/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:05:51,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:05:51,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:05:51,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:05:51,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:05:51,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:05:51,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:05:51,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:05:51,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:05:51,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:05:51,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:05:51,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:05:51,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:05:51,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:05:51,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:05:51,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:05:51,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:05:51,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:05:51,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:05:51,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:05:51,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:05:51,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:05:51,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:05:51,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:05:51,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:05:51,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:05:51,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:05:51,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:05:51,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:05:51,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:05:51,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:05:51,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:05:51,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:05:51,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:05:51,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:05:51,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:05:51,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:05:51,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:05:51,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:05:51,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:05:51,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:05:51,845 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 00:05:51,874 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:05:51,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:05:51,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:05:51,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:05:51,877 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:05:51,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:05:51,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:05:51,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:05:51,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:05:51,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:05:51,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:05:51,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:05:51,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:05:51,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:05:51,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:05:51,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:05:51,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:05:51,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:05:51,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:05:51,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:05:51,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:05:51,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:05:51,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:05:51,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:05:51,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:05:51,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:05:51,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:05:51,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:05:51,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:05:51,885 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:05:52,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:05:52,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:05:52,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:05:52,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:05:52,394 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:05:52,395 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-09-25 00:05:52,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f9eaab8f/ce705718a3ea44648b59c0f3bce42d53/FLAG073537404 [2020-09-25 00:05:53,012 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:05:53,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-09-25 00:05:53,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f9eaab8f/ce705718a3ea44648b59c0f3bce42d53/FLAG073537404 [2020-09-25 00:05:53,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f9eaab8f/ce705718a3ea44648b59c0f3bce42d53 [2020-09-25 00:05:53,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:05:53,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:05:53,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:05:53,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:05:53,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:05:53,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:05:53" (1/1) ... [2020-09-25 00:05:53,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b642b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:53, skipping insertion in model container [2020-09-25 00:05:53,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:05:53" (1/1) ... [2020-09-25 00:05:53,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:05:53,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:05:53,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:05:53,699 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:05:53,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:05:53,732 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:05:53,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:53 WrapperNode [2020-09-25 00:05:53,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:05:53,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:05:53,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:05:53,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:05:53,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:53" (1/1) ... [2020-09-25 00:05:53,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:53" (1/1) ... [2020-09-25 00:05:53,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:53" (1/1) ... [2020-09-25 00:05:53,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:53" (1/1) ... [2020-09-25 00:05:53,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:53" (1/1) ... [2020-09-25 00:05:53,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:53" (1/1) ... [2020-09-25 00:05:53,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:53" (1/1) ... [2020-09-25 00:05:53,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:05:53,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:05:53,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:05:53,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:05:53,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:53" (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 00:05:53,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:05:53,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:05:53,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:05:53,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:05:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:05:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:05:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:05:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:05:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:05:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:05:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:05:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:05:54,222 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:05:54,222 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:05:54,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:05:54 BoogieIcfgContainer [2020-09-25 00:05:54,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:05:54,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:05:54,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:05:54,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:05:54,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:05:53" (1/3) ... [2020-09-25 00:05:54,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6ab96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:05:54, skipping insertion in model container [2020-09-25 00:05:54,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:53" (2/3) ... [2020-09-25 00:05:54,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6ab96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:05:54, skipping insertion in model container [2020-09-25 00:05:54,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:05:54" (3/3) ... [2020-09-25 00:05:54,266 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.c [2020-09-25 00:05:54,278 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:05:54,289 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:05:54,310 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:05:54,340 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:05:54,340 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:05:54,340 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:05:54,341 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:05:54,341 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:05:54,341 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:05:54,341 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:05:54,341 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:05:54,361 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 00:05:54,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 00:05:54,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:54,369 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] [2020-09-25 00:05:54,370 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:54,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:54,376 INFO L82 PathProgramCache]: Analyzing trace with hash 341466613, now seen corresponding path program 1 times [2020-09-25 00:05:54,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:54,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626623696] [2020-09-25 00:05:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:54,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:54,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:54,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 00:05:54,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 00:05:54,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:54,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:54,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:05:54,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:05:54,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:05:54,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:54,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:54,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:54,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:54,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:54,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:05:54,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:54,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:54,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:54,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:54,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:54,675 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 00:05:54,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626623696] [2020-09-25 00:05:54,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:54,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:05:54,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504264521] [2020-09-25 00:05:54,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:05:54,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:54,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:05:54,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:05:54,707 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-09-25 00:05:54,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:54,848 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-09-25 00:05:54,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:05:54,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-09-25 00:05:54,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:54,863 INFO L225 Difference]: With dead ends: 51 [2020-09-25 00:05:54,863 INFO L226 Difference]: Without dead ends: 27 [2020-09-25 00:05:54,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:05:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-25 00:05:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-09-25 00:05:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 00:05:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-09-25 00:05:54,919 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 21 [2020-09-25 00:05:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:54,920 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-09-25 00:05:54,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:05:54,920 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-09-25 00:05:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 00:05:54,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:54,922 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] [2020-09-25 00:05:54,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:05:54,922 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:54,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:54,923 INFO L82 PathProgramCache]: Analyzing trace with hash 178703795, now seen corresponding path program 1 times [2020-09-25 00:05:54,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:54,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308637542] [2020-09-25 00:05:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:54,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:55,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:55,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:55,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:05:55,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:05:55,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-25 00:05:55,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:05:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:05:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:05:55,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:05:55,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:55,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:55,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:55,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:55,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:55,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:05:55,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:55,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:55,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:55,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:55,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:55,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308637542] [2020-09-25 00:05:55,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:55,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:05:55,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958801341] [2020-09-25 00:05:55,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:05:55,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:55,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:05:55,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:05:55,423 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2020-09-25 00:05:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:55,696 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-09-25 00:05:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:05:55,697 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-25 00:05:55,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:55,698 INFO L225 Difference]: With dead ends: 38 [2020-09-25 00:05:55,698 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 00:05:55,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:05:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 00:05:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-09-25 00:05:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 00:05:55,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-09-25 00:05:55,707 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2020-09-25 00:05:55,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:55,707 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-09-25 00:05:55,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:05:55,708 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-09-25 00:05:55,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 00:05:55,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:55,709 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:05:55,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:05:55,709 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:55,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:55,710 INFO L82 PathProgramCache]: Analyzing trace with hash 563687025, now seen corresponding path program 2 times [2020-09-25 00:05:55,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:55,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310119317] [2020-09-25 00:05:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:55,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:55,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:55,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:56,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:56,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 00:05:56,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:05:56,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-25 00:05:56,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:05:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:05:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:05:56,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:56,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:56,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:56,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:56,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:56,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:56,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:05:56,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:56,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:56,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:56,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:56,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:56,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310119317] [2020-09-25 00:05:56,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:56,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:05:56,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700497200] [2020-09-25 00:05:56,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:05:56,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:56,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:05:56,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:05:56,197 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2020-09-25 00:05:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:56,497 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-09-25 00:05:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:05:56,498 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-25 00:05:56,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:56,501 INFO L225 Difference]: With dead ends: 42 [2020-09-25 00:05:56,502 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 00:05:56,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:05:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 00:05:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-09-25 00:05:56,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 00:05:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-09-25 00:05:56,510 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 29 [2020-09-25 00:05:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:56,510 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-09-25 00:05:56,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:05:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-09-25 00:05:56,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 00:05:56,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:56,512 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:05:56,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:05:56,512 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:56,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:56,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1026490321, now seen corresponding path program 3 times [2020-09-25 00:05:56,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:56,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315842801] [2020-09-25 00:05:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:56,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:56,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:57,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 00:05:57,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:05:57,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-09-25 00:05:57,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:05:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:05:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:05:57,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:57,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:57,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:57,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:57,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:57,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:05:57,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:57,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:57,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:57,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:57,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315842801] [2020-09-25 00:05:57,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:57,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:05:57,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385809261] [2020-09-25 00:05:57,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:05:57,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:57,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:05:57,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:05:57,394 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 13 states. [2020-09-25 00:05:57,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:57,715 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-09-25 00:05:57,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 00:05:57,716 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-09-25 00:05:57,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:57,717 INFO L225 Difference]: With dead ends: 46 [2020-09-25 00:05:57,717 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 00:05:57,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:05:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 00:05:57,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-09-25 00:05:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 00:05:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-09-25 00:05:57,725 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 33 [2020-09-25 00:05:57,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:57,725 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-09-25 00:05:57,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:05:57,726 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-09-25 00:05:57,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 00:05:57,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:57,727 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:05:57,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:05:57,727 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:57,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:57,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2083373805, now seen corresponding path program 4 times [2020-09-25 00:05:57,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:57,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684634799] [2020-09-25 00:05:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:57,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:59,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:59,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 00:05:59,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:05:59,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1379 [2020-09-25 00:05:59,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:59,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:05:59,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:05:59,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:05:59,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:59,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:59,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:59,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:59,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:05:59,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:59,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:59,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:59,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:59,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684634799] [2020-09-25 00:05:59,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:59,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 00:05:59,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560031879] [2020-09-25 00:05:59,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 00:05:59,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:59,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 00:05:59,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:05:59,292 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 15 states. [2020-09-25 00:05:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:59,758 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-09-25 00:05:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 00:05:59,759 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2020-09-25 00:05:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:59,760 INFO L225 Difference]: With dead ends: 50 [2020-09-25 00:05:59,760 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 00:05:59,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2020-09-25 00:05:59,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 00:05:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-09-25 00:05:59,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 00:05:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-09-25 00:05:59,772 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 37 [2020-09-25 00:05:59,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:59,774 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-09-25 00:05:59,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 00:05:59,774 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-09-25 00:05:59,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 00:05:59,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:59,776 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:05:59,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:05:59,777 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:59,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:59,777 INFO L82 PathProgramCache]: Analyzing trace with hash -540084565, now seen corresponding path program 5 times [2020-09-25 00:05:59,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:59,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625502029] [2020-09-25 00:05:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:59,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:59,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:00,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:00,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:00,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:00,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:06:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:06:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-09-25 00:06:00,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:06:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 00:06:00,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:01,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:01,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:01,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:01,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:01,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:01,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:06:01,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:01,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:01,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:01,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625502029] [2020-09-25 00:06:01,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:01,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 00:06:01,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460465684] [2020-09-25 00:06:01,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 00:06:01,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:01,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 00:06:01,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:06:01,165 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 17 states. [2020-09-25 00:06:01,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:01,640 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-25 00:06:01,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:06:01,641 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-09-25 00:06:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:01,642 INFO L225 Difference]: With dead ends: 54 [2020-09-25 00:06:01,642 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 00:06:01,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2020-09-25 00:06:01,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 00:06:01,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-09-25 00:06:01,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 00:06:01,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-09-25 00:06:01,649 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 41 [2020-09-25 00:06:01,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:01,650 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-09-25 00:06:01,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 00:06:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-09-25 00:06:01,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 00:06:01,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:01,651 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:01,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:06:01,652 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:01,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:01,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1679039337, now seen corresponding path program 6 times [2020-09-25 00:06:01,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:01,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417356471] [2020-09-25 00:06:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:01,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:01,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:01,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:02,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:02,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:02,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:02,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:02,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 00:06:02,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 00:06:02,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1185 [2020-09-25 00:06:02,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:06:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:06:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:03,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:03,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:03,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:03,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:03,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:03,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:03,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417356471] [2020-09-25 00:06:03,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:03,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 00:06:03,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349732484] [2020-09-25 00:06:03,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 00:06:03,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:03,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 00:06:03,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:06:03,071 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 19 states. [2020-09-25 00:06:03,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:03,650 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-09-25 00:06:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:06:03,651 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-09-25 00:06:03,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:03,652 INFO L225 Difference]: With dead ends: 58 [2020-09-25 00:06:03,652 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 00:06:03,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 00:06:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 00:06:03,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-09-25 00:06:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 00:06:03,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-09-25 00:06:03,659 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 45 [2020-09-25 00:06:03,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:03,659 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-09-25 00:06:03,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 00:06:03,660 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-09-25 00:06:03,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 00:06:03,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:03,661 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:03,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:06:03,661 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:03,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:03,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1134342439, now seen corresponding path program 7 times [2020-09-25 00:06:03,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:03,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952237866] [2020-09-25 00:06:03,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:03,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:03,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:03,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:03,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:04,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:04,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:05,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:05,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:06:05,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:06:05,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1486 [2020-09-25 00:06:05,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:06:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 00:06:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:05,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:05,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:05,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:05,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:05,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:05,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:05,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:05,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952237866] [2020-09-25 00:06:05,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:05,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 00:06:05,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949878951] [2020-09-25 00:06:05,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 00:06:05,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:05,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 00:06:05,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:06:05,442 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 21 states. [2020-09-25 00:06:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:06,162 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-09-25 00:06:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 00:06:06,162 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-09-25 00:06:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:06,164 INFO L225 Difference]: With dead ends: 62 [2020-09-25 00:06:06,164 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 00:06:06,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2020-09-25 00:06:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 00:06:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-09-25 00:06:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 00:06:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-09-25 00:06:06,171 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 49 [2020-09-25 00:06:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:06,171 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-09-25 00:06:06,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 00:06:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-09-25 00:06:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 00:06:06,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:06,172 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:06,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:06:06,173 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:06,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:06,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1565013989, now seen corresponding path program 8 times [2020-09-25 00:06:06,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:06,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740440962] [2020-09-25 00:06:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:06,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:06,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:07,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:07,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:08,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:08,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 00:06:08,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:06:08,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2352 [2020-09-25 00:06:08,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:08,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 00:06:08,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:08,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 00:06:08,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:08,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:08,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:08,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:08,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:08,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:08,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:08,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:08,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:08,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:08,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:08,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740440962] [2020-09-25 00:06:08,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:08,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 00:06:08,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059276111] [2020-09-25 00:06:08,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 00:06:08,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:08,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 00:06:08,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:06:08,839 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 23 states. [2020-09-25 00:06:09,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:09,822 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-09-25 00:06:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 00:06:09,822 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2020-09-25 00:06:09,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:09,823 INFO L225 Difference]: With dead ends: 66 [2020-09-25 00:06:09,823 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 00:06:09,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2020-09-25 00:06:09,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 00:06:09,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-09-25 00:06:09,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 00:06:09,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-09-25 00:06:09,834 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 53 [2020-09-25 00:06:09,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:09,834 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-09-25 00:06:09,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 00:06:09,835 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-09-25 00:06:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 00:06:09,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:09,836 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:09,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:06:09,836 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:09,837 INFO L82 PathProgramCache]: Analyzing trace with hash 339095459, now seen corresponding path program 9 times [2020-09-25 00:06:09,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:09,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384244267] [2020-09-25 00:06:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:09,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:11,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:12,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:12,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:12,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 00:06:12,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:06:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2734 [2020-09-25 00:06:12,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 00:06:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 00:06:12,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:13,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:13,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:13,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:13,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:06:13,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:13,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384244267] [2020-09-25 00:06:13,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:13,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 00:06:13,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328858172] [2020-09-25 00:06:13,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 00:06:13,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:13,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 00:06:13,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2020-09-25 00:06:13,037 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 25 states. [2020-09-25 00:06:14,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:14,233 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2020-09-25 00:06:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 00:06:14,233 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2020-09-25 00:06:14,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:14,234 INFO L225 Difference]: With dead ends: 70 [2020-09-25 00:06:14,234 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 00:06:14,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2020-09-25 00:06:14,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 00:06:14,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-09-25 00:06:14,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 00:06:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-09-25 00:06:14,241 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 57 [2020-09-25 00:06:14,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:14,242 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-09-25 00:06:14,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 00:06:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-09-25 00:06:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 00:06:14,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:14,243 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:14,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 00:06:14,243 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:14,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:14,244 INFO L82 PathProgramCache]: Analyzing trace with hash 801511521, now seen corresponding path program 10 times [2020-09-25 00:06:14,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:14,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765086997] [2020-09-25 00:06:14,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:14,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:14,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:14,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:14,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:15,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:15,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:16,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:16,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:16,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:16,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:17,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:18,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:18,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 00:06:18,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 00:06:18,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4664 [2020-09-25 00:06:18,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 00:06:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 00:06:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:19,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:19,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:19,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:19,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:19,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:19,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:19,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:19,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765086997] [2020-09-25 00:06:19,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:19,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 00:06:19,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067960416] [2020-09-25 00:06:19,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 00:06:19,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:19,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 00:06:19,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2020-09-25 00:06:19,472 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 27 states. [2020-09-25 00:06:21,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:21,074 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-09-25 00:06:21,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 00:06:21,074 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-09-25 00:06:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:21,075 INFO L225 Difference]: With dead ends: 62 [2020-09-25 00:06:21,075 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:06:21,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=360, Invalid=1992, Unknown=0, NotChecked=0, Total=2352 [2020-09-25 00:06:21,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:06:21,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:06:21,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:06:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:06:21,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-09-25 00:06:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:21,078 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:06:21,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 00:06:21,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:06:21,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:06:21,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 00:06:21,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:06:21,328 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2020-09-25 00:06:21,334 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:06:21,334 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 00:06:21,334 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_144~0 |old(~__return_144~0)|)) [2020-09-25 00:06:21,335 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:06:21,335 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:06:21,335 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:06:21,335 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:06:21,335 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:06:21,335 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 00:06:21,336 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 00:06:21,336 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 00:06:21,336 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 00:06:21,336 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 00:06:21,336 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 00:06:21,336 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 00:06:21,336 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 58) no Hoare annotation was computed. [2020-09-25 00:06:21,337 INFO L268 CegarLoopResult]: For program point L23(lines 23 56) no Hoare annotation was computed. [2020-09-25 00:06:21,337 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 00:06:21,337 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 00:06:21,337 INFO L268 CegarLoopResult]: For program point L17(lines 17 57) no Hoare annotation was computed. [2020-09-25 00:06:21,338 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 00:06:21,338 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 00:06:21,338 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 58) no Hoare annotation was computed. [2020-09-25 00:06:21,338 INFO L268 CegarLoopResult]: For program point L44(lines 44 53) no Hoare annotation was computed. [2020-09-25 00:06:21,338 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 00:06:21,338 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 00:06:21,339 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 00:06:21,339 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 00:06:21,339 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-09-25 00:06:21,340 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 58) the Hoare annotation is: (= |old(~__return_144~0)| ~__return_144~0) [2020-09-25 00:06:21,340 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 00:06:21,340 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 00:06:21,340 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 00:06:21,341 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 00:06:21,341 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 00:06:21,341 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 00:06:21,341 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 00:06:21,341 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 00:06:21,342 INFO L264 CegarLoopResult]: At program point L35(lines 28 56) the Hoare annotation is: (let ((.cse0 (= |old(~__return_144~0)| ~__return_144~0)) (.cse1 (<= main_~main__x~0 (+ main_~main__y~0 15)))) (or (and .cse0 (<= (+ main_~main__x~0 56) (* 3 main_~main__y~0)) .cse1) (let ((.cse2 (+ main_~main__x~0 50))) (and (<= 0 .cse2) .cse0 (<= .cse2 0))) (and (<= 0 (+ main_~main__y~0 (* 2 main_~main__x~0) (* 3 (div (+ (* main_~main__y~0 (- 1)) (* main_~main__x~0 (- 1)) (- 49)) 2)) 99)) (<= (+ main_~main__x~0 51) main_~main__y~0) .cse0) (and (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0)) (<= (+ main_~main__y~0 main_~main__x~0) (+ (* 3 (div (+ main_~main__x~0 (- 49)) 2)) 100)) .cse0 .cse1) (and (<= (+ main_~main__x~0 5) (* 6 main_~main__y~0)) .cse0 .cse1))) [2020-09-25 00:06:21,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:06:21 BoogieIcfgContainer [2020-09-25 00:06:21,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:06:21,378 INFO L168 Benchmark]: Toolchain (without parser) took 27985.62 ms. Allocated memory was 140.0 MB in the beginning and 385.4 MB in the end (delta: 245.4 MB). Free memory was 102.4 MB in the beginning and 333.3 MB in the end (delta: -230.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:21,380 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:06:21,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.17 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:21,391 INFO L168 Benchmark]: Boogie Preprocessor took 116.44 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 181.4 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:21,392 INFO L168 Benchmark]: RCFGBuilder took 390.11 ms. Allocated memory is still 202.9 MB. Free memory was 181.4 MB in the beginning and 167.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:21,395 INFO L168 Benchmark]: TraceAbstraction took 27129.65 ms. Allocated memory was 202.9 MB in the beginning and 385.4 MB in the end (delta: 182.5 MB). Free memory was 167.5 MB in the beginning and 333.3 MB in the end (delta: -165.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:21,402 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.17 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.44 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 181.4 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 390.11 ms. Allocated memory is still 202.9 MB. Free memory was 181.4 MB in the beginning and 167.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27129.65 ms. Allocated memory was 202.9 MB in the beginning and 385.4 MB in the end (delta: 182.5 MB). Free memory was 167.5 MB in the beginning and 333.3 MB in the end (delta: -165.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((\old(__return_144) == __return_144 && main__x + 56 <= 3 * main__y) && main__x <= main__y + 15) || ((0 <= main__x + 50 && \old(__return_144) == __return_144) && main__x + 50 <= 0)) || ((0 <= main__y + 2 * main__x + 3 * ((main__y * -1 + main__x * -1 + -49) / 2) + 99 && main__x + 51 <= main__y) && \old(__return_144) == __return_144)) || (((main__x + 53 <= 2 * main__y && main__y + main__x <= 3 * ((main__x + -49) / 2) + 100) && \old(__return_144) == __return_144) && main__x <= main__y + 15)) || ((main__x + 5 <= 6 * main__y && \old(__return_144) == __return_144) && main__x <= main__y + 15) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.7s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 645 SDslu, 639 SDs, 0 SdLazy, 4032 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 354 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 15 NumberOfFragments, 117 HoareAnnotationTreeSize, 5 FomulaSimplifications, 128 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 97 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 19.0s InterpolantComputationTime, 451 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 440 ConstructedInterpolants, 0 QuantifiedInterpolants, 102484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/715 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...