/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=0.4 --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/Problem10_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:06,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:06,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:06,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:06,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:06,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:06,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:06,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:06,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:06,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:06,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:06,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:06,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:06,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:06,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:06,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:06,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:06,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:06,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:06,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:06,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:06,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:06,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:06,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:06,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:06,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:06,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:06,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:06,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:06,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:06,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:06,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:06,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:06,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:06,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:06,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:06,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:06,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:06,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:06,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:06,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:06,854 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 13:35:06,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:06,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:06,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:06,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:06,900 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:06,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:06,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:06,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:06,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:06,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:06,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:06,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:06,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:06,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:06,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:06,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:06,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:06,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:06,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:06,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:06,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:06,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:06,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:06,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:06,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:06,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:06,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:06,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:06,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:06,906 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:35:07,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:07,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:07,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:07,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:07,399 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:07,400 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 13:35:07,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3e55f4c2/d8d42aa7916b4bd08112405b6568e2f5/FLAGc8ea4be8e [2020-09-25 13:35:08,149 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:08,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 13:35:08,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3e55f4c2/d8d42aa7916b4bd08112405b6568e2f5/FLAGc8ea4be8e [2020-09-25 13:35:08,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3e55f4c2/d8d42aa7916b4bd08112405b6568e2f5 [2020-09-25 13:35:08,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:08,404 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:08,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:08,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:08,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:08,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:08" (1/1) ... [2020-09-25 13:35:08,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bef9f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:08, skipping insertion in model container [2020-09-25 13:35:08,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:08" (1/1) ... [2020-09-25 13:35:08,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:08,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:08,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:08,936 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:09,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:09,248 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:09,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:09 WrapperNode [2020-09-25 13:35:09,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:09,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:09,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:09,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:09,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:09" (1/1) ... [2020-09-25 13:35:09,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:09" (1/1) ... [2020-09-25 13:35:09,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:09" (1/1) ... [2020-09-25 13:35:09,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:09" (1/1) ... [2020-09-25 13:35:09,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:09" (1/1) ... [2020-09-25 13:35:09,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:09" (1/1) ... [2020-09-25 13:35:09,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:09" (1/1) ... [2020-09-25 13:35:09,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:09,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:09,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:09,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:09,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:09" (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 13:35:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:11,015 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:11,015 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:11,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:11 BoogieIcfgContainer [2020-09-25 13:35:11,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:11,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:11,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:11,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:11,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:08" (1/3) ... [2020-09-25 13:35:11,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ac3cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:11, skipping insertion in model container [2020-09-25 13:35:11,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:09" (2/3) ... [2020-09-25 13:35:11,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ac3cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:11, skipping insertion in model container [2020-09-25 13:35:11,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:11" (3/3) ... [2020-09-25 13:35:11,035 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2020-09-25 13:35:11,047 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:11,058 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:11,081 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:11,117 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:11,117 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:11,121 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:11,121 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:11,121 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:11,121 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:11,121 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:11,121 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:35:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 13:35:11,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:11,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:11,164 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:11,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:11,171 INFO L82 PathProgramCache]: Analyzing trace with hash -495691305, now seen corresponding path program 1 times [2020-09-25 13:35:11,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:11,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930015990] [2020-09-25 13:35:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:11,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:11,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:11,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:12,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:12,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 13:35:12,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:35:12,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-09-25 13:35:12,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:12,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:12,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:12,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:35:12,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 13:35:12,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:35:12,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:12,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:12,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:12,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:12,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:35:12,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:12,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:12,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:12,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:12,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:35:12,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:12,380 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 13:35:12,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930015990] [2020-09-25 13:35:12,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:12,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:35:12,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72547484] [2020-09-25 13:35:12,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:35:12,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:12,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:35:12,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:35:12,415 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:35:14,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:14,475 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 13:35:14,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:35:14,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 13:35:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:14,502 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 13:35:14,502 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 13:35:14,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:14,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 13:35:14,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 13:35:14,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 13:35:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 13:35:14,628 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 54 [2020-09-25 13:35:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:14,630 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 13:35:14,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:35:14,631 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 13:35:14,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 13:35:14,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:14,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:14,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:14,651 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:14,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:14,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1783140025, now seen corresponding path program 1 times [2020-09-25 13:35:14,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:14,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545082517] [2020-09-25 13:35:14,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:14,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:15,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:19,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:19,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 13:35:19,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:19,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4294 [2020-09-25 13:35:19,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:19,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:35:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 13:35:19,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:19,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:19,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:19,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:19,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:19,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:35:19,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:19,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:19,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:19,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:19,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:19,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:19,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:19,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:19,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 13:35:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:19,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:35:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:35:19,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545082517] [2020-09-25 13:35:19,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:19,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:35:19,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28857943] [2020-09-25 13:35:19,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:35:19,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:19,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:35:19,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:35:19,406 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 13:35:21,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:21,771 INFO L93 Difference]: Finished difference Result 1165 states and 1486 transitions. [2020-09-25 13:35:21,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:35:21,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-09-25 13:35:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:21,784 INFO L225 Difference]: With dead ends: 1165 [2020-09-25 13:35:21,784 INFO L226 Difference]: Without dead ends: 1163 [2020-09-25 13:35:21,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-25 13:35:21,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 851. [2020-09-25 13:35:21,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 13:35:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1112 transitions. [2020-09-25 13:35:21,842 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1112 transitions. Word has length 133 [2020-09-25 13:35:21,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:21,843 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1112 transitions. [2020-09-25 13:35:21,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:35:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1112 transitions. [2020-09-25 13:35:21,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 13:35:21,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:21,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:21,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:21,847 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:21,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:21,847 INFO L82 PathProgramCache]: Analyzing trace with hash -412359152, now seen corresponding path program 1 times [2020-09-25 13:35:21,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:21,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326564834] [2020-09-25 13:35:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:21,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:21,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:22,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:26,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:26,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 13:35:26,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:26,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 13:35:26,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:26,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:26,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:26,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:26,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:35:26,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:27,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:27,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:27,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:27,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:35:27,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:27,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:27,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:27,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:27,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:35:27,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:27,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 13:35:27,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:27,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:35:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:27,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326564834] [2020-09-25 13:35:27,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:27,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:27,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690695364] [2020-09-25 13:35:27,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:27,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:27,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:27,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:27,291 INFO L87 Difference]: Start difference. First operand 851 states and 1112 transitions. Second operand 7 states. [2020-09-25 13:35:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:29,442 INFO L93 Difference]: Finished difference Result 2033 states and 2722 transitions. [2020-09-25 13:35:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:29,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-09-25 13:35:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:29,451 INFO L225 Difference]: With dead ends: 2033 [2020-09-25 13:35:29,451 INFO L226 Difference]: Without dead ends: 1197 [2020-09-25 13:35:29,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:35:29,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2020-09-25 13:35:29,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1013. [2020-09-25 13:35:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-09-25 13:35:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1273 transitions. [2020-09-25 13:35:29,506 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1273 transitions. Word has length 137 [2020-09-25 13:35:29,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:29,507 INFO L479 AbstractCegarLoop]: Abstraction has 1013 states and 1273 transitions. [2020-09-25 13:35:29,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:29,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1273 transitions. [2020-09-25 13:35:29,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 13:35:29,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:29,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:29,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:29,510 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:29,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:29,510 INFO L82 PathProgramCache]: Analyzing trace with hash -109496539, now seen corresponding path program 1 times [2020-09-25 13:35:29,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:29,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152841240] [2020-09-25 13:35:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:29,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:32,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 13:35:32,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:32,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2805 [2020-09-25 13:35:32,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:32,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 13:35:32,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:32,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:32,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:32,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:32,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:35:32,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:32,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:32,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:32,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:32,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:32,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:32,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:32,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 13:35:32,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:32,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:32,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:32,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152841240] [2020-09-25 13:35:32,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:32,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:35:32,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904764278] [2020-09-25 13:35:32,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:32,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:32,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:32,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:32,740 INFO L87 Difference]: Start difference. First operand 1013 states and 1273 transitions. Second operand 8 states. [2020-09-25 13:35:36,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:36,305 INFO L93 Difference]: Finished difference Result 3578 states and 4812 transitions. [2020-09-25 13:35:36,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:36,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-09-25 13:35:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:36,323 INFO L225 Difference]: With dead ends: 3578 [2020-09-25 13:35:36,323 INFO L226 Difference]: Without dead ends: 2580 [2020-09-25 13:35:36,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:35:36,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2020-09-25 13:35:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2151. [2020-09-25 13:35:36,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2151 states. [2020-09-25 13:35:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 2732 transitions. [2020-09-25 13:35:36,413 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 2732 transitions. Word has length 143 [2020-09-25 13:35:36,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:36,413 INFO L479 AbstractCegarLoop]: Abstraction has 2151 states and 2732 transitions. [2020-09-25 13:35:36,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 2732 transitions. [2020-09-25 13:35:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 13:35:36,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:36,419 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:36,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:35:36,420 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:36,420 INFO L82 PathProgramCache]: Analyzing trace with hash 480632245, now seen corresponding path program 1 times [2020-09-25 13:35:36,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:36,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816548015] [2020-09-25 13:35:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:37,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:41,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 13:35:41,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:35:41,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:35:41,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:41,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:35:41,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:41,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:41,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:41,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:41,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:41,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:35:41,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:41,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:41,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:41,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:41,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:41,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:41,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:41,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:41,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 13:35:41,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:41,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:41,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:41,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:41,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:35:41,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:41,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:35:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:41,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:42,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:42,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:42,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 13:35:42,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:42,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:42,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:42,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 79 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:35:42,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816548015] [2020-09-25 13:35:42,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:42,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:35:42,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525576885] [2020-09-25 13:35:42,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:35:42,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:42,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:35:42,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:35:42,307 INFO L87 Difference]: Start difference. First operand 2151 states and 2732 transitions. Second operand 10 states. [2020-09-25 13:35:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:47,952 INFO L93 Difference]: Finished difference Result 5002 states and 6486 transitions. [2020-09-25 13:35:47,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:35:47,953 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 222 [2020-09-25 13:35:47,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:47,970 INFO L225 Difference]: With dead ends: 5002 [2020-09-25 13:35:47,970 INFO L226 Difference]: Without dead ends: 2866 [2020-09-25 13:35:47,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:35:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2020-09-25 13:35:48,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2823. [2020-09-25 13:35:48,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2823 states. [2020-09-25 13:35:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 3573 transitions. [2020-09-25 13:35:48,086 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 3573 transitions. Word has length 222 [2020-09-25 13:35:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:48,087 INFO L479 AbstractCegarLoop]: Abstraction has 2823 states and 3573 transitions. [2020-09-25 13:35:48,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:35:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 3573 transitions. [2020-09-25 13:35:48,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 13:35:48,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:48,092 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:35:48,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:35:48,093 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:48,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:48,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1311681026, now seen corresponding path program 1 times [2020-09-25 13:35:48,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:48,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495684877] [2020-09-25 13:35:48,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:48,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:52,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:52,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:53,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 13:35:53,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:35:53,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 13:35:53,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:53,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:35:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:35:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 13:35:53,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:53,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:53,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:53,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:53,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:35:53,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:53,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:35:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:35:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:53,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:53,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:53,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 13:35:53,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:53,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:35:53,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:53,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:35:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:53,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:54,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:54,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:35:54,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:54,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-09-25 13:35:54,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:54,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:54,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:54,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:54,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:35:54,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 13:35:54,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495684877] [2020-09-25 13:35:54,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:54,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:35:54,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5746311] [2020-09-25 13:35:54,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:35:54,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:54,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:35:54,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:35:54,379 INFO L87 Difference]: Start difference. First operand 2823 states and 3573 transitions. Second operand 10 states.