/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:00:06,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:00:06,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:00:06,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:00:06,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:00:06,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:00:06,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:00:06,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:00:06,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:00:06,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:00:06,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:00:06,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:00:06,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:00:06,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:00:06,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:00:06,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:00:06,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:00:06,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:00:06,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:00:06,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:00:06,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:00:06,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:00:06,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:00:06,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:00:06,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:00:06,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:00:06,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:00:06,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:00:06,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:00:06,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:00:06,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:00:06,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:00:06,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:00:06,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:00:06,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:00:06,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:00:06,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:00:06,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:00:06,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:00:06,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:00:06,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:00:06,972 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 09:00:07,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:00:07,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:00:07,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:00:07,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:00:07,003 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:00:07,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:00:07,003 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:00:07,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:00:07,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:00:07,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:00:07,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:00:07,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:00:07,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:00:07,005 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:00:07,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:00:07,005 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:00:07,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:00:07,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:00:07,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:00:07,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:00:07,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:00:07,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:00:07,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:00:07,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:00:07,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:00:07,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:00:07,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:00:07,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:00:07,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:00:07,008 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:00:07,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:00:07,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:00:07,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:00:07,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:00:07,551 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:00:07,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 09:00:07,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/081bad3b7/b8af18aac669497d845b8c71c728a97f/FLAGfa1907771 [2020-09-25 09:00:08,303 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:00:08,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 09:00:08,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/081bad3b7/b8af18aac669497d845b8c71c728a97f/FLAGfa1907771 [2020-09-25 09:00:08,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/081bad3b7/b8af18aac669497d845b8c71c728a97f [2020-09-25 09:00:08,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:00:08,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:00:08,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:08,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:00:08,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:00:08,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:08" (1/1) ... [2020-09-25 09:00:08,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:08, skipping insertion in model container [2020-09-25 09:00:08,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:08" (1/1) ... [2020-09-25 09:00:08,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:00:08,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:00:09,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:09,147 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:00:09,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:09,431 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:00:09,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:09 WrapperNode [2020-09-25 09:00:09,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:09,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:00:09,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:00:09,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:00:09,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:09" (1/1) ... [2020-09-25 09:00:09,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:09" (1/1) ... [2020-09-25 09:00:09,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:09" (1/1) ... [2020-09-25 09:00:09,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:09" (1/1) ... [2020-09-25 09:00:09,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:09" (1/1) ... [2020-09-25 09:00:09,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:09" (1/1) ... [2020-09-25 09:00:09,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:09" (1/1) ... [2020-09-25 09:00:09,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:00:09,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:00:09,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:00:09,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:00:09,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:09" (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 09:00:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:00:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:00:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:00:09,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:00:11,000 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:00:11,000 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:00:11,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:11 BoogieIcfgContainer [2020-09-25 09:00:11,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:00:11,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:00:11,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:00:11,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:00:11,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:00:08" (1/3) ... [2020-09-25 09:00:11,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:11, skipping insertion in model container [2020-09-25 09:00:11,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:09" (2/3) ... [2020-09-25 09:00:11,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:11, skipping insertion in model container [2020-09-25 09:00:11,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:11" (3/3) ... [2020-09-25 09:00:11,030 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-09-25 09:00:11,041 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:00:11,056 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:00:11,079 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:00:11,124 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:00:11,125 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:00:11,125 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:00:11,126 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:00:11,126 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:00:11,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:00:11,126 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:00:11,126 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:00:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:00:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 09:00:11,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:11,213 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] [2020-09-25 09:00:11,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:11,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:11,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1930932209, now seen corresponding path program 1 times [2020-09-25 09:00:11,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:11,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251981973] [2020-09-25 09:00:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:11,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:12,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:12,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:16,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 09:00:16,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:00:16,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:00:16,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:16,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:00:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 09:00:16,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:00:16,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:16,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:16,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:16,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:00:16,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:16,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:00:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:16,864 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 09:00:16,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251981973] [2020-09-25 09:00:16,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:16,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:00:16,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726084182] [2020-09-25 09:00:16,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:00:16,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:16,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:00:16,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:00:16,902 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:00:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:19,287 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 09:00:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:00:19,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 09:00:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:19,319 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 09:00:19,319 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 09:00:19,332 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 09:00:19,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 09:00:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 09:00:19,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 09:00:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 09:00:19,454 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 144 [2020-09-25 09:00:19,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:19,455 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 09:00:19,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:00:19,456 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 09:00:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 09:00:19,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:19,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:19,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:00:19,465 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:19,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:19,465 INFO L82 PathProgramCache]: Analyzing trace with hash -838420896, now seen corresponding path program 1 times [2020-09-25 09:00:19,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:19,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192599834] [2020-09-25 09:00:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:19,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:21,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:24,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:24,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 09:00:24,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 09:00:24,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:24,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:24,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:00:24,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 09:00:24,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 09:00:24,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:24,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:24,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:25,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:25,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:25,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:25,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:00:25,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:25,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:25,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:25,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:25,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:25,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:25,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:25,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 09:00:25,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:25,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:00:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:25,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192599834] [2020-09-25 09:00:25,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:25,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:00:25,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225598535] [2020-09-25 09:00:25,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:00:25,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:25,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:00:25,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:00:25,392 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 9 states. [2020-09-25 09:00:26,314 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-09-25 09:00:30,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:30,762 INFO L93 Difference]: Finished difference Result 2178 states and 2848 transitions. [2020-09-25 09:00:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:00:30,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-09-25 09:00:30,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:30,780 INFO L225 Difference]: With dead ends: 2178 [2020-09-25 09:00:30,780 INFO L226 Difference]: Without dead ends: 1100 [2020-09-25 09:00:30,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:00:30,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-09-25 09:00:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1064. [2020-09-25 09:00:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-09-25 09:00:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1200 transitions. [2020-09-25 09:00:30,863 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1200 transitions. Word has length 165 [2020-09-25 09:00:30,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:30,864 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1200 transitions. [2020-09-25 09:00:30,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:00:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1200 transitions. [2020-09-25 09:00:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 09:00:30,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:30,877 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:00:30,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:00:30,878 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:30,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:30,879 INFO L82 PathProgramCache]: Analyzing trace with hash -289310937, now seen corresponding path program 1 times [2020-09-25 09:00:30,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:30,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512179075] [2020-09-25 09:00:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:31,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:34,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:35,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:35,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:35,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 09:00:35,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:00:35,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:00:35,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:35,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 09:00:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 09:00:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:36,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:36,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:36,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:36,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:36,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:00:36,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:36,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:36,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:36,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:36,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:36,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:00:36,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:00:36,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:36,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:00:36,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:36,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512179075] [2020-09-25 09:00:36,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:36,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:00:36,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656356354] [2020-09-25 09:00:36,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:36,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:36,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:36,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:36,270 INFO L87 Difference]: Start difference. First operand 1064 states and 1200 transitions. Second operand 5 states. [2020-09-25 09:00:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:38,127 INFO L93 Difference]: Finished difference Result 2435 states and 2832 transitions. [2020-09-25 09:00:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:38,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 09:00:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:38,139 INFO L225 Difference]: With dead ends: 2435 [2020-09-25 09:00:38,141 INFO L226 Difference]: Without dead ends: 1240 [2020-09-25 09:00:38,145 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 09:00:38,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-09-25 09:00:38,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1193. [2020-09-25 09:00:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-09-25 09:00:38,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1358 transitions. [2020-09-25 09:00:38,192 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1358 transitions. Word has length 170 [2020-09-25 09:00:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:38,194 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1358 transitions. [2020-09-25 09:00:38,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1358 transitions. [2020-09-25 09:00:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 09:00:38,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:38,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:38,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:00:38,209 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:38,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:38,212 INFO L82 PathProgramCache]: Analyzing trace with hash -64061830, now seen corresponding path program 1 times [2020-09-25 09:00:38,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:38,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400198148] [2020-09-25 09:00:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:38,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:43,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 09:00:43,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:00:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 09:00:43,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:43,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 09:00:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 09:00:43,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:43,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:43,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:43,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:43,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:43,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:00:43,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:43,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:43,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:43,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:43,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:43,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:43,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:43,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 09:00:43,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:43,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 09:00:43,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:43,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 09:00:43,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:43,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400198148] [2020-09-25 09:00:43,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:43,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:00:43,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153504074] [2020-09-25 09:00:43,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:43,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:43,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:43,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:43,676 INFO L87 Difference]: Start difference. First operand 1193 states and 1358 transitions. Second operand 5 states. [2020-09-25 09:00:45,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:45,549 INFO L93 Difference]: Finished difference Result 3002 states and 3516 transitions. [2020-09-25 09:00:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:45,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 09:00:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:45,561 INFO L225 Difference]: With dead ends: 3002 [2020-09-25 09:00:45,562 INFO L226 Difference]: Without dead ends: 1833 [2020-09-25 09:00:45,566 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 09:00:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2020-09-25 09:00:45,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1487. [2020-09-25 09:00:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1487 states. [2020-09-25 09:00:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 1737 transitions. [2020-09-25 09:00:45,630 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 1737 transitions. Word has length 191 [2020-09-25 09:00:45,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:45,631 INFO L479 AbstractCegarLoop]: Abstraction has 1487 states and 1737 transitions. [2020-09-25 09:00:45,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:45,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 1737 transitions. [2020-09-25 09:00:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 09:00:45,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:45,638 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:45,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:00:45,639 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:45,640 INFO L82 PathProgramCache]: Analyzing trace with hash -656669948, now seen corresponding path program 1 times [2020-09-25 09:00:45,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:45,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668204888] [2020-09-25 09:00:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:45,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:45,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:46,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:46,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:46,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:49,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:49,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:49,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:50,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 09:00:50,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 09:00:50,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:00:50,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:50,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 09:00:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 09:00:50,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:50,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:50,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:50,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:00:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:50,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:50,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:50,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:00:50,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:00:50,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:50,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:50,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:00:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:50,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:50,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 09:00:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:50,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:00:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:00:51,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668204888] [2020-09-25 09:00:51,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:51,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:00:51,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137022004] [2020-09-25 09:00:51,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:51,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:51,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:51,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:51,039 INFO L87 Difference]: Start difference. First operand 1487 states and 1737 transitions. Second operand 7 states. [2020-09-25 09:00:52,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:52,995 INFO L93 Difference]: Finished difference Result 4193 states and 5037 transitions. [2020-09-25 09:00:52,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:00:52,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 09:00:52,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:53,010 INFO L225 Difference]: With dead ends: 4193 [2020-09-25 09:00:53,010 INFO L226 Difference]: Without dead ends: 2730 [2020-09-25 09:00:53,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:00:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2020-09-25 09:00:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2355. [2020-09-25 09:00:53,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2355 states. [2020-09-25 09:00:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 2841 transitions. [2020-09-25 09:00:53,090 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 2841 transitions. Word has length 203 [2020-09-25 09:00:53,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:53,091 INFO L479 AbstractCegarLoop]: Abstraction has 2355 states and 2841 transitions. [2020-09-25 09:00:53,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:53,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 2841 transitions. [2020-09-25 09:00:53,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 09:00:53,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:53,101 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:53,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:00:53,102 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1609805328, now seen corresponding path program 1 times [2020-09-25 09:00:53,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:53,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228109506] [2020-09-25 09:00:53,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:53,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking...