/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/Problem02_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:38:22,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:38:22,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:38:22,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:38:22,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:38:22,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:38:22,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:38:22,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:38:22,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:38:22,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:38:22,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:38:22,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:38:22,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:38:22,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:38:22,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:38:22,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:38:22,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:38:22,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:38:22,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:38:22,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:38:22,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:38:22,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:38:22,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:38:22,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:38:22,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:38:22,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:38:22,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:38:22,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:38:22,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:38:22,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:38:22,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:38:22,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:38:22,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:38:22,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:38:22,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:38:22,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:38:22,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:38:22,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:38:22,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:38:22,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:38:22,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:38:22,852 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 14:38:22,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:38:22,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:38:22,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:38:22,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:38:22,882 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:38:22,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:38:22,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:38:22,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:38:22,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:38:22,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:38:22,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:38:22,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:38:22,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:38:22,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:38:22,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:38:22,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:38:22,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:38:22,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:38:22,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:38:22,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:38:22,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:38:22,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:38:22,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:38:22,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:38:22,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:38:22,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:38:22,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:38:22,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:38:22,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:38:22,887 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 14:38:23,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:38:23,376 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:38:23,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:38:23,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:38:23,384 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:38:23,386 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-25 14:38:23,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e67d5b31/588dd87d30cf49c281ed5fde35d2786a/FLAG62312980c [2020-09-25 14:38:24,152 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:38:24,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-25 14:38:24,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e67d5b31/588dd87d30cf49c281ed5fde35d2786a/FLAG62312980c [2020-09-25 14:38:24,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e67d5b31/588dd87d30cf49c281ed5fde35d2786a [2020-09-25 14:38:24,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:38:24,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:38:24,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:38:24,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:38:24,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:38:24,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:38:24" (1/1) ... [2020-09-25 14:38:24,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3c9999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:24, skipping insertion in model container [2020-09-25 14:38:24,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:38:24" (1/1) ... [2020-09-25 14:38:24,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:38:24,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:38:24,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:38:24,928 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:38:25,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:38:25,147 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:38:25,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:25 WrapperNode [2020-09-25 14:38:25,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:38:25,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:38:25,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:38:25,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:38:25,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:25" (1/1) ... [2020-09-25 14:38:25,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:25" (1/1) ... [2020-09-25 14:38:25,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:25" (1/1) ... [2020-09-25 14:38:25,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:25" (1/1) ... [2020-09-25 14:38:25,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:25" (1/1) ... [2020-09-25 14:38:25,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:25" (1/1) ... [2020-09-25 14:38:25,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:25" (1/1) ... [2020-09-25 14:38:25,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:38:25,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:38:25,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:38:25,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:38:25,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:25" (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 14:38:25,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:38:25,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:38:25,370 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:38:25,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:38:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:38:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:38:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:38:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:38:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:38:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:38:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:38:26,719 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:38:26,720 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:38:26,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:38:26 BoogieIcfgContainer [2020-09-25 14:38:26,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:38:26,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:38:26,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:38:26,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:38:26,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:38:24" (1/3) ... [2020-09-25 14:38:26,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ee9fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:38:26, skipping insertion in model container [2020-09-25 14:38:26,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:25" (2/3) ... [2020-09-25 14:38:26,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ee9fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:38:26, skipping insertion in model container [2020-09-25 14:38:26,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:38:26" (3/3) ... [2020-09-25 14:38:26,740 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label03.c [2020-09-25 14:38:26,751 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:38:26,762 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:38:26,785 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:38:26,822 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:38:26,822 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:38:26,822 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:38:26,823 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:38:26,823 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:38:26,823 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:38:26,823 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:38:26,823 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:38:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:38:26,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 14:38:26,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:26,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:26,882 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:26,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:26,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1547939106, now seen corresponding path program 1 times [2020-09-25 14:38:26,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:26,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034162266] [2020-09-25 14:38:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:27,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:27,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:29,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:31,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:32,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 14:38:32,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:38:32,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 14:38:32,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:32,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:32,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:38:32,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:38:32,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 14:38:32,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:38:32,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:32,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:32,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:32,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:38:32,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:32,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:38:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:32,600 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 14:38:32,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034162266] [2020-09-25 14:38:32,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:38:32,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:38:32,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279216082] [2020-09-25 14:38:32,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:38:32,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:32,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:38:32,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:38:32,632 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:38:34,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:34,928 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 14:38:34,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:38:34,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-25 14:38:34,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:34,959 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 14:38:34,959 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 14:38:34,969 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 14:38:34,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 14:38:35,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 14:38:35,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 14:38:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 14:38:35,077 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 155 [2020-09-25 14:38:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:35,078 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 14:38:35,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:38:35,079 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 14:38:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 14:38:35,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:35,088 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:35,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:38:35,088 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:35,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1141989810, now seen corresponding path program 1 times [2020-09-25 14:38:35,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:35,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892651540] [2020-09-25 14:38:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:35,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:35,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:36,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:37,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:37,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:38,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:40,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 14:38:40,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:38:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 14:38:40,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:40,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 14:38:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 14:38:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:38:40,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:40,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:40,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:40,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:38:40,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:40,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:40,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:40,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:40,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:40,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:40,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:38:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:40,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:38:40,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:40,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:40,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:40,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:38:40,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:40,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892651540] [2020-09-25 14:38:40,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:40,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:40,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272566157] [2020-09-25 14:38:40,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:40,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:40,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:40,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:40,422 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 14:38:42,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:42,474 INFO L93 Difference]: Finished difference Result 1753 states and 2210 transitions. [2020-09-25 14:38:42,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:42,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 14:38:42,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:42,491 INFO L225 Difference]: With dead ends: 1753 [2020-09-25 14:38:42,491 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 14:38:42,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 14:38:42,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 14:38:42,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 881. [2020-09-25 14:38:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 14:38:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1111 transitions. [2020-09-25 14:38:42,540 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1111 transitions. Word has length 173 [2020-09-25 14:38:42,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:42,540 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1111 transitions. [2020-09-25 14:38:42,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1111 transitions. [2020-09-25 14:38:42,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 14:38:42,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:42,546 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:42,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:38:42,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:42,547 INFO L82 PathProgramCache]: Analyzing trace with hash 372852103, now seen corresponding path program 1 times [2020-09-25 14:38:42,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:42,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812506151] [2020-09-25 14:38:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:42,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:42,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:42,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:46,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:46,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:46,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:47,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:47,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 14:38:47,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:38:47,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:38:47,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:47,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:47,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:47,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 14:38:47,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 14:38:47,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:47,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:47,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:47,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:47,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:47,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:38:47,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:47,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:47,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:47,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:47,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:38:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:47,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:47,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:47,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:38:47,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:47,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:38:47,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:47,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:47,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:47,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:38:47,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:47,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812506151] [2020-09-25 14:38:47,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:47,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:47,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842188228] [2020-09-25 14:38:47,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:47,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:47,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:47,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:47,856 INFO L87 Difference]: Start difference. First operand 881 states and 1111 transitions. Second operand 5 states. [2020-09-25 14:38:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:50,311 INFO L93 Difference]: Finished difference Result 2310 states and 3030 transitions. [2020-09-25 14:38:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:50,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 14:38:50,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:50,325 INFO L225 Difference]: With dead ends: 2310 [2020-09-25 14:38:50,326 INFO L226 Difference]: Without dead ends: 1451 [2020-09-25 14:38:50,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 14:38:50,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2020-09-25 14:38:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1235. [2020-09-25 14:38:50,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2020-09-25 14:38:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1532 transitions. [2020-09-25 14:38:50,390 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1532 transitions. Word has length 189 [2020-09-25 14:38:50,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:50,391 INFO L479 AbstractCegarLoop]: Abstraction has 1235 states and 1532 transitions. [2020-09-25 14:38:50,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1532 transitions. [2020-09-25 14:38:50,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 14:38:50,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:50,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:50,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:38:50,412 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:50,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:50,413 INFO L82 PathProgramCache]: Analyzing trace with hash 835170522, now seen corresponding path program 1 times [2020-09-25 14:38:50,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:50,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812005210] [2020-09-25 14:38:50,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:50,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:55,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:55,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:55,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:55,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 14:38:55,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:38:55,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 14:38:55,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:55,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 14:38:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 14:38:55,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:55,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:55,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:55,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:55,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:55,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:55,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:55,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:55,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:38:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:55,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:55,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:55,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:38:55,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:38:55,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:55,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:38:55,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:55,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812005210] [2020-09-25 14:38:55,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:55,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:55,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719997535] [2020-09-25 14:38:55,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:55,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:55,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:55,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:55,760 INFO L87 Difference]: Start difference. First operand 1235 states and 1532 transitions. Second operand 5 states. [2020-09-25 14:38:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:57,204 INFO L93 Difference]: Finished difference Result 3273 states and 4223 transitions. [2020-09-25 14:38:57,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:57,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-09-25 14:38:57,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:57,219 INFO L225 Difference]: With dead ends: 3273 [2020-09-25 14:38:57,219 INFO L226 Difference]: Without dead ends: 2060 [2020-09-25 14:38:57,225 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 14:38:57,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2020-09-25 14:38:57,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1853. [2020-09-25 14:38:57,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1853 states. [2020-09-25 14:38:57,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2225 transitions. [2020-09-25 14:38:57,292 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2225 transitions. Word has length 193 [2020-09-25 14:38:57,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:57,292 INFO L479 AbstractCegarLoop]: Abstraction has 1853 states and 2225 transitions. [2020-09-25 14:38:57,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2225 transitions. [2020-09-25 14:38:57,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 14:38:57,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:57,301 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:57,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:38:57,301 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:57,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:57,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1504338062, now seen corresponding path program 1 times [2020-09-25 14:38:57,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:57,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278787486] [2020-09-25 14:38:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:57,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:57,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:02,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:02,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:02,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 14:39:02,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:39:02,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:39:02,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:02,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:39:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 14:39:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 14:39:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:02,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:02,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:02,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:02,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:02,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:02,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:39:02,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:02,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:02,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:02,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:02,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:02,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:02,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:39:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:02,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:02,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:02,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:39:02,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:02,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:39:02,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:02,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:02,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:02,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:39:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:02,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:02,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 14:39:02,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:02,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 14:39:02,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:02,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:39:02,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 14:39:02,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278787486] [2020-09-25 14:39:02,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:39:02,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:39:02,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949215505] [2020-09-25 14:39:02,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:39:02,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:02,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:39:02,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:39:02,607 INFO L87 Difference]: Start difference. First operand 1853 states and 2225 transitions. Second operand 5 states. [2020-09-25 14:39:04,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:39:04,672 INFO L93 Difference]: Finished difference Result 4453 states and 5530 transitions. [2020-09-25 14:39:04,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:39:04,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-09-25 14:39:04,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:39:04,693 INFO L225 Difference]: With dead ends: 4453 [2020-09-25 14:39:04,693 INFO L226 Difference]: Without dead ends: 2622 [2020-09-25 14:39:04,700 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 14:39:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2020-09-25 14:39:04,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2610. [2020-09-25 14:39:04,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2610 states. [2020-09-25 14:39:04,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3111 transitions. [2020-09-25 14:39:04,794 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3111 transitions. Word has length 212 [2020-09-25 14:39:04,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:39:04,794 INFO L479 AbstractCegarLoop]: Abstraction has 2610 states and 3111 transitions. [2020-09-25 14:39:04,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:39:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3111 transitions. [2020-09-25 14:39:04,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 14:39:04,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:04,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:39:04,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:39:04,808 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:04,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:04,808 INFO L82 PathProgramCache]: Analyzing trace with hash -179887798, now seen corresponding path program 1 times [2020-09-25 14:39:04,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:04,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298679925] [2020-09-25 14:39:04,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:04,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:05,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:08,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:09,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:09,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:09,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 14:39:09,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:39:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 14:39:09,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:09,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:39:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 14:39:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 14:39:09,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:09,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:09,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:09,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:09,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:39:09,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:09,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:09,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:39:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:10,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:10,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:39:10,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:10,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:39:10,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:10,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 14:39:10,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:10,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:39:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:10,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:10,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:10,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 14:39:10,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:10,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 14:39:10,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:10,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:10,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:39:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:39:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 14:39:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:39:10,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298679925] [2020-09-25 14:39:10,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:39:10,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:39:10,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212277481] [2020-09-25 14:39:10,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:39:10,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:10,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:39:10,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:39:10,239 INFO L87 Difference]: Start difference. First operand 2610 states and 3111 transitions. Second operand 7 states.