/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=0.1 --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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:52,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:52,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:52,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:52,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:52,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:52,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:52,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:52,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:52,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:52,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:52,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:52,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:52,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:52,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:52,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:52,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:52,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:52,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:52,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:52,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:52,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:52,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:52,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:52,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:52,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:52,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:52,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:52,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:52,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:52,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:52,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:52,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:52,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:52,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:52,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:52,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:52,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:52,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:52,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:52,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:52,506 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 10:12:52,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:52,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:52,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:52,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:52,548 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:52,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:52,548 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:52,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:52,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:52,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:52,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:52,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:52,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:52,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:52,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:52,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:52,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:52,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:52,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:52,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:52,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:52,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:52,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:52,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:52,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:52,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:52,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:52,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:52,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:52,553 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:12:52,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:53,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:53,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:53,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:53,018 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:53,019 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 10:12:53,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd5c86c7a/e2a1cfb8fd40425b81e02696b7db29bd/FLAG7419dee6b [2020-09-25 10:12:53,664 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:53,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 10:12:53,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd5c86c7a/e2a1cfb8fd40425b81e02696b7db29bd/FLAG7419dee6b [2020-09-25 10:12:53,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd5c86c7a/e2a1cfb8fd40425b81e02696b7db29bd [2020-09-25 10:12:53,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:53,934 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:53,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:53,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:53,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:53,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:53" (1/1) ... [2020-09-25 10:12:53,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5f9fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:53, skipping insertion in model container [2020-09-25 10:12:53,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:53" (1/1) ... [2020-09-25 10:12:53,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:54,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:54,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:54,642 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:54,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:54,833 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:54,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:54 WrapperNode [2020-09-25 10:12:54,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:54,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:54,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:54,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:54,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:54" (1/1) ... [2020-09-25 10:12:54,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:54" (1/1) ... [2020-09-25 10:12:54,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:54" (1/1) ... [2020-09-25 10:12:54,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:54" (1/1) ... [2020-09-25 10:12:54,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:54" (1/1) ... [2020-09-25 10:12:54,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:54" (1/1) ... [2020-09-25 10:12:54,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:54" (1/1) ... [2020-09-25 10:12:54,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:54,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:54,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:54,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:54,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:54" (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 10:12:55,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:55,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:55,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:55,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:55,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:55,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:55,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:56,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:56,581 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:56,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:56 BoogieIcfgContainer [2020-09-25 10:12:56,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:56,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:56,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:56,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:56,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:53" (1/3) ... [2020-09-25 10:12:56,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7035905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:56, skipping insertion in model container [2020-09-25 10:12:56,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:54" (2/3) ... [2020-09-25 10:12:56,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7035905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:56, skipping insertion in model container [2020-09-25 10:12:56,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:56" (3/3) ... [2020-09-25 10:12:56,602 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label54.c [2020-09-25 10:12:56,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:56,624 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:56,645 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:56,679 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:56,679 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:56,679 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:56,679 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:56,680 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:56,680 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:56,680 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:56,680 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 10:12:56,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:56,724 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] [2020-09-25 10:12:56,725 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:56,731 INFO L82 PathProgramCache]: Analyzing trace with hash -2126243537, now seen corresponding path program 1 times [2020-09-25 10:12:56,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:56,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086755843] [2020-09-25 10:12:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:57,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:58,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:12:58,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:12:58,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1347 [2020-09-25 10:12:58,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:58,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:12:58,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:12:58,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:58,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:58,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:58,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:58,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:12:58,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:58,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:58,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:58,533 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 10:12:58,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086755843] [2020-09-25 10:12:58,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:58,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:12:58,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874517893] [2020-09-25 10:12:58,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:12:58,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:58,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:12:58,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:12:58,566 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:13:00,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:00,617 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 10:13:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:13:00,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-09-25 10:13:00,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:00,661 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 10:13:00,662 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 10:13:00,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 10:13:00,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 10:13:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 10:13:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 10:13:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 10:13:00,826 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 81 [2020-09-25 10:13:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:00,828 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 10:13:00,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 10:13:00,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 10:13:00,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:00,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:00,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:13:00,852 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:00,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:00,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1687287808, now seen corresponding path program 1 times [2020-09-25 10:13:00,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:00,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745960953] [2020-09-25 10:13:00,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:00,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:05,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:05,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 10:13:05,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:13:05,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 10:13:05,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:05,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:05,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:05,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:13:05,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 10:13:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:06,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:06,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:06,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:06,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:13:06,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:06,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:13:06,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:06,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:06,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:06,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:13:06,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:06,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 10:13:06,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:06,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:13:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:13:06,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745960953] [2020-09-25 10:13:06,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:06,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:13:06,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932337587] [2020-09-25 10:13:06,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:13:06,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:06,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:13:06,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:13:06,574 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 10:13:08,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:08,153 INFO L93 Difference]: Finished difference Result 1226 states and 1532 transitions. [2020-09-25 10:13:08,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:13:08,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-25 10:13:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:08,164 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 10:13:08,164 INFO L226 Difference]: Without dead ends: 697 [2020-09-25 10:13:08,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-25 10:13:08,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2020-09-25 10:13:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 10:13:08,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 10:13:08,195 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 160 [2020-09-25 10:13:08,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:08,198 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 10:13:08,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:13:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 10:13:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 10:13:08,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:08,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:08,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:08,215 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:08,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:08,215 INFO L82 PathProgramCache]: Analyzing trace with hash 935848482, now seen corresponding path program 1 times [2020-09-25 10:13:08,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:08,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409744054] [2020-09-25 10:13:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:08,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:08,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:13,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 10:13:13,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:13:13,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4996 [2020-09-25 10:13:13,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:13,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:13:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 10:13:13,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:13,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:13,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:13,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:13,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:13,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:13:13,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:13,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:13,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:13,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:13,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:13,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:13,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:13,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:13,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 10:13:13,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:13,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:13:13,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:13,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409744054] [2020-09-25 10:13:13,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:13,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:13:13,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899094402] [2020-09-25 10:13:13,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:13:13,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:13,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:13:13,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:13:13,825 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 11 states. [2020-09-25 10:13:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:16,423 INFO L93 Difference]: Finished difference Result 1618 states and 2057 transitions. [2020-09-25 10:13:16,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:13:16,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2020-09-25 10:13:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:16,430 INFO L225 Difference]: With dead ends: 1618 [2020-09-25 10:13:16,430 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 10:13:16,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:13:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 10:13:16,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 997. [2020-09-25 10:13:16,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 10:13:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1215 transitions. [2020-09-25 10:13:16,465 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1215 transitions. Word has length 170 [2020-09-25 10:13:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:16,466 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1215 transitions. [2020-09-25 10:13:16,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:13:16,466 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1215 transitions. [2020-09-25 10:13:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 10:13:16,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:16,469 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:16,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:16,470 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:16,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:16,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1528839770, now seen corresponding path program 1 times [2020-09-25 10:13:16,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:16,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103754520] [2020-09-25 10:13:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:19,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 10:13:19,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:19,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2829 [2020-09-25 10:13:19,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:19,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 10:13:19,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:19,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:19,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:19,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:19,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:13:19,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:19,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:19,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:19,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:19,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:19,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:19,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:19,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 10:13:19,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 10:13:19,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:19,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:13:19,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:19,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103754520] [2020-09-25 10:13:19,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:19,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:19,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017708366] [2020-09-25 10:13:19,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:19,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:19,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:19,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:19,768 INFO L87 Difference]: Start difference. First operand 997 states and 1215 transitions. Second operand 8 states. [2020-09-25 10:13:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:22,916 INFO L93 Difference]: Finished difference Result 2384 states and 2963 transitions. [2020-09-25 10:13:22,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:13:22,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 172 [2020-09-25 10:13:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:22,924 INFO L225 Difference]: With dead ends: 2384 [2020-09-25 10:13:22,925 INFO L226 Difference]: Without dead ends: 1552 [2020-09-25 10:13:22,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:13:22,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2020-09-25 10:13:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1507. [2020-09-25 10:13:22,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-09-25 10:13:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1796 transitions. [2020-09-25 10:13:22,981 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1796 transitions. Word has length 172 [2020-09-25 10:13:22,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:22,981 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 1796 transitions. [2020-09-25 10:13:22,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:22,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1796 transitions. [2020-09-25 10:13:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 10:13:22,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:22,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:22,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:22,988 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:22,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:22,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1456275438, now seen corresponding path program 1 times [2020-09-25 10:13:22,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:22,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619267844] [2020-09-25 10:13:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:23,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:23,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:23,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:27,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:28,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:28,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 10:13:28,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:13:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:13:28,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:28,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-25 10:13:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:28,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:28,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:28,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:28,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:28,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:13:28,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:28,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:28,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:28,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 10:13:28,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 10:13:28,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:28,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 10:13:28,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:28,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619267844] [2020-09-25 10:13:28,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:28,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:28,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571119343] [2020-09-25 10:13:28,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:28,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:28,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:28,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:28,478 INFO L87 Difference]: Start difference. First operand 1507 states and 1796 transitions. Second operand 8 states. [2020-09-25 10:13:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:30,900 INFO L93 Difference]: Finished difference Result 3073 states and 3845 transitions. [2020-09-25 10:13:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:13:30,901 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-09-25 10:13:30,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:30,915 INFO L225 Difference]: With dead ends: 3073 [2020-09-25 10:13:30,915 INFO L226 Difference]: Without dead ends: 2223 [2020-09-25 10:13:30,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:30,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2020-09-25 10:13:30,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2163. [2020-09-25 10:13:30,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2163 states. [2020-09-25 10:13:31,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2654 transitions. [2020-09-25 10:13:31,003 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2654 transitions. Word has length 189 [2020-09-25 10:13:31,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:31,004 INFO L479 AbstractCegarLoop]: Abstraction has 2163 states and 2654 transitions. [2020-09-25 10:13:31,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:31,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2654 transitions. [2020-09-25 10:13:31,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 10:13:31,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:31,009 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:31,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:31,010 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:31,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:31,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2121536478, now seen corresponding path program 1 times [2020-09-25 10:13:31,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:31,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620191322] [2020-09-25 10:13:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:31,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:36,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:36,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 10:13:36,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:13:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 10:13:36,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:36,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:13:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 10:13:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:36,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:36,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:36,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:36,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:36,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:36,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:13:36,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:36,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:36,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:36,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:36,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:36,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:36,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:36,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:36,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:36,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 10:13:36,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:36,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-25 10:13:36,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:36,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 10:13:36,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:36,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620191322] [2020-09-25 10:13:36,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:36,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:13:36,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407264947] [2020-09-25 10:13:36,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:13:36,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:36,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:13:36,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:13:36,898 INFO L87 Difference]: Start difference. First operand 2163 states and 2654 transitions. Second operand 11 states. [2020-09-25 10:13:39,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:39,746 INFO L93 Difference]: Finished difference Result 4255 states and 5494 transitions. [2020-09-25 10:13:39,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:13:39,747 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 203 [2020-09-25 10:13:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:39,759 INFO L225 Difference]: With dead ends: 4255 [2020-09-25 10:13:39,759 INFO L226 Difference]: Without dead ends: 2619 [2020-09-25 10:13:39,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:13:39,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2020-09-25 10:13:39,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2601. [2020-09-25 10:13:39,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2601 states. [2020-09-25 10:13:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3139 transitions. [2020-09-25 10:13:39,836 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3139 transitions. Word has length 203 [2020-09-25 10:13:39,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:39,837 INFO L479 AbstractCegarLoop]: Abstraction has 2601 states and 3139 transitions. [2020-09-25 10:13:39,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:13:39,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3139 transitions. [2020-09-25 10:13:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 10:13:39,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:39,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:39,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:13:39,846 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:39,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:39,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1516290193, now seen corresponding path program 1 times [2020-09-25 10:13:39,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:39,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082960450] [2020-09-25 10:13:39,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:39,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:41,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking...