/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:42:11,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:42:11,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:42:11,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:42:11,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:42:11,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:42:11,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:42:11,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:42:11,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:42:11,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:42:11,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:42:11,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:42:11,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:42:11,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:42:11,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:42:11,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:42:11,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:42:11,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:42:11,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:42:11,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:42:11,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:42:11,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:42:11,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:42:11,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:42:11,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:42:11,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:42:11,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:42:11,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:42:11,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:42:11,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:42:11,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:42:11,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:42:11,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:42:11,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:42:11,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:42:11,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:42:11,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:42:11,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:42:11,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:42:11,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:42:11,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:42:11,133 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 [2020-09-24 20:42:11,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:42:11,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:42:11,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:42:11,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:42:11,188 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:42:11,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:42:11,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:42:11,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:42:11,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:42:11,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:42:11,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:42:11,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:42:11,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:42:11,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:42:11,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:42:11,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:42:11,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:42:11,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:42:11,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:42:11,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:42:11,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:42:11,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:42:11,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:42:11,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:42:11,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:42:11,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:42:11,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:42:11,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:42:11,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:42:11,195 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:42:11,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:42:11,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:42:11,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:42:11,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:42:11,711 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:42:11,713 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-09-24 20:42:11,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/508d85f4f/b9cd21e05c5a4e7dae55389738c4caba/FLAG7abf644e2 [2020-09-24 20:42:12,338 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:42:12,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-09-24 20:42:12,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/508d85f4f/b9cd21e05c5a4e7dae55389738c4caba/FLAG7abf644e2 [2020-09-24 20:42:12,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/508d85f4f/b9cd21e05c5a4e7dae55389738c4caba [2020-09-24 20:42:12,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:42:12,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:42:12,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:42:12,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:42:12,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:42:12,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:42:12" (1/1) ... [2020-09-24 20:42:12,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac0f60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:12, skipping insertion in model container [2020-09-24 20:42:12,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:42:12" (1/1) ... [2020-09-24 20:42:12,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:42:12,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:42:12,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:42:12,982 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:42:13,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:42:13,137 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:42:13,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:13 WrapperNode [2020-09-24 20:42:13,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:42:13,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:42:13,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:42:13,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:42:13,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:13" (1/1) ... [2020-09-24 20:42:13,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:13" (1/1) ... [2020-09-24 20:42:13,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:13" (1/1) ... [2020-09-24 20:42:13,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:13" (1/1) ... [2020-09-24 20:42:13,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:13" (1/1) ... [2020-09-24 20:42:13,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:13" (1/1) ... [2020-09-24 20:42:13,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:13" (1/1) ... [2020-09-24 20:42:13,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:42:13,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:42:13,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:42:13,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:42:13,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:13" (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 [2020-09-24 20:42:13,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:42:13,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:42:13,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:42:13,273 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-24 20:42:13,273 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-24 20:42:13,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:42:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:42:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 20:42:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:42:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-24 20:42:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-24 20:42:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-24 20:42:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-24 20:42:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-24 20:42:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-24 20:42:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-24 20:42:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-24 20:42:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-24 20:42:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-24 20:42:13,276 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-24 20:42:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-24 20:42:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-24 20:42:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-24 20:42:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-24 20:42:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-24 20:42:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-24 20:42:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-24 20:42:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-24 20:42:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-24 20:42:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-24 20:42:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-24 20:42:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-24 20:42:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-24 20:42:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-24 20:42:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-24 20:42:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:42:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:42:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:42:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:42:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:42:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:42:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:42:13,742 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:42:13,742 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 20:42:13,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:42:13 BoogieIcfgContainer [2020-09-24 20:42:13,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:42:13,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:42:13,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:42:13,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:42:13,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:42:12" (1/3) ... [2020-09-24 20:42:13,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397e47a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:42:13, skipping insertion in model container [2020-09-24 20:42:13,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:13" (2/3) ... [2020-09-24 20:42:13,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397e47a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:42:13, skipping insertion in model container [2020-09-24 20:42:13,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:42:13" (3/3) ... [2020-09-24 20:42:13,768 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-09-24 20:42:13,780 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:42:13,791 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:42:13,814 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:42:13,861 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:42:13,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:42:13,861 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:42:13,861 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:42:13,862 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:42:13,862 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:42:13,862 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:42:13,863 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:42:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2020-09-24 20:42:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:42:13,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:13,903 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] [2020-09-24 20:42:13,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:13,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:13,910 INFO L82 PathProgramCache]: Analyzing trace with hash 593727157, now seen corresponding path program 1 times [2020-09-24 20:42:13,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:13,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369443010] [2020-09-24 20:42:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:14,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:14,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:14,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:14,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:14,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:15,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:16,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:16,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 20:42:16,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:42:16,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2619 [2020-09-24 20:42:16,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:42:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:42:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 20:42:16,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:42:16,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:16,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:16,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:16,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:16,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:16,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:42:16,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:16,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:42:16,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 20:42:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:16,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:16,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:16,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:16,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:16,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:42:16,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:16,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:42:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:42:16,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:42:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:16,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369443010] [2020-09-24 20:42:17,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:17,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 20:42:17,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319639453] [2020-09-24 20:42:17,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:42:17,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:17,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:42:17,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:42:17,043 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 10 states. [2020-09-24 20:42:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:18,038 INFO L93 Difference]: Finished difference Result 590 states and 697 transitions. [2020-09-24 20:42:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:42:18,041 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-09-24 20:42:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:18,060 INFO L225 Difference]: With dead ends: 590 [2020-09-24 20:42:18,061 INFO L226 Difference]: Without dead ends: 389 [2020-09-24 20:42:18,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-09-24 20:42:18,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-09-24 20:42:18,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 153. [2020-09-24 20:42:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-24 20:42:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 171 transitions. [2020-09-24 20:42:18,143 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 171 transitions. Word has length 51 [2020-09-24 20:42:18,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:18,143 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 171 transitions. [2020-09-24 20:42:18,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:42:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 171 transitions. [2020-09-24 20:42:18,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 20:42:18,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:18,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:42:18,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:42:18,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:18,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:18,148 INFO L82 PathProgramCache]: Analyzing trace with hash -751635860, now seen corresponding path program 1 times [2020-09-24 20:42:18,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:18,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436577118] [2020-09-24 20:42:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:18,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:18,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:18,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:18,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:18,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:18,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:19,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:19,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:19,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:23,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:23,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 20:42:23,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:42:23,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 20:42:23,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:42:23,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:42:23,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:23,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:23,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:23,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:23,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:23,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:23,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:42:23,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:23,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 20:42:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:23,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:23,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:23,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:23,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:23,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:42:23,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:42:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:23,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436577118] [2020-09-24 20:42:23,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:23,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 20:42:23,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20222933] [2020-09-24 20:42:23,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:42:23,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:23,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:42:23,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:42:23,384 INFO L87 Difference]: Start difference. First operand 153 states and 171 transitions. Second operand 12 states. [2020-09-24 20:42:24,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:24,411 INFO L93 Difference]: Finished difference Result 498 states and 566 transitions. [2020-09-24 20:42:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-24 20:42:24,411 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-09-24 20:42:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:24,415 INFO L225 Difference]: With dead ends: 498 [2020-09-24 20:42:24,415 INFO L226 Difference]: Without dead ends: 369 [2020-09-24 20:42:24,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=1021, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 20:42:24,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-09-24 20:42:24,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 153. [2020-09-24 20:42:24,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-24 20:42:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 170 transitions. [2020-09-24 20:42:24,438 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 170 transitions. Word has length 66 [2020-09-24 20:42:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:24,439 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 170 transitions. [2020-09-24 20:42:24,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:42:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 170 transitions. [2020-09-24 20:42:24,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 20:42:24,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:24,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:42:24,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:42:24,442 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:24,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:24,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1014533929, now seen corresponding path program 1 times [2020-09-24 20:42:24,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:24,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005635639] [2020-09-24 20:42:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:24,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:24,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:24,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:24,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:25,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:25,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:25,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:27,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:29,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:29,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:42:29,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 20:42:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 20:42:29,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:42:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:42:29,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:29,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:29,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:29,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:29,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:29,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:42:29,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:29,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:42:29,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 20:42:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:29,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:29,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:29,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:29,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:42:29,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:42:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:42:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:29,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005635639] [2020-09-24 20:42:29,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:29,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 20:42:29,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897819879] [2020-09-24 20:42:29,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:42:29,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:29,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:42:29,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:42:29,670 INFO L87 Difference]: Start difference. First operand 153 states and 170 transitions. Second operand 12 states. [2020-09-24 20:42:30,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:30,574 INFO L93 Difference]: Finished difference Result 522 states and 587 transitions. [2020-09-24 20:42:30,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 20:42:30,575 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-09-24 20:42:30,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:30,578 INFO L225 Difference]: With dead ends: 522 [2020-09-24 20:42:30,578 INFO L226 Difference]: Without dead ends: 363 [2020-09-24 20:42:30,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2020-09-24 20:42:30,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-09-24 20:42:30,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 144. [2020-09-24 20:42:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-24 20:42:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2020-09-24 20:42:30,604 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 159 transitions. Word has length 68 [2020-09-24 20:42:30,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:30,605 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 159 transitions. [2020-09-24 20:42:30,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:42:30,605 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 159 transitions. [2020-09-24 20:42:30,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 20:42:30,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:30,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:42:30,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:42:30,611 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:30,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:30,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2050415355, now seen corresponding path program 1 times [2020-09-24 20:42:30,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:30,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534540018] [2020-09-24 20:42:30,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:30,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:30,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:30,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:30,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:30,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:31,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:35,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:35,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:42:35,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:42:35,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 20:42:35,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:35,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:42:35,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:42:35,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:42:35,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:35,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:35,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:35,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:35,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:42:35,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:35,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 20:42:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:35,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:35,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:35,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:35,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:42:35,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:35,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:35,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:42:35,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:35,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:35,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534540018] [2020-09-24 20:42:35,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:35,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 20:42:35,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379653528] [2020-09-24 20:42:35,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:42:35,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:35,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:42:35,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:42:35,827 INFO L87 Difference]: Start difference. First operand 144 states and 159 transitions. Second operand 11 states. [2020-09-24 20:42:36,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:36,428 INFO L93 Difference]: Finished difference Result 414 states and 466 transitions. [2020-09-24 20:42:36,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:42:36,429 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-09-24 20:42:36,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:36,431 INFO L225 Difference]: With dead ends: 414 [2020-09-24 20:42:36,431 INFO L226 Difference]: Without dead ends: 294 [2020-09-24 20:42:36,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2020-09-24 20:42:36,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-09-24 20:42:36,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 161. [2020-09-24 20:42:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-24 20:42:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 178 transitions. [2020-09-24 20:42:36,441 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 178 transitions. Word has length 68 [2020-09-24 20:42:36,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:36,442 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 178 transitions. [2020-09-24 20:42:36,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:42:36,442 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 178 transitions. [2020-09-24 20:42:36,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 20:42:36,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:36,445 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:42:36,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:42:36,445 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:36,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:36,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1576903382, now seen corresponding path program 1 times [2020-09-24 20:42:36,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:36,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137313648] [2020-09-24 20:42:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:36,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:36,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:36,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:36,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:36,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:37,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:37,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:40,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:40,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 20:42:40,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:42:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3579 [2020-09-24 20:42:40,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:42:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 20:42:40,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:40,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:40,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:40,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:40,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:40,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:42:40,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:40,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:40,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 20:42:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:40,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:40,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:40,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:40,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:42:40,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:42:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:42:40,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:40,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137313648] [2020-09-24 20:42:40,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:42:40,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:42:40,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962507357] [2020-09-24 20:42:40,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:42:40,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:40,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:42:40,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:42:40,277 INFO L87 Difference]: Start difference. First operand 161 states and 178 transitions. Second operand 12 states. [2020-09-24 20:42:41,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:41,057 INFO L93 Difference]: Finished difference Result 409 states and 461 transitions. [2020-09-24 20:42:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 20:42:41,058 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-09-24 20:42:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:41,061 INFO L225 Difference]: With dead ends: 409 [2020-09-24 20:42:41,061 INFO L226 Difference]: Without dead ends: 407 [2020-09-24 20:42:41,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2020-09-24 20:42:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-09-24 20:42:41,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 237. [2020-09-24 20:42:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-09-24 20:42:41,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 266 transitions. [2020-09-24 20:42:41,075 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 266 transitions. Word has length 74 [2020-09-24 20:42:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:41,076 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 266 transitions. [2020-09-24 20:42:41,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:42:41,076 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 266 transitions. [2020-09-24 20:42:41,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 20:42:41,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:41,079 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:42:41,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:42:41,079 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:41,080 INFO L82 PathProgramCache]: Analyzing trace with hash -37177381, now seen corresponding path program 1 times [2020-09-24 20:42:41,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:41,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091421396] [2020-09-24 20:42:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:41,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:41,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:41,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:41,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:43,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:46,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:46,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 20:42:46,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:42:46,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:42:46,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:42:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:42:46,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:46,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:46,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:46,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:46,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:46,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:46,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:42:46,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:46,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:46,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 20:42:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:46,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:46,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:46,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:46,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:46,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:42:46,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:42:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:46,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091421396] [2020-09-24 20:42:46,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:46,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 20:42:46,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119544011] [2020-09-24 20:42:46,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:42:46,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:46,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:42:46,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:42:46,268 INFO L87 Difference]: Start difference. First operand 237 states and 266 transitions. Second operand 12 states. [2020-09-24 20:42:47,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:47,459 INFO L93 Difference]: Finished difference Result 462 states and 519 transitions. [2020-09-24 20:42:47,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 20:42:47,459 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-09-24 20:42:47,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:47,462 INFO L225 Difference]: With dead ends: 462 [2020-09-24 20:42:47,462 INFO L226 Difference]: Without dead ends: 342 [2020-09-24 20:42:47,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=1138, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 20:42:47,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-09-24 20:42:47,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 237. [2020-09-24 20:42:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-09-24 20:42:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 264 transitions. [2020-09-24 20:42:47,474 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 264 transitions. Word has length 75 [2020-09-24 20:42:47,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:47,475 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 264 transitions. [2020-09-24 20:42:47,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:42:47,475 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 264 transitions. [2020-09-24 20:42:47,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-24 20:42:47,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:47,476 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:42:47,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:42:47,477 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:47,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:47,477 INFO L82 PathProgramCache]: Analyzing trace with hash -48518149, now seen corresponding path program 1 times [2020-09-24 20:42:47,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:47,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972510247] [2020-09-24 20:42:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:47,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:47,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:48,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:48,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:52,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:52,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 20:42:52,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:42:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:42:52,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:42:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:42:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:52,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:52,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:52,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:52,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:52,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:52,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:42:52,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:52,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:52,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 20:42:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:52,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:52,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:52,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:42:52,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:42:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:52,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:52,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972510247] [2020-09-24 20:42:52,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:42:52,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:42:52,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229194501] [2020-09-24 20:42:52,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:42:52,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:52,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:42:52,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:42:52,617 INFO L87 Difference]: Start difference. First operand 237 states and 264 transitions. Second operand 11 states. [2020-09-24 20:42:53,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:53,645 INFO L93 Difference]: Finished difference Result 643 states and 724 transitions. [2020-09-24 20:42:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 20:42:53,645 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-09-24 20:42:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:53,649 INFO L225 Difference]: With dead ends: 643 [2020-09-24 20:42:53,649 INFO L226 Difference]: Without dead ends: 520 [2020-09-24 20:42:53,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2020-09-24 20:42:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-09-24 20:42:53,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 304. [2020-09-24 20:42:53,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-09-24 20:42:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 343 transitions. [2020-09-24 20:42:53,667 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 343 transitions. Word has length 77 [2020-09-24 20:42:53,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:53,667 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 343 transitions. [2020-09-24 20:42:53,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:42:53,668 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 343 transitions. [2020-09-24 20:42:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 20:42:53,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:53,671 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:42:53,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:42:53,671 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:53,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:53,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1544896218, now seen corresponding path program 1 times [2020-09-24 20:42:53,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:53,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872498786] [2020-09-24 20:42:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:53,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:53,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:53,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:53,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:53,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:54,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:54,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:54,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:54,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:55,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:58,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:58,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 20:42:58,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:42:58,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:42:58,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:58,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:42:58,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:42:58,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:42:58,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:58,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:58,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:58,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:58,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:58,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:58,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:42:58,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:58,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:58,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:58,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:58,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 20:42:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:58,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:58,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:58,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:58,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:58,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:42:58,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:58,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:42:58,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:58,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:58,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872498786] [2020-09-24 20:42:58,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:42:58,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:42:58,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905057889] [2020-09-24 20:42:58,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:42:58,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:58,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:42:58,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:42:58,896 INFO L87 Difference]: Start difference. First operand 304 states and 343 transitions. Second operand 14 states.