 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 54 [2020-10-14 21:09:51,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:51,262 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2020-10-14 21:09:51,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:09:51,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2020-10-14 21:09:51,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 21:09:51,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:51,270 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, 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] [2020-10-14 21:09:51,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:09:51,271 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:51,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:51,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1159987324, now seen corresponding path program 1 times [2020-10-14 21:09:51,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:51,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198017403] [2020-10-14 21:09:51,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:51,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:52,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:53,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:53,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 21:09:53,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:09:53,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1744 [2020-10-14 21:09:53,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:53,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:09:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:09:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 21:09:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 21:09:53,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:53,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:53,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:53,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:53,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:53,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:09:53,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:53,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:09:53,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:53,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:53,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:53,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 21:09:53,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:09:53,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-14 21:09:53,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:53,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:09:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:09:53,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198017403] [2020-10-14 21:09:53,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:53,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:09:53,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297452051] [2020-10-14 21:09:53,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:09:53,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:53,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:09:53,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:09:53,680 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand 6 states. [2020-10-14 21:10:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:04,965 INFO L93 Difference]: Finished difference Result 7032 states and 11659 transitions. [2020-10-14 21:10:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:10:04,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-10-14 21:10:04,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:05,003 INFO L225 Difference]: With dead ends: 7032 [2020-10-14 21:10:05,003 INFO L226 Difference]: Without dead ends: 4707 [2020-10-14 21:10:05,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 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 21:10:05,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2020-10-14 21:10:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 4689. [2020-10-14 21:10:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4689 states. [2020-10-14 21:10:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6768 transitions. [2020-10-14 21:10:05,186 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6768 transitions. Word has length 132 [2020-10-14 21:10:05,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:05,190 INFO L479 AbstractCegarLoop]: Abstraction has 4689 states and 6768 transitions. [2020-10-14 21:10:05,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:10:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6768 transitions. [2020-10-14 21:10:05,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 21:10:05,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:05,204 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:10:05,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:10:05,205 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:05,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:05,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1915529153, now seen corresponding path program 1 times [2020-10-14 21:10:05,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:05,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168195959] [2020-10-14 21:10:05,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:06,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:10,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:10,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 21:10:10,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:10:10,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 21:10:10,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:10,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:10:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:10:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 21:10:10,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:10,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:10,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:10,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:10,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:10,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:10,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:10:10,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:10,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:10,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:10,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:10,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:10:10,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:10,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:10,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:10,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:10,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:10,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:10:10,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:10:10,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 21:10:10,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:10,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:10,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:10,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:10,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:10:10,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:10,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 21:10:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:10,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:10,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:10:10,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 21:10:10,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:10,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:10:10,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 95 proven. 68 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:10:10,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168195959] [2020-10-14 21:10:10,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:10,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:10:10,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845151593] [2020-10-14 21:10:11,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:10:11,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:11,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:10:11,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:10:11,008 INFO L87 Difference]: Start difference. First operand 4689 states and 6768 transitions. Second operand 9 states. [2020-10-14 21:10:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:27,812 INFO L93 Difference]: Finished difference Result 14701 states and 23148 transitions. [2020-10-14 21:10:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 21:10:27,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2020-10-14 21:10:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:27,879 INFO L225 Difference]: With dead ends: 14701 [2020-10-14 21:10:27,879 INFO L226 Difference]: Without dead ends: 10018 [2020-10-14 21:10:27,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-14 21:10:27,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10018 states. [2020-10-14 21:10:28,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10018 to 9606. [2020-10-14 21:10:28,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9606 states. [2020-10-14 21:10:28,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9606 states to 9606 states and 12661 transitions. [2020-10-14 21:10:28,345 INFO L78 Accepts]: Start accepts. Automaton has 9606 states and 12661 transitions. Word has length 206 [2020-10-14 21:10:28,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:28,346 INFO L479 AbstractCegarLoop]: Abstraction has 9606 states and 12661 transitions. [2020-10-14 21:10:28,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:10:28,347 INFO L276 IsEmpty]: Start isEmpty. Operand 9606 states and 12661 transitions. [2020-10-14 21:10:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 21:10:28,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:28,352 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, 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, 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 21:10:28,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:10:28,353 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:28,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:28,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1497466029, now seen corresponding path program 1 times [2020-10-14 21:10:28,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:28,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405768178] [2020-10-14 21:10:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:28,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:29,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:32,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:32,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 21:10:32,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:10:32,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3954 [2020-10-14 21:10:32,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:32,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:32,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 21:10:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:10:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:10:32,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:32,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:32,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:32,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:32,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:10:32,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:32,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:32,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:10:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:32,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:32,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:10:32,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 21:10:32,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:32,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:10:32,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:10:32,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 21:10:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:32,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:32,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:32,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:10:32,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:32,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 21:10:32,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:32,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:10:32,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:33,013 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:10:33,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405768178] [2020-10-14 21:10:33,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:33,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:10:33,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507292029] [2020-10-14 21:10:33,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:10:33,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:33,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:10:33,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:10:33,021 INFO L87 Difference]: Start difference. First operand 9606 states and 12661 transitions. Second operand 7 states. [2020-10-14 21:10:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:49,072 INFO L93 Difference]: Finished difference Result 24116 states and 33477 transitions. [2020-10-14 21:10:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:10:49,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-10-14 21:10:49,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:49,162 INFO L225 Difference]: With dead ends: 24116 [2020-10-14 21:10:49,162 INFO L226 Difference]: Without dead ends: 14516 [2020-10-14 21:10:49,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:10:49,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14516 states. [2020-10-14 21:10:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14516 to 14355. [2020-10-14 21:10:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14355 states. [2020-10-14 21:10:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14355 states to 14355 states and 18046 transitions. [2020-10-14 21:10:49,770 INFO L78 Accepts]: Start accepts. Automaton has 14355 states and 18046 transitions. Word has length 212 [2020-10-14 21:10:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:49,776 INFO L479 AbstractCegarLoop]: Abstraction has 14355 states and 18046 transitions. [2020-10-14 21:10:49,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:10:49,776 INFO L276 IsEmpty]: Start isEmpty. Operand 14355 states and 18046 transitions. [2020-10-14 21:10:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 21:10:49,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:49,782 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:10:49,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:10:49,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:49,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:49,784 INFO L82 PathProgramCache]: Analyzing trace with hash 901993440, now seen corresponding path program 1 times [2020-10-14 21:10:49,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:49,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602107102] [2020-10-14 21:10:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:49,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:50,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:53,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:53,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 21:10:53,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:10:53,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3638 [2020-10-14 21:10:53,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:53,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:10:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:10:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-14 21:10:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:53,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:53,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:53,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:53,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:53,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:10:53,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:53,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:10:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:10:53,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:53,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:53,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:10:53,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:10:53,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 21:10:53,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:53,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:10:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:10:53,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 21:10:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:53,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:54,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:54,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:10:54,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:54,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 21:10:54,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:54,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:10:54,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 95 proven. 80 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:10:54,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602107102] [2020-10-14 21:10:54,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:54,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:10:54,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637334579] [2020-10-14 21:10:54,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:10:54,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:54,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:10:54,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:10:54,340 INFO L87 Difference]: Start difference. First operand 14355 states and 18046 transitions. Second operand 9 states. [2020-10-14 21:11:09,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:11:09,671 INFO L93 Difference]: Finished difference Result 30031 states and 39554 transitions. [2020-10-14 21:11:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:11:09,675 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 225 [2020-10-14 21:11:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:11:09,721 INFO L225 Difference]: With dead ends: 30031 [2020-10-14 21:11:09,721 INFO L226 Difference]: Without dead ends: 13315 [2020-10-14 21:11:09,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:11:09,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13315 states. [2020-10-14 21:11:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13315 to 11365. [2020-10-14 21:11:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11365 states. [2020-10-14 21:11:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11365 states to 11365 states and 14674 transitions. [2020-10-14 21:11:10,083 INFO L78 Accepts]: Start accepts. Automaton has 11365 states and 14674 transitions. Word has length 225 [2020-10-14 21:11:10,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:11:10,083 INFO L479 AbstractCegarLoop]: Abstraction has 11365 states and 14674 transitions. [2020-10-14 21:11:10,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:11:10,084 INFO L276 IsEmpty]: Start isEmpty. Operand 11365 states and 14674 transitions. [2020-10-14 21:11:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-14 21:11:10,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:11:10,089 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:10,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:11:10,090 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:11:10,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:11:10,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2111470586, now seen corresponding path program 1 times [2020-10-14 21:11:10,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:11:10,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903523510] [2020-10-14 21:11:10,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:11:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:10,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:10,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:12,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:12,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:11:12,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:11:12,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2733 [2020-10-14 21:11:12,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:12,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:12,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:11:12,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:11:12,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:11:12,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:13,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:11:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:13,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:13,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:11:13,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:11:13,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:13,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:11:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:11:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:13,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:11:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:13,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:13,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:13,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:11:13,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:13,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 21:11:13,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:13,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:11:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:11:13,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:13,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:11:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:13,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:13,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:11:13,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:13,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 21:11:13,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:13,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:13,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:11:13,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 21:11:13,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:11:13,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:11:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 94 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:11:13,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903523510] [2020-10-14 21:11:13,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:11:13,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:11:13,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876430000] [2020-10-14 21:11:13,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:11:13,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:11:13,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:11:13,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:11:13,865 INFO L87 Difference]: Start difference. First operand 11365 states and 14674 transitions. Second operand 7 states. [2020-10-14 21:11:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:11:27,753 INFO L93 Difference]: Finished difference Result 27088 states and 35158 transitions. [2020-10-14 21:11:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:11:27,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-14 21:11:27,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:11:27,797 INFO L225 Difference]: With dead ends: 27088 [2020-10-14 21:11:27,797 INFO L226 Difference]: Without dead ends: 16496 [2020-10-14 21:11:27,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:11:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16496 states. [2020-10-14 21:11:28,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16496 to 16179. [2020-10-14 21:11:28,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16179 states. [2020-10-14 21:11:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16179 states to 16179 states and 20032 transitions. [2020-10-14 21:11:28,179 INFO L78 Accepts]: Start accepts. Automaton has 16179 states and 20032 transitions. Word has length 275 [2020-10-14 21:11:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:11:28,180 INFO L479 AbstractCegarLoop]: Abstraction has 16179 states and 20032 transitions. [2020-10-14 21:11:28,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:11:28,180 INFO L276 IsEmpty]: Start isEmpty. Operand 16179 states and 20032 transitions. [2020-10-14 21:11:28,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-14 21:11:28,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:11:28,185 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:28,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:11:28,186 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:11:28,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:11:28,186 INFO L82 PathProgramCache]: Analyzing trace with hash 858191561, now seen corresponding path program 1 times [2020-10-14 21:11:28,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:11:28,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76030961] [2020-10-14 21:11:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:11:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:28,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:28,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 21:11:28,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-14 21:11:28,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:28,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-14 21:11:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 21:11:28,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:28,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:11:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:28,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:28,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:11:28,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:28,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:11:28,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:28,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:11:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:11:28,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:28,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:11:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:28,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:28,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:28,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:11:28,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:28,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 21:11:28,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:28,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:11:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:11:28,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:11:29,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:11:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:29,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:29,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:11:29,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:29,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 21:11:29,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:29,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:11:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:29,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:11:29,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:11:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 21:11:29,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76030961] [2020-10-14 21:11:29,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:11:29,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:11:29,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172305221] [2020-10-14 21:11:29,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:11:29,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:11:29,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:11:29,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:11:29,255 INFO L87 Difference]: Start difference. First operand 16179 states and 20032 transitions. Second operand 5 states. [2020-10-14 21:11:43,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:11:43,019 INFO L93 Difference]: Finished difference Result 36342 states and 47283 transitions. [2020-10-14 21:11:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:11:43,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-14 21:11:43,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:11:43,071 INFO L225 Difference]: With dead ends: 36342 [2020-10-14 21:11:43,071 INFO L226 Difference]: Without dead ends: 20936 [2020-10-14 21:11:43,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:11:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20936 states. [2020-10-14 21:11:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20936 to 20890. [2020-10-14 21:11:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20890 states. [2020-10-14 21:11:43,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20890 states to 20890 states and 25821 transitions. [2020-10-14 21:11:43,478 INFO L78 Accepts]: Start accepts. Automaton has 20890 states and 25821 transitions. Word has length 302 [2020-10-14 21:11:43,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:11:43,478 INFO L479 AbstractCegarLoop]: Abstraction has 20890 states and 25821 transitions. [2020-10-14 21:11:43,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:11:43,479 INFO L276 IsEmpty]: Start isEmpty. Operand 20890 states and 25821 transitions. [2020-10-14 21:11:43,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-14 21:11:43,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:11:43,489 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, 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, 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] [2020-10-14 21:11:43,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:11:43,489 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:11:43,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:11:43,490 INFO L82 PathProgramCache]: Analyzing trace with hash -645000463, now seen corresponding path program 1 times [2020-10-14 21:11:43,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:11:43,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775611769] [2020-10-14 21:11:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:11:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:43,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:43,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:46,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:46,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-14 21:11:46,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:11:46,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2611 [2020-10-14 21:11:46,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:46,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:11:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:11:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:11:46,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:11:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:46,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:46,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:46,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:11:46,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:46,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:11:46,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:46,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:11:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:11:46,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:46,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:11:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:46,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:46,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:46,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:11:46,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:46,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 21:11:46,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:46,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:46,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:11:46,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:11:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:46,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:11:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:46,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:46,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:46,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:11:46,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:46,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 21:11:46,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:46,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:11:46,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:11:46,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:46,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-14 21:11:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:46,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:46,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:46,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:11:46,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:46,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 21:11:46,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:46,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:11:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 21:11:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:11:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:11:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 263 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:11:47,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775611769] [2020-10-14 21:11:47,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:11:47,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:11:47,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001329364] [2020-10-14 21:11:47,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:11:47,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:11:47,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:11:47,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:11:47,255 INFO L87 Difference]: Start difference. First operand 20890 states and 25821 transitions. Second operand 7 states. [2020-10-14 21:12:05,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:12:05,092 INFO L93 Difference]: Finished difference Result 56616 states and 73825 transitions. [2020-10-14 21:12:05,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:12:05,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-10-14 21:12:05,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:12:05,191 INFO L225 Difference]: With dead ends: 56616 [2020-10-14 21:12:05,191 INFO L226 Difference]: Without dead ends: 36499 [2020-10-14 21:12:05,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:12:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36499 states. [2020-10-14 21:12:05,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36499 to 36348. [2020-10-14 21:12:05,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36348 states. [2020-10-14 21:12:05,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36348 states to 36348 states and 46147 transitions. [2020-10-14 21:12:05,936 INFO L78 Accepts]: Start accepts. Automaton has 36348 states and 46147 transitions. Word has length 393 [2020-10-14 21:12:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:12:05,939 INFO L479 AbstractCegarLoop]: Abstraction has 36348 states and 46147 transitions. [2020-10-14 21:12:05,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:12:05,939 INFO L276 IsEmpty]: Start isEmpty. Operand 36348 states and 46147 transitions. [2020-10-14 21:12:05,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-14 21:12:05,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:12:05,961 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, 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, 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] [2020-10-14 21:12:05,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:12:05,962 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:12:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:12:05,962 INFO L82 PathProgramCache]: Analyzing trace with hash 503052457, now seen corresponding path program 1 times [2020-10-14 21:12:05,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:12:05,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112023955] [2020-10-14 21:12:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:12:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:06,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:06,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:10,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:10,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-14 21:12:10,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:12:10,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4780 [2020-10-14 21:12:10,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:10,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:12:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:12:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 21:12:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:10,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:12:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:10,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:10,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:10,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:12:10,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:12:10,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:10,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:12:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:12:10,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:12:11,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:12:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:11,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:11,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:12:11,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:11,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 21:12:11,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:11,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:12:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:12:11,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:11,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:12:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:11,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:11,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:11,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:12:11,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:11,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 21:12:11,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:11,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:12:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:12:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:12:11,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:12:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-14 21:12:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:11,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:11,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:12:11,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 21:12:11,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:11,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:11,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:12:11,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:12:11,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:12:11,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 333 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 21:12:11,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112023955] [2020-10-14 21:12:11,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:12:11,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:12:11,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000253438] [2020-10-14 21:12:11,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:12:11,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:12:11,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:12:11,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:12:11,984 INFO L87 Difference]: Start difference. First operand 36348 states and 46147 transitions. Second operand 10 states.