/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 SingleStatement --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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:37:26,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:37:26,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:37:26,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:37:26,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:37:26,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:37:26,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:37:26,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:37:26,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:37:26,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:37:26,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:37:26,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:37:26,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:37:26,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:37:26,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:37:26,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:37:26,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:37:26,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:37:26,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:37:26,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:37:26,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:37:26,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:37:26,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:37:27,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:37:27,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:37:27,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:37:27,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:37:27,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:37:27,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:37:27,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:37:27,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:37:27,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:37:27,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:37:27,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:37:27,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:37:27,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:37:27,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:37:27,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:37:27,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:37:27,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:37:27,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:37:27,029 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 [2020-09-25 14:37:27,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:37:27,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:37:27,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:37:27,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:37:27,076 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:37:27,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:37:27,077 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:37:27,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:37:27,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:37:27,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:37:27,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:37:27,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:37:27,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:37:27,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:37:27,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:37:27,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:37:27,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:37:27,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:37:27,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:37:27,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:37:27,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:37:27,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:27,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:37:27,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:37:27,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:37:27,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:37:27,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:37:27,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:37:27,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:37:27,083 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 -> SingleStatement 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=0.5;log-additional-information=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=0.5;log-additional-information=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=0.5;log-additional-information=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=0.5;log-additional-information=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=0.5;log-additional-information=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=0.5;log-additional-information=true; [2020-09-25 14:37:27,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:37:27,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:37:27,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:37:27,576 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:37:27,576 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:37:27,577 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-09-25 14:37:27,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fb584a0f/588ff9cef5ca4022bfb6daa5bee65872/FLAGd0b28f5aa [2020-09-25 14:37:28,308 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:28,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-09-25 14:37:28,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fb584a0f/588ff9cef5ca4022bfb6daa5bee65872/FLAGd0b28f5aa [2020-09-25 14:37:28,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fb584a0f/588ff9cef5ca4022bfb6daa5bee65872 [2020-09-25 14:37:28,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:28,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:28,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:28,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:28,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:28,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:28" (1/1) ... [2020-09-25 14:37:28,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72eb96f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:28, skipping insertion in model container [2020-09-25 14:37:28,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:28" (1/1) ... [2020-09-25 14:37:28,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:28,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:29,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:29,105 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:29,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:29,384 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:29,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29 WrapperNode [2020-09-25 14:37:29,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:29,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:29,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:29,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:29,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:29,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:29,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:29,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:29,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:29,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:29,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:29,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:29,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:29,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:29,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:29,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (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 [2020-09-25 14:37:29,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:29,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:29,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:29,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:37:30,920 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:37:30,920 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:37:30,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:30 BoogieIcfgContainer [2020-09-25 14:37:30,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:37:30,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:37:30,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:37:30,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:37:30,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:28" (1/3) ... [2020-09-25 14:37:30,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1744403d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:30, skipping insertion in model container [2020-09-25 14:37:30,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (2/3) ... [2020-09-25 14:37:30,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1744403d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:30, skipping insertion in model container [2020-09-25 14:37:30,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:30" (3/3) ... [2020-09-25 14:37:30,947 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-09-25 14:37:30,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:37:30,974 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:37:30,996 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:37:31,035 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:37:31,036 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:37:31,036 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:37:31,036 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:37:31,036 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:37:31,036 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:37:31,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:37:31,037 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:37:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:37:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-25 14:37:31,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:31,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:31,113 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:31,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:31,121 INFO L82 PathProgramCache]: Analyzing trace with hash -672460611, now seen corresponding path program 1 times [2020-09-25 14:37:31,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:31,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224325378] [2020-09-25 14:37:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:31,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:31,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:31,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:33,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:36,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:36,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 14:37:36,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:37:36,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:37:36,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:36,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:37:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:37:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:37:36,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:36,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:36,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:36,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:36,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 14:37:36,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:36,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:37:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:36,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224325378] [2020-09-25 14:37:36,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:36,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:37:36,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58230922] [2020-09-25 14:37:36,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:37:36,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:36,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:37:36,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:37:36,712 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:38,685 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 14:37:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:38,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-09-25 14:37:38,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:38,723 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 14:37:38,723 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 14:37:38,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 14:37:38,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 14:37:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:37:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 14:37:38,846 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 113 [2020-09-25 14:37:38,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:38,847 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 14:37:38,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:38,847 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 14:37:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 14:37:38,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:38,858 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:38,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:38,859 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:38,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:38,859 INFO L82 PathProgramCache]: Analyzing trace with hash 241463436, now seen corresponding path program 1 times [2020-09-25 14:37:38,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:38,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070127468] [2020-09-25 14:37:38,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:39,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:41,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:41,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 14:37:41,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:37:41,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2209 [2020-09-25 14:37:41,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:41,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:41,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:41,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:37:41,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 14:37:41,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:41,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:41,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:41,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:41,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:41,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:41,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:41,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:41,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:41,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:41,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:41,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:37:41,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:41,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:37:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:41,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070127468] [2020-09-25 14:37:41,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:41,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:41,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556610220] [2020-09-25 14:37:41,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:41,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:41,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:41,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:41,416 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 14:37:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:43,518 INFO L93 Difference]: Finished difference Result 1499 states and 1862 transitions. [2020-09-25 14:37:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:43,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 14:37:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:43,525 INFO L225 Difference]: With dead ends: 1499 [2020-09-25 14:37:43,525 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 14:37:43,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:43,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 14:37:43,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 891. [2020-09-25 14:37:43,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 14:37:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1045 transitions. [2020-09-25 14:37:43,569 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1045 transitions. Word has length 134 [2020-09-25 14:37:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:43,570 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1045 transitions. [2020-09-25 14:37:43,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1045 transitions. [2020-09-25 14:37:43,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 14:37:43,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:43,574 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:43,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:37:43,574 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:43,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:43,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1367635627, now seen corresponding path program 1 times [2020-09-25 14:37:43,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:43,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182629188] [2020-09-25 14:37:43,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:48,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:48,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 14:37:48,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:37:48,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:37:48,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:48,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 14:37:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 14:37:48,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:48,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:48,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:48,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:48,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:48,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:37:48,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:48,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:48,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:48,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:48,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:37:48,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:48,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 14:37:48,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:48,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:48,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:48,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:48,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:37:48,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:49,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182629188] [2020-09-25 14:37:49,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:49,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:49,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241756623] [2020-09-25 14:37:49,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:49,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:49,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:49,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:49,057 INFO L87 Difference]: Start difference. First operand 891 states and 1045 transitions. Second operand 5 states. [2020-09-25 14:37:50,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:50,948 INFO L93 Difference]: Finished difference Result 2243 states and 2732 transitions. [2020-09-25 14:37:50,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:50,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 14:37:50,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:50,958 INFO L225 Difference]: With dead ends: 2243 [2020-09-25 14:37:50,958 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 14:37:50,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:50,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 14:37:50,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1177. [2020-09-25 14:37:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-25 14:37:51,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1410 transitions. [2020-09-25 14:37:51,003 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1410 transitions. Word has length 138 [2020-09-25 14:37:51,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:51,004 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1410 transitions. [2020-09-25 14:37:51,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:51,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1410 transitions. [2020-09-25 14:37:51,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 14:37:51,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:51,010 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:51,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:51,010 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:51,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:51,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1335946793, now seen corresponding path program 1 times [2020-09-25 14:37:51,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:51,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345809621] [2020-09-25 14:37:51,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:51,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:51,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:52,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:54,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:54,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:56,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 14:37:56,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:37:56,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 14:37:56,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:56,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 14:37:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 14:37:56,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:56,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:56,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:56,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:56,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:56,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:56,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:56,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:56,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:56,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:56,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:56,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:56,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:37:56,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:56,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:56,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:56,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:37:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:56,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:56,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 14:37:56,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:56,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 14:37:56,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:56,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 14:37:56,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 14:37:56,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345809621] [2020-09-25 14:37:56,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:56,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:56,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514497416] [2020-09-25 14:37:56,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:56,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:56,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:56,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:56,438 INFO L87 Difference]: Start difference. First operand 1177 states and 1410 transitions. Second operand 5 states. [2020-09-25 14:37:58,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:58,670 INFO L93 Difference]: Finished difference Result 3170 states and 3928 transitions. [2020-09-25 14:37:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:58,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-25 14:37:58,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:58,681 INFO L225 Difference]: With dead ends: 3170 [2020-09-25 14:37:58,681 INFO L226 Difference]: Without dead ends: 2017 [2020-09-25 14:37:58,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2020-09-25 14:37:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1902. [2020-09-25 14:37:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1902 states. [2020-09-25 14:37:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2328 transitions. [2020-09-25 14:37:58,743 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2328 transitions. Word has length 190 [2020-09-25 14:37:58,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:58,744 INFO L479 AbstractCegarLoop]: Abstraction has 1902 states and 2328 transitions. [2020-09-25 14:37:58,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2328 transitions. [2020-09-25 14:37:58,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 14:37:58,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:58,753 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:58,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:37:58,753 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:58,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:58,754 INFO L82 PathProgramCache]: Analyzing trace with hash 604576851, now seen corresponding path program 1 times [2020-09-25 14:37:58,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:58,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131600597] [2020-09-25 14:37:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:59,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:02,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 14:38:02,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:38:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3592 [2020-09-25 14:38:02,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:02,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 14:38:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 14:38:02,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:02,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:02,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:02,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:02,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:02,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:38:02,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:02,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:02,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:02,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:02,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:02,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:38:02,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:02,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:38:02,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:02,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:38:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:02,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 14:38:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:02,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 14:38:02,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:02,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 14:38:02,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:02,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 14:38:02,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:38:02,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131600597] [2020-09-25 14:38:02,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:02,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:38:02,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382234580] [2020-09-25 14:38:02,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:38:02,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:02,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:38:02,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:38:02,745 INFO L87 Difference]: Start difference. First operand 1902 states and 2328 transitions. Second operand 7 states. [2020-09-25 14:38:05,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:05,175 INFO L93 Difference]: Finished difference Result 4287 states and 5493 transitions. [2020-09-25 14:38:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:38:05,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-09-25 14:38:05,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:05,191 INFO L225 Difference]: With dead ends: 4287 [2020-09-25 14:38:05,191 INFO L226 Difference]: Without dead ends: 2409 [2020-09-25 14:38:05,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:38:05,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2020-09-25 14:38:05,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2208. [2020-09-25 14:38:05,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2208 states. [2020-09-25 14:38:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 2720 transitions. [2020-09-25 14:38:05,294 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 2720 transitions. Word has length 197 [2020-09-25 14:38:05,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:05,294 INFO L479 AbstractCegarLoop]: Abstraction has 2208 states and 2720 transitions. [2020-09-25 14:38:05,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:38:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 2720 transitions. [2020-09-25 14:38:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 14:38:05,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:05,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:05,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:38:05,308 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:05,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:05,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1212214612, now seen corresponding path program 1 times [2020-09-25 14:38:05,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:05,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384048536] [2020-09-25 14:38:05,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:05,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:05,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:05,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:07,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:10,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 14:38:10,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:38:10,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:38:10,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:10,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 14:38:10,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:38:10,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:10,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:10,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:10,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:10,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:10,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:38:10,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:10,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:10,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:10,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 14:38:10,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:10,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 14:38:10,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:10,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:10,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:38:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:10,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 14:38:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:10,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:10,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 14:38:10,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:10,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 14:38:10,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:10,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 14:38:10,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:38:10,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384048536] [2020-09-25 14:38:10,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:10,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:38:10,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841202513] [2020-09-25 14:38:10,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:38:10,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:10,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:38:10,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:38:10,862 INFO L87 Difference]: Start difference. First operand 2208 states and 2720 transitions. Second operand 7 states. [2020-09-25 14:38:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:13,545 INFO L93 Difference]: Finished difference Result 5988 states and 7921 transitions. [2020-09-25 14:38:13,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:38:13,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-09-25 14:38:13,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:13,571 INFO L225 Difference]: With dead ends: 5988 [2020-09-25 14:38:13,572 INFO L226 Difference]: Without dead ends: 3804 [2020-09-25 14:38:13,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:38:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3804 states. [2020-09-25 14:38:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3804 to 3161. [2020-09-25 14:38:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3161 states. [2020-09-25 14:38:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 3836 transitions. [2020-09-25 14:38:13,697 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 3836 transitions. Word has length 229 [2020-09-25 14:38:13,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:13,697 INFO L479 AbstractCegarLoop]: Abstraction has 3161 states and 3836 transitions. [2020-09-25 14:38:13,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:38:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 3836 transitions. [2020-09-25 14:38:13,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 14:38:13,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:13,718 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:13,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:38:13,718 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:13,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:13,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1986664740, now seen corresponding path program 1 times [2020-09-25 14:38:13,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:13,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378776947] [2020-09-25 14:38:13,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:13,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking...