/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:26:17,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:26:17,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:26:17,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:26:17,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:26:17,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:26:17,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:26:17,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:26:17,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:26:17,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:26:17,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:26:17,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:26:17,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:26:17,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:26:17,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:26:17,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:26:17,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:26:17,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:26:17,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:26:17,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:26:17,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:26:17,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:26:17,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:26:17,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:26:17,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:26:17,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:26:17,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:26:17,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:26:17,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:26:17,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:26:17,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:26:17,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:26:17,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:26:17,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:26:17,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:26:17,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:26:17,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:26:17,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:26:17,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:26:17,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:26:17,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:26:17,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:26:17,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:26:17,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:26:17,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:26:17,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:26:17,199 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:26:17,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:26:17,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:26:17,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:26:17,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:26:17,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:26:17,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:26:17,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:26:17,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:26:17,202 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:26:17,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:26:17,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:26:17,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:26:17,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:26:17,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:26:17,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:26:17,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:26:17,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:26:17,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:26:17,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:26:17,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:26:17,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:26:17,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:26:17,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:26:17,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:26:17,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:26:17,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:26:17,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:26:17,777 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:26:17,782 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:26:17,782 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:26:17,784 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-09-25 13:26:17,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/452222eaf/646d425b1ce14b50a197b66d85fd21fb/FLAG9a1d30f24 [2020-09-25 13:26:18,469 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:26:18,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-09-25 13:26:18,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/452222eaf/646d425b1ce14b50a197b66d85fd21fb/FLAG9a1d30f24 [2020-09-25 13:26:18,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/452222eaf/646d425b1ce14b50a197b66d85fd21fb [2020-09-25 13:26:18,797 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:26:18,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:26:18,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:26:18,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:26:18,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:26:18,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:26:18" (1/1) ... [2020-09-25 13:26:18,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d972e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:18, skipping insertion in model container [2020-09-25 13:26:18,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:26:18" (1/1) ... [2020-09-25 13:26:18,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:26:18,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:26:19,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:26:19,093 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:26:19,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:26:19,141 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:26:19,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:19 WrapperNode [2020-09-25 13:26:19,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:26:19,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:26:19,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:26:19,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:26:19,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:19" (1/1) ... [2020-09-25 13:26:19,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:19" (1/1) ... [2020-09-25 13:26:19,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:19" (1/1) ... [2020-09-25 13:26:19,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:19" (1/1) ... [2020-09-25 13:26:19,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:19" (1/1) ... [2020-09-25 13:26:19,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:19" (1/1) ... [2020-09-25 13:26:19,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:19" (1/1) ... [2020-09-25 13:26:19,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:26:19,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:26:19,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:26:19,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:26:19,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:26:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:26:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:26:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:26:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:26:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:26:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:26:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:26:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:26:19,768 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:26:19,768 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:26:19,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:26:19 BoogieIcfgContainer [2020-09-25 13:26:19,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:26:19,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:26:19,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:26:19,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:26:19,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:26:18" (1/3) ... [2020-09-25 13:26:19,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc66161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:26:19, skipping insertion in model container [2020-09-25 13:26:19,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:19" (2/3) ... [2020-09-25 13:26:19,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc66161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:26:19, skipping insertion in model container [2020-09-25 13:26:19,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:26:19" (3/3) ... [2020-09-25 13:26:19,793 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-09-25 13:26:19,806 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:26:19,818 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:26:19,842 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:26:19,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:26:19,874 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:26:19,874 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:26:19,874 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:26:19,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:26:19,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:26:19,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:26:19,875 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:26:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-09-25 13:26:19,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 13:26:19,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:19,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:19,909 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:19,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:19,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1400694048, now seen corresponding path program 1 times [2020-09-25 13:26:19,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:19,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581946499] [2020-09-25 13:26:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:20,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:26:20,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:20,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 13:26:20,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:20,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:20,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:20,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 13:26:20,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:26:20,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 13:26:20,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:20,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:20,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:20,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:20,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:26:20,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:20,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:20,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:20,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581946499] [2020-09-25 13:26:20,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:20,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:20,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491175865] [2020-09-25 13:26:20,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:20,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:20,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:20,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:20,424 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 3 states. [2020-09-25 13:26:20,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:20,499 INFO L93 Difference]: Finished difference Result 169 states and 229 transitions. [2020-09-25 13:26:20,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:20,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-09-25 13:26:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:20,523 INFO L225 Difference]: With dead ends: 169 [2020-09-25 13:26:20,524 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 13:26:20,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 13:26:20,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-09-25 13:26:20,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 13:26:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions. [2020-09-25 13:26:20,610 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 49 [2020-09-25 13:26:20,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:20,611 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions. [2020-09-25 13:26:20,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:20,611 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions. [2020-09-25 13:26:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 13:26:20,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:20,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:20,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:26:20,614 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:20,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:20,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1290717684, now seen corresponding path program 1 times [2020-09-25 13:26:20,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:20,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675005939] [2020-09-25 13:26:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:20,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 13:26:20,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:20,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 13:26:20,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:20,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:20,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:20,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 13:26:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:26:20,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:20,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:20,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:20,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:20,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:20,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:20,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:20,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:20,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:20,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675005939] [2020-09-25 13:26:20,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:20,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:20,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252661937] [2020-09-25 13:26:20,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:20,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:20,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:20,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:20,815 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand 3 states. [2020-09-25 13:26:20,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:20,839 INFO L93 Difference]: Finished difference Result 135 states and 175 transitions. [2020-09-25 13:26:20,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:20,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-09-25 13:26:20,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:20,842 INFO L225 Difference]: With dead ends: 135 [2020-09-25 13:26:20,843 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 13:26:20,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 13:26:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 110. [2020-09-25 13:26:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 13:26:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2020-09-25 13:26:20,858 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 50 [2020-09-25 13:26:20,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:20,858 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2020-09-25 13:26:20,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2020-09-25 13:26:20,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 13:26:20,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:20,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:20,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:26:20,862 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:20,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:20,862 INFO L82 PathProgramCache]: Analyzing trace with hash 472087846, now seen corresponding path program 1 times [2020-09-25 13:26:20,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:20,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490631883] [2020-09-25 13:26:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:20,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:20,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 13:26:20,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:20,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 13:26:20,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:20,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:20,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 13:26:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:26:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:21,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:21,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:21,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:21,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:21,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:21,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490631883] [2020-09-25 13:26:21,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:21,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:21,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200685817] [2020-09-25 13:26:21,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:21,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:21,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:21,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,032 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 3 states. [2020-09-25 13:26:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:21,071 INFO L93 Difference]: Finished difference Result 266 states and 357 transitions. [2020-09-25 13:26:21,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:21,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-09-25 13:26:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:21,088 INFO L225 Difference]: With dead ends: 266 [2020-09-25 13:26:21,088 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 13:26:21,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 13:26:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2020-09-25 13:26:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-25 13:26:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 240 transitions. [2020-09-25 13:26:21,105 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 240 transitions. Word has length 50 [2020-09-25 13:26:21,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:21,105 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 240 transitions. [2020-09-25 13:26:21,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 240 transitions. [2020-09-25 13:26:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:26:21,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:21,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:21,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:26:21,108 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:21,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:21,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1750067028, now seen corresponding path program 1 times [2020-09-25 13:26:21,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:21,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768212816] [2020-09-25 13:26:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 13:26:21,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:21,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 13:26:21,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 13:26:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:26:21,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:21,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:21,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:21,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:21,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:21,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:21,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768212816] [2020-09-25 13:26:21,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:21,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:21,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872606802] [2020-09-25 13:26:21,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:21,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:21,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:21,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,210 INFO L87 Difference]: Start difference. First operand 183 states and 240 transitions. Second operand 3 states. [2020-09-25 13:26:21,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:21,248 INFO L93 Difference]: Finished difference Result 479 states and 646 transitions. [2020-09-25 13:26:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:21,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-09-25 13:26:21,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:21,252 INFO L225 Difference]: With dead ends: 479 [2020-09-25 13:26:21,252 INFO L226 Difference]: Without dead ends: 325 [2020-09-25 13:26:21,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-25 13:26:21,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2020-09-25 13:26:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-25 13:26:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 426 transitions. [2020-09-25 13:26:21,286 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 426 transitions. Word has length 51 [2020-09-25 13:26:21,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:21,286 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 426 transitions. [2020-09-25 13:26:21,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:21,286 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 426 transitions. [2020-09-25 13:26:21,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:26:21,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:21,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:21,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:26:21,289 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:21,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:21,290 INFO L82 PathProgramCache]: Analyzing trace with hash -17356107, now seen corresponding path program 1 times [2020-09-25 13:26:21,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:21,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034221058] [2020-09-25 13:26:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 13:26:21,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:21,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 13:26:21,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:21,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 13:26:21,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:26:21,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:21,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:21,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:21,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:21,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:21,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034221058] [2020-09-25 13:26:21,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:21,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:21,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688551903] [2020-09-25 13:26:21,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:21,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:21,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:21,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,387 INFO L87 Difference]: Start difference. First operand 323 states and 426 transitions. Second operand 3 states. [2020-09-25 13:26:21,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:21,406 INFO L93 Difference]: Finished difference Result 399 states and 528 transitions. [2020-09-25 13:26:21,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:21,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-09-25 13:26:21,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:21,410 INFO L225 Difference]: With dead ends: 399 [2020-09-25 13:26:21,410 INFO L226 Difference]: Without dead ends: 397 [2020-09-25 13:26:21,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-09-25 13:26:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 323. [2020-09-25 13:26:21,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-25 13:26:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 422 transitions. [2020-09-25 13:26:21,429 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 422 transitions. Word has length 51 [2020-09-25 13:26:21,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:21,430 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 422 transitions. [2020-09-25 13:26:21,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 422 transitions. [2020-09-25 13:26:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 13:26:21,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:21,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:21,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:26:21,433 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:21,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:21,433 INFO L82 PathProgramCache]: Analyzing trace with hash 802147488, now seen corresponding path program 1 times [2020-09-25 13:26:21,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:21,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992359260] [2020-09-25 13:26:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 13:26:21,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:21,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:26:21,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 13:26:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:26:21,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:21,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:21,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:21,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:21,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:21,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:26:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:21,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992359260] [2020-09-25 13:26:21,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:21,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:21,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628712027] [2020-09-25 13:26:21,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:21,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:21,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:21,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,536 INFO L87 Difference]: Start difference. First operand 323 states and 422 transitions. Second operand 3 states. [2020-09-25 13:26:21,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:21,562 INFO L93 Difference]: Finished difference Result 395 states and 516 transitions. [2020-09-25 13:26:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:21,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-25 13:26:21,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:21,568 INFO L225 Difference]: With dead ends: 395 [2020-09-25 13:26:21,568 INFO L226 Difference]: Without dead ends: 393 [2020-09-25 13:26:21,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-09-25 13:26:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323. [2020-09-25 13:26:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-25 13:26:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 418 transitions. [2020-09-25 13:26:21,598 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 418 transitions. Word has length 52 [2020-09-25 13:26:21,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:21,599 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 418 transitions. [2020-09-25 13:26:21,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 418 transitions. [2020-09-25 13:26:21,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 13:26:21,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:21,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:21,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:26:21,606 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:21,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1582250918, now seen corresponding path program 1 times [2020-09-25 13:26:21,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:21,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804072391] [2020-09-25 13:26:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 13:26:21,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:21,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 13:26:21,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 13:26:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:26:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:21,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:21,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:21,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:21,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:21,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:21,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804072391] [2020-09-25 13:26:21,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:21,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:21,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218563749] [2020-09-25 13:26:21,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:21,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:21,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:21,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,733 INFO L87 Difference]: Start difference. First operand 323 states and 418 transitions. Second operand 3 states. [2020-09-25 13:26:21,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:21,776 INFO L93 Difference]: Finished difference Result 887 states and 1164 transitions. [2020-09-25 13:26:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:21,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-25 13:26:21,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:21,781 INFO L225 Difference]: With dead ends: 887 [2020-09-25 13:26:21,781 INFO L226 Difference]: Without dead ends: 593 [2020-09-25 13:26:21,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-09-25 13:26:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-09-25 13:26:21,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-25 13:26:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 758 transitions. [2020-09-25 13:26:21,819 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 758 transitions. Word has length 52 [2020-09-25 13:26:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:21,819 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 758 transitions. [2020-09-25 13:26:21,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:21,821 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 758 transitions. [2020-09-25 13:26:21,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 13:26:21,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:21,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:21,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:26:21,825 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:21,826 INFO L82 PathProgramCache]: Analyzing trace with hash 436955529, now seen corresponding path program 1 times [2020-09-25 13:26:21,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:21,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124343029] [2020-09-25 13:26:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 13:26:21,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:21,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 13:26:21,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:21,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 13:26:21,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:26:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:21,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:21,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:21,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:26:21,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:21,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124343029] [2020-09-25 13:26:21,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:21,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:21,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862731560] [2020-09-25 13:26:21,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:21,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:21,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:21,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,949 INFO L87 Difference]: Start difference. First operand 591 states and 758 transitions. Second operand 3 states. [2020-09-25 13:26:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:21,977 INFO L93 Difference]: Finished difference Result 715 states and 912 transitions. [2020-09-25 13:26:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:21,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-09-25 13:26:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:21,982 INFO L225 Difference]: With dead ends: 715 [2020-09-25 13:26:21,982 INFO L226 Difference]: Without dead ends: 713 [2020-09-25 13:26:21,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-09-25 13:26:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 591. [2020-09-25 13:26:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-25 13:26:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 750 transitions. [2020-09-25 13:26:22,003 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 750 transitions. Word has length 53 [2020-09-25 13:26:22,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:22,004 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 750 transitions. [2020-09-25 13:26:22,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 750 transitions. [2020-09-25 13:26:22,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 13:26:22,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:22,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:22,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:26:22,006 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:22,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1804891768, now seen corresponding path program 1 times [2020-09-25 13:26:22,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:22,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418086400] [2020-09-25 13:26:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:22,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:22,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 13:26:22,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:22,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 13:26:22,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:22,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:22,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:22,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 13:26:22,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:26:22,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:22,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:22,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:22,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:22,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:22,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:22,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:22,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:22,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418086400] [2020-09-25 13:26:22,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:22,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:22,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919197615] [2020-09-25 13:26:22,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:22,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:22,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:22,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:22,114 INFO L87 Difference]: Start difference. First operand 591 states and 750 transitions. Second operand 3 states. [2020-09-25 13:26:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:22,140 INFO L93 Difference]: Finished difference Result 1667 states and 2128 transitions. [2020-09-25 13:26:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:22,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-09-25 13:26:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:22,147 INFO L225 Difference]: With dead ends: 1667 [2020-09-25 13:26:22,147 INFO L226 Difference]: Without dead ends: 1105 [2020-09-25 13:26:22,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:22,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-09-25 13:26:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1103. [2020-09-25 13:26:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-25 13:26:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1374 transitions. [2020-09-25 13:26:22,176 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1374 transitions. Word has length 53 [2020-09-25 13:26:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:22,176 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1374 transitions. [2020-09-25 13:26:22,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:22,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1374 transitions. [2020-09-25 13:26:22,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 13:26:22,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:22,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:22,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:26:22,179 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:22,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:22,179 INFO L82 PathProgramCache]: Analyzing trace with hash 2000907060, now seen corresponding path program 1 times [2020-09-25 13:26:22,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:22,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543979241] [2020-09-25 13:26:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:22,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:26:22,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:26:22,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:22,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 13:26:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:26:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:22,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:22,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:22,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:22,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:22,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:22,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:22,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:22,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543979241] [2020-09-25 13:26:22,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:22,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:22,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429360459] [2020-09-25 13:26:22,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:22,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:22,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:22,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:22,256 INFO L87 Difference]: Start difference. First operand 1103 states and 1374 transitions. Second operand 3 states. [2020-09-25 13:26:22,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:22,279 INFO L93 Difference]: Finished difference Result 1315 states and 1616 transitions. [2020-09-25 13:26:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:22,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-09-25 13:26:22,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:22,286 INFO L225 Difference]: With dead ends: 1315 [2020-09-25 13:26:22,286 INFO L226 Difference]: Without dead ends: 1313 [2020-09-25 13:26:22,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:22,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-09-25 13:26:22,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1103. [2020-09-25 13:26:22,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-25 13:26:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1358 transitions. [2020-09-25 13:26:22,317 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1358 transitions. Word has length 54 [2020-09-25 13:26:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:22,318 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1358 transitions. [2020-09-25 13:26:22,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:22,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1358 transitions. [2020-09-25 13:26:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 13:26:22,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:22,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:22,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:26:22,320 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:22,320 INFO L82 PathProgramCache]: Analyzing trace with hash -116823154, now seen corresponding path program 1 times [2020-09-25 13:26:22,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:22,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440677646] [2020-09-25 13:26:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:22,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:26:22,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:22,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:26:22,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:22,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 13:26:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:26:22,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:22,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:22,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:22,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:22,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:22,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:22,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:22,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440677646] [2020-09-25 13:26:22,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:22,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:22,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239998517] [2020-09-25 13:26:22,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:22,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:22,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:22,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:22,394 INFO L87 Difference]: Start difference. First operand 1103 states and 1358 transitions. Second operand 3 states. [2020-09-25 13:26:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:22,429 INFO L93 Difference]: Finished difference Result 3153 states and 3887 transitions. [2020-09-25 13:26:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:22,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-09-25 13:26:22,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:22,435 INFO L225 Difference]: With dead ends: 3153 [2020-09-25 13:26:22,436 INFO L226 Difference]: Without dead ends: 1103 [2020-09-25 13:26:22,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:22,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-09-25 13:26:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1103. [2020-09-25 13:26:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-25 13:26:22,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1294 transitions. [2020-09-25 13:26:22,465 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1294 transitions. Word has length 54 [2020-09-25 13:26:22,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:22,466 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1294 transitions. [2020-09-25 13:26:22,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:22,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1294 transitions. [2020-09-25 13:26:22,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 13:26:22,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:22,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:22,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:26:22,468 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:22,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1056202659, now seen corresponding path program 1 times [2020-09-25 13:26:22,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:22,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247070330] [2020-09-25 13:26:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:22,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:22,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 13:26:22,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:22,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 13:26:22,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:22,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 13:26:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:26:22,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:22,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:22,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:22,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:22,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:22,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:22,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:22,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:22,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:22,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247070330] [2020-09-25 13:26:22,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:22,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:22,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420252914] [2020-09-25 13:26:22,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:22,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:22,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:22,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:22,541 INFO L87 Difference]: Start difference. First operand 1103 states and 1294 transitions. Second operand 3 states. [2020-09-25 13:26:22,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:22,557 INFO L93 Difference]: Finished difference Result 1103 states and 1294 transitions. [2020-09-25 13:26:22,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:22,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-09-25 13:26:22,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:22,558 INFO L225 Difference]: With dead ends: 1103 [2020-09-25 13:26:22,558 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 13:26:22,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:22,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 13:26:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 13:26:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 13:26:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 13:26:22,561 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-09-25 13:26:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:22,562 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 13:26:22,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:22,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 13:26:22,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 13:26:22,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:26:22,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 13:26:22,593 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 13:26:22,594 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:26:22,594 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:26:22,594 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 13:26:22,594 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 13:26:22,594 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 13:26:22,594 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-09-25 13:26:22,594 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-09-25 13:26:22,594 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 13:26:22,595 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 13:26:22,595 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-25 13:26:22,595 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-09-25 13:26:22,595 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 13:26:22,595 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-25 13:26:22,595 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-25 13:26:22,595 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-09-25 13:26:22,596 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 13:26:22,596 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 13:26:22,596 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 13:26:22,596 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-09-25 13:26:22,596 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-09-25 13:26:22,596 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 13:26:22,596 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 13:26:22,596 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 13:26:22,596 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 13:26:22,597 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 13:26:22,597 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 13:26:22,597 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-25 13:26:22,597 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-09-25 13:26:22,597 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 13:26:22,597 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-09-25 13:26:22,597 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-09-25 13:26:22,597 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 13:26:22,598 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-09-25 13:26:22,598 INFO L268 CegarLoopResult]: For program point L63(line 63) no Hoare annotation was computed. [2020-09-25 13:26:22,598 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-09-25 13:26:22,598 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-09-25 13:26:22,598 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-25 13:26:22,598 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 13:26:22,598 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 13:26:22,599 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 13:26:22,599 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 13:26:22,599 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 13:26:22,599 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-09-25 13:26:22,599 INFO L268 CegarLoopResult]: For program point L89(line 89) no Hoare annotation was computed. [2020-09-25 13:26:22,599 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 13:26:22,599 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 13:26:22,599 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 13:26:22,600 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-09-25 13:26:22,600 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-09-25 13:26:22,600 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 13:26:22,600 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 13:26:22,600 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-09-25 13:26:22,600 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-09-25 13:26:22,600 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 13:26:22,600 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 13:26:22,601 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 13:26:22,601 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-25 13:26:22,601 INFO L268 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-09-25 13:26:22,601 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 13:26:22,601 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 13:26:22,601 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 13:26:22,601 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-25 13:26:22,602 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 13:26:22,602 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 13:26:22,602 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 13:26:22,602 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 13:26:22,602 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 13:26:22,602 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-25 13:26:22,602 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 13:26:22,602 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-09-25 13:26:22,603 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 13:26:22,603 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-09-25 13:26:22,603 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 13:26:22,603 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 13:26:22,603 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 13:26:22,603 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 13:26:22,603 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 13:26:22,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:26:22 BoogieIcfgContainer [2020-09-25 13:26:22,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:26:22,634 INFO L168 Benchmark]: Toolchain (without parser) took 3828.58 ms. Allocated memory was 139.5 MB in the beginning and 246.9 MB in the end (delta: 107.5 MB). Free memory was 102.9 MB in the beginning and 110.3 MB in the end (delta: -7.4 MB). Peak memory consumption was 100.0 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:22,637 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 13:26:22,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.91 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 92.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:22,639 INFO L168 Benchmark]: Boogie Preprocessor took 128.45 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.2 MB in the beginning and 179.9 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:22,640 INFO L168 Benchmark]: RCFGBuilder took 503.18 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 161.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:22,644 INFO L168 Benchmark]: TraceAbstraction took 2848.76 ms. Allocated memory was 201.9 MB in the beginning and 246.9 MB in the end (delta: 45.1 MB). Free memory was 161.0 MB in the beginning and 110.3 MB in the end (delta: 50.6 MB). Peak memory consumption was 95.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:22,652 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.91 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 92.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.45 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.2 MB in the beginning and 179.9 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 503.18 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 161.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2848.76 ms. Allocated memory was 201.9 MB in the beginning and 246.9 MB in the end (delta: 45.1 MB). Free memory was 161.0 MB in the beginning and 110.3 MB in the end (delta: 50.6 MB). Peak memory consumption was 95.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: 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: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1351 SDtfs, 477 SDslu, 950 SDs, 0 SdLazy, 59 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1103occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 509 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 73 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 624 NumberOfCodeBlocks, 624 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 39212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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...