/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:02:20,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:02:20,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:02:20,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:02:20,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:02:20,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:02:20,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:02:20,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:02:20,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:02:20,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:02:20,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:02:20,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:02:20,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:02:20,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:02:20,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:02:20,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:02:20,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:02:20,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:02:20,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:02:20,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:02:20,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:02:20,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:02:20,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:02:20,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:02:20,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:02:20,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:02:20,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:02:20,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:02:20,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:02:20,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:02:20,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:02:20,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:02:20,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:02:20,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:02:20,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:02:20,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:02:20,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:02:20,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:02:20,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:02:20,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:02:20,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:02:20,097 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 [2020-10-14 23:02:20,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:02:20,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:02:20,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:02:20,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:02:20,127 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:02:20,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:02:20,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:02:20,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:02:20,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:02:20,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:02:20,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:02:20,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:02:20,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:02:20,129 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:02:20,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:02:20,129 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:02:20,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:02:20,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:02:20,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:02:20,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:02:20,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:02:20,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:02:20,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:02:20,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:02:20,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:02:20,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:02:20,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:02:20,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:02:20,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:02:20,132 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:02:20,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:02:20,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:02:20,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:02:20,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:02:20,535 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:02:20,536 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label23.c [2020-10-14 23:02:20,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4739c6c93/8a35fa04b1df409094ba60f71da55d14/FLAG95c41afd1 [2020-10-14 23:02:21,727 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:02:21,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label23.c [2020-10-14 23:02:21,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4739c6c93/8a35fa04b1df409094ba60f71da55d14/FLAG95c41afd1 [2020-10-14 23:02:22,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4739c6c93/8a35fa04b1df409094ba60f71da55d14 [2020-10-14 23:02:22,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:02:22,063 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:02:22,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:02:22,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:02:22,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:02:22,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:02:22" (1/1) ... [2020-10-14 23:02:22,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:22, skipping insertion in model container [2020-10-14 23:02:22,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:02:22" (1/1) ... [2020-10-14 23:02:22,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:02:22,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:02:24,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:02:24,673 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:02:25,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:02:25,732 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:02:25,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:25 WrapperNode [2020-10-14 23:02:25,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:02:25,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:02:25,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:02:25,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:02:25,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:25" (1/1) ... [2020-10-14 23:02:25,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:25" (1/1) ... [2020-10-14 23:02:25,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:25" (1/1) ... [2020-10-14 23:02:25,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:25" (1/1) ... [2020-10-14 23:02:26,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:25" (1/1) ... [2020-10-14 23:02:26,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:25" (1/1) ... [2020-10-14 23:02:26,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:25" (1/1) ... [2020-10-14 23:02:26,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:02:26,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:02:26,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:02:26,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:02:26,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:25" (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 [2020-10-14 23:02:26,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:02:26,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:02:26,278 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:02:26,278 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:02:26,278 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:02:26,279 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:02:26,279 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:02:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:02:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:02:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:02:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:02:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:02:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:02:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:02:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:02:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:02:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:02:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:02:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:02:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:02:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:02:38,628 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:02:38,628 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:02:38,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:02:38 BoogieIcfgContainer [2020-10-14 23:02:38,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:02:38,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:02:38,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:02:38,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:02:38,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:02:22" (1/3) ... [2020-10-14 23:02:38,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb9e842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:02:38, skipping insertion in model container [2020-10-14 23:02:38,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:25" (2/3) ... [2020-10-14 23:02:38,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb9e842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:02:38, skipping insertion in model container [2020-10-14 23:02:38,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:02:38" (3/3) ... [2020-10-14 23:02:38,655 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label23.c [2020-10-14 23:02:38,665 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:02:38,677 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:02:38,693 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:02:38,733 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:02:38,734 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:02:38,734 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:02:38,734 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:02:38,734 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:02:38,734 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:02:38,734 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:02:38,734 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:02:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:02:38,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:02:38,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:02:38,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:02:38,791 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:02:38,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:02:38,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1055172910, now seen corresponding path program 1 times [2020-10-14 23:02:38,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:02:38,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145462275] [2020-10-14 23:02:38,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:02:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:39,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:39,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:02:39,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:02:39,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-14 23:02:39,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:39,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:02:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:02:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 23:02:39,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:02:39,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:02:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:39,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:39,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:02:39,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:02:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:02:39,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:39,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:02:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:02:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:02:39,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:02:39,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145462275] [2020-10-14 23:02:39,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:02:39,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:02:39,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882249213] [2020-10-14 23:02:39,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:02:39,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:02:39,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:02:39,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:02:39,678 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-14 23:03:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:03:15,595 INFO L93 Difference]: Finished difference Result 6573 states and 12489 transitions. [2020-10-14 23:03:15,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:03:15,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-14 23:03:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:03:15,645 INFO L225 Difference]: With dead ends: 6573 [2020-10-14 23:03:15,646 INFO L226 Difference]: Without dead ends: 4728 [2020-10-14 23:03:15,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:03:15,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2020-10-14 23:03:15,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 4625. [2020-10-14 23:03:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4625 states. [2020-10-14 23:03:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 8166 transitions. [2020-10-14 23:03:15,980 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 8166 transitions. Word has length 58 [2020-10-14 23:03:15,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:03:15,982 INFO L479 AbstractCegarLoop]: Abstraction has 4625 states and 8166 transitions. [2020-10-14 23:03:15,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:03:15,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 8166 transitions. [2020-10-14 23:03:15,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 23:03:15,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:03:15,999 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:03:16,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:03:16,000 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:03:16,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:03:16,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2005857385, now seen corresponding path program 1 times [2020-10-14 23:03:16,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:03:16,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761972697] [2020-10-14 23:03:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:03:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:16,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:18,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:18,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 23:03:18,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:03:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1918 [2020-10-14 23:03:18,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:18,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:03:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:03:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 23:03:18,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 23:03:18,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:03:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:18,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:18,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:18,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:03:18,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:03:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:03:18,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:18,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:03:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:03:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:03:18,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 23:03:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:03:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:18,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:18,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:03:18,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:03:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-14 23:03:18,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:18,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:03:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:03:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:03:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:03:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:03:18,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761972697] [2020-10-14 23:03:18,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:03:18,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:03:18,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520665608] [2020-10-14 23:03:18,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:03:18,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:03:18,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:03:18,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:03:18,626 INFO L87 Difference]: Start difference. First operand 4625 states and 8166 transitions. Second operand 8 states. [2020-10-14 23:04:13,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:04:13,618 INFO L93 Difference]: Finished difference Result 17990 states and 32752 transitions. [2020-10-14 23:04:13,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:04:13,620 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-10-14 23:04:13,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:04:13,707 INFO L225 Difference]: With dead ends: 17990 [2020-10-14 23:04:13,707 INFO L226 Difference]: Without dead ends: 13371 [2020-10-14 23:04:13,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:04:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13371 states. [2020-10-14 23:04:14,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13371 to 13293. [2020-10-14 23:04:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13293 states. [2020-10-14 23:04:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13293 states to 13293 states and 21631 transitions. [2020-10-14 23:04:14,265 INFO L78 Accepts]: Start accepts. Automaton has 13293 states and 21631 transitions. Word has length 133 [2020-10-14 23:04:14,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:04:14,269 INFO L479 AbstractCegarLoop]: Abstraction has 13293 states and 21631 transitions. [2020-10-14 23:04:14,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:04:14,269 INFO L276 IsEmpty]: Start isEmpty. Operand 13293 states and 21631 transitions. [2020-10-14 23:04:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 23:04:14,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:04:14,284 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:04:14,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:04:14,285 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:04:14,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:04:14,286 INFO L82 PathProgramCache]: Analyzing trace with hash 945307330, now seen corresponding path program 1 times [2020-10-14 23:04:14,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:04:14,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389740018] [2020-10-14 23:04:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:04:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:14,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:14,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:16,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:16,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 23:04:16,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:04:16,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2185 [2020-10-14 23:04:16,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:16,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:04:16,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:04:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 23:04:16,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:04:16,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:04:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:16,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:16,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:16,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:04:16,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:04:16,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:04:16,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:16,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:04:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:04:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:04:16,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:16,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:04:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:16,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:17,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:17,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 23:04:17,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:04:17,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-14 23:04:17,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:17,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:04:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:04:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 23:04:17,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:04:17,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389740018] [2020-10-14 23:04:17,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:04:17,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:04:17,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698252998] [2020-10-14 23:04:17,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:04:17,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:04:17,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:04:17,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:04:17,440 INFO L87 Difference]: Start difference. First operand 13293 states and 21631 transitions. Second operand 7 states. [2020-10-14 23:05:22,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:05:22,226 INFO L93 Difference]: Finished difference Result 40497 states and 68426 transitions. [2020-10-14 23:05:22,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:05:22,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-10-14 23:05:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:05:22,367 INFO L225 Difference]: With dead ends: 40497 [2020-10-14 23:05:22,368 INFO L226 Difference]: Without dead ends: 27210 [2020-10-14 23:05:22,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:05:22,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27210 states. [2020-10-14 23:05:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27210 to 26838. [2020-10-14 23:05:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26838 states. [2020-10-14 23:05:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26838 states to 26838 states and 43338 transitions. [2020-10-14 23:05:23,400 INFO L78 Accepts]: Start accepts. Automaton has 26838 states and 43338 transitions. Word has length 207 [2020-10-14 23:05:23,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:05:23,403 INFO L479 AbstractCegarLoop]: Abstraction has 26838 states and 43338 transitions. [2020-10-14 23:05:23,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:05:23,403 INFO L276 IsEmpty]: Start isEmpty. Operand 26838 states and 43338 transitions. [2020-10-14 23:05:23,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 23:05:23,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:05:23,408 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:05:23,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:05:23,409 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:05:23,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:05:23,410 INFO L82 PathProgramCache]: Analyzing trace with hash 651031912, now seen corresponding path program 1 times [2020-10-14 23:05:23,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:05:23,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518662681] [2020-10-14 23:05:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:05:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:23,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:25,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:28,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:28,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 23:05:28,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:05:28,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4908 [2020-10-14 23:05:28,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:28,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:05:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:05:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 23:05:28,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:05:28,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:05:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:28,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:28,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:05:28,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:28,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:05:28,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:28,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:05:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:05:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:05:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:28,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:05:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:28,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:28,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 23:05:28,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:28,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 23:05:28,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:28,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:05:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:05:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 23:05:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:28,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 23:05:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:28,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:28,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:28,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:05:28,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:05:28,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:28,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:28,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:05:28,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 23:05:28,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:05:28,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:05:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 102 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:05:29,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518662681] [2020-10-14 23:05:29,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:05:29,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:05:29,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274086912] [2020-10-14 23:05:29,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:05:29,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:05:29,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:05:29,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:05:29,065 INFO L87 Difference]: Start difference. First operand 26838 states and 43338 transitions. Second operand 7 states.