/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:43:37,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:43:37,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:43:37,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:43:37,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:43:37,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:43:37,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:43:37,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:43:37,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:43:37,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:43:37,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:43:37,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:43:37,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:43:37,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:43:37,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:43:37,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:43:37,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:43:37,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:43:37,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:43:37,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:43:37,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:43:37,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:43:37,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:43:37,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:43:37,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:43:37,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:43:37,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:43:37,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:43:37,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:43:37,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:43:37,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:43:37,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:43:37,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:43:37,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:43:37,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:43:37,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:43:37,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:43:37,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:43:37,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:43:37,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:43:37,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:43:37,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:43:37,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:43:37,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:43:37,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:43:37,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:43:37,210 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:43:37,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:43:37,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:43:37,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:43:37,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:43:37,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:43:37,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:43:37,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:43:37,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:43:37,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:43:37,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:43:37,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:43:37,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:43:37,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:43:37,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:43:37,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:43:37,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:43:37,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:43:37,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:43:37,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:43:37,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:43:37,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:43:37,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:43:37,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:43:37,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:43:37,215 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:43:37,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:43:37,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:43:37,721 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:43:37,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:43:37,723 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:43:37,724 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 05:43:37,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60ba9441a/1726f48475404671902cdbb763eb9eb2/FLAG93c6bb222 [2020-09-25 05:43:38,380 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:43:38,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 05:43:38,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60ba9441a/1726f48475404671902cdbb763eb9eb2/FLAG93c6bb222 [2020-09-25 05:43:38,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60ba9441a/1726f48475404671902cdbb763eb9eb2 [2020-09-25 05:43:38,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:43:38,723 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:43:38,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:43:38,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:43:38,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:43:38,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:43:38" (1/1) ... [2020-09-25 05:43:38,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:38, skipping insertion in model container [2020-09-25 05:43:38,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:43:38" (1/1) ... [2020-09-25 05:43:38,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:43:38,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:43:39,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:43:39,063 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:43:39,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:43:39,229 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:43:39,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:39 WrapperNode [2020-09-25 05:43:39,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:43:39,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:43:39,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:43:39,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:43:39,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:39" (1/1) ... [2020-09-25 05:43:39,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:39" (1/1) ... [2020-09-25 05:43:39,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:39" (1/1) ... [2020-09-25 05:43:39,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:39" (1/1) ... [2020-09-25 05:43:39,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:39" (1/1) ... [2020-09-25 05:43:39,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:39" (1/1) ... [2020-09-25 05:43:39,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:39" (1/1) ... [2020-09-25 05:43:39,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:43:39,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:43:39,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:43:39,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:43:39,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:43:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:43:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:43:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 05:43:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 05:43:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 05:43:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:43:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:43:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 05:43:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 05:43:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 05:43:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 05:43:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 05:43:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 05:43:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 05:43:39,362 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 05:43:39,362 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 05:43:39,362 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 05:43:39,362 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 05:43:39,362 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 05:43:39,364 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 05:43:39,364 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 05:43:39,365 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 05:43:39,366 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 05:43:39,366 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 05:43:39,366 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 05:43:39,366 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 05:43:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 05:43:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 05:43:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 05:43:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 05:43:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 05:43:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 05:43:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 05:43:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 05:43:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:43:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:43:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:43:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:43:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:43:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:43:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:43:39,832 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:43:39,832 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 05:43:39,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:43:39 BoogieIcfgContainer [2020-09-25 05:43:39,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:43:39,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:43:39,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:43:39,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:43:39,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:43:38" (1/3) ... [2020-09-25 05:43:39,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a07266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:43:39, skipping insertion in model container [2020-09-25 05:43:39,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:39" (2/3) ... [2020-09-25 05:43:39,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a07266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:43:39, skipping insertion in model container [2020-09-25 05:43:39,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:43:39" (3/3) ... [2020-09-25 05:43:39,848 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 05:43:39,860 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:43:39,870 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:43:39,892 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:43:39,921 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:43:39,922 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:43:39,922 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:43:39,922 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:43:39,922 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:43:39,922 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:43:39,922 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:43:39,923 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:43:39,947 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 05:43:39,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 05:43:39,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:43:39,958 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] [2020-09-25 05:43:39,958 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:43:39,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:43:39,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 05:43:39,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:43:39,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289150154] [2020-09-25 05:43:39,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:43:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:40,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:40,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:40,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:41,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:42,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:42,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 05:43:42,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:43:42,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2113 [2020-09-25 05:43:42,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:42,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:42,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:42,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 05:43:42,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:42,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:43:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:43:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:42,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:42,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:43:42,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:42,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:43:42,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:42,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:43:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:42,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:43:42,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 05:43:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:42,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:42,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:42,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:43:42,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:42,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:43:42,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:42,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:42,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:43:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:42,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:43:42,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289150154] [2020-09-25 05:43:42,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:43:42,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:43:42,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570029662] [2020-09-25 05:43:42,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:43:42,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:43:42,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:43:42,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:43:42,438 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-09-25 05:43:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:43:42,773 INFO L93 Difference]: Finished difference Result 227 states and 257 transitions. [2020-09-25 05:43:42,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:43:42,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-09-25 05:43:42,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:43:42,787 INFO L225 Difference]: With dead ends: 227 [2020-09-25 05:43:42,787 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 05:43:42,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:43:42,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 05:43:42,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-25 05:43:42,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 05:43:42,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-09-25 05:43:42,846 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 48 [2020-09-25 05:43:42,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:43:42,847 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-09-25 05:43:42,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:43:42,848 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-09-25 05:43:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 05:43:42,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:43:42,851 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] [2020-09-25 05:43:42,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:43:42,851 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:43:42,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:43:42,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1227098254, now seen corresponding path program 1 times [2020-09-25 05:43:42,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:43:42,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580297111] [2020-09-25 05:43:42,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:43:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:42,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:42,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:42,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:43,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:43,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:44,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:45,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:47,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:47,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 05:43:47,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:43:47,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:43:47,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:47,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:43:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 05:43:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:43:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:47,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:43:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:47,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:47,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:43:47,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:43:47,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:47,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:43:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:47,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:47,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:43:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:47,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:47,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:47,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:43:47,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:47,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:43:47,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:47,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:43:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:47,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:43:47,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580297111] [2020-09-25 05:43:47,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:43:47,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:43:47,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354844378] [2020-09-25 05:43:47,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:43:47,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:43:47,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:43:47,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:43:47,954 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 4 states. [2020-09-25 05:43:48,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:43:48,155 INFO L93 Difference]: Finished difference Result 189 states and 208 transitions. [2020-09-25 05:43:48,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:43:48,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 05:43:48,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:43:48,158 INFO L225 Difference]: With dead ends: 189 [2020-09-25 05:43:48,158 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 05:43:48,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:43:48,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 05:43:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-09-25 05:43:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 05:43:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-09-25 05:43:48,171 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 60 [2020-09-25 05:43:48,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:43:48,171 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-09-25 05:43:48,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:43:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-09-25 05:43:48,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 05:43:48,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:43:48,174 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] [2020-09-25 05:43:48,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:43:48,175 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:43:48,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:43:48,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1578191403, now seen corresponding path program 1 times [2020-09-25 05:43:48,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:43:48,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477283885] [2020-09-25 05:43:48,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:43:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:48,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:48,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:48,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:48,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:50,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:50,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:43:50,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:43:50,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2369 [2020-09-25 05:43:50,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:50,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:43:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:43:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 05:43:50,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:50,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:43:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:50,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:50,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:50,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:43:50,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:50,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:43:50,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:50,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:43:50,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:50,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:50,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 05:43:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:50,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:50,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:50,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:43:50,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:50,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:43:50,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:50,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:43:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:43:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:43:50,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:50,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:43:50,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477283885] [2020-09-25 05:43:50,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:43:50,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:43:50,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79315956] [2020-09-25 05:43:50,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:43:50,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:43:50,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:43:50,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:43:50,699 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 8 states. [2020-09-25 05:43:51,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:43:51,120 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2020-09-25 05:43:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:43:51,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 05:43:51,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:43:51,126 INFO L225 Difference]: With dead ends: 208 [2020-09-25 05:43:51,127 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 05:43:51,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:43:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 05:43:51,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 163. [2020-09-25 05:43:51,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-25 05:43:51,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2020-09-25 05:43:51,148 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 62 [2020-09-25 05:43:51,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:43:51,149 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2020-09-25 05:43:51,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:43:51,149 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2020-09-25 05:43:51,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 05:43:51,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:43:51,152 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] [2020-09-25 05:43:51,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:43:51,153 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:43:51,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:43:51,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1116699365, now seen corresponding path program 1 times [2020-09-25 05:43:51,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:43:51,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852948844] [2020-09-25 05:43:51,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:43:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:51,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:51,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:51,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:51,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:51,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:54,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:54,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:54,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:54,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:56,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:56,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:43:56,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:43:56,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:43:56,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:56,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:43:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:43:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 05:43:56,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:56,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:43:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:56,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:56,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:43:56,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:43:56,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:56,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:43:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:56,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:56,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:43:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:56,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:56,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:43:56,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:56,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:43:56,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:56,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:43:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:43:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:43:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:43:56,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852948844] [2020-09-25 05:43:56,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:43:56,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 05:43:56,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173269295] [2020-09-25 05:43:56,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:43:56,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:43:56,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:43:56,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:43:56,332 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand 10 states. [2020-09-25 05:43:56,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:43:56,963 INFO L93 Difference]: Finished difference Result 344 states and 387 transitions. [2020-09-25 05:43:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:43:56,964 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-09-25 05:43:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:43:56,969 INFO L225 Difference]: With dead ends: 344 [2020-09-25 05:43:56,970 INFO L226 Difference]: Without dead ends: 254 [2020-09-25 05:43:56,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-09-25 05:43:56,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-25 05:43:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 194. [2020-09-25 05:43:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-25 05:43:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 219 transitions. [2020-09-25 05:43:57,013 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 219 transitions. Word has length 65 [2020-09-25 05:43:57,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:43:57,014 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 219 transitions. [2020-09-25 05:43:57,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:43:57,017 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 219 transitions. [2020-09-25 05:43:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 05:43:57,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:43:57,022 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] [2020-09-25 05:43:57,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:43:57,024 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:43:57,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:43:57,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1492663361, now seen corresponding path program 1 times [2020-09-25 05:43:57,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:43:57,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382665851] [2020-09-25 05:43:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:43:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:57,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:57,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:57,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:57,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:57,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:58,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:59,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:59,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:00,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:00,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:44:00,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:44:00,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3580 [2020-09-25 05:44:00,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:00,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:00,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:44:00,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:44:00,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:44:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:00,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:00,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:00,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:00,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:44:00,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:00,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:44:00,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:00,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:00,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:00,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:00,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:00,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:00,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:44:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:00,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:00,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:00,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:44:00,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:44:00,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:00,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:44:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:00,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:44:00,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382665851] [2020-09-25 05:44:00,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:00,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:44:00,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829659878] [2020-09-25 05:44:00,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:44:00,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:00,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:44:00,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:44:00,692 INFO L87 Difference]: Start difference. First operand 194 states and 219 transitions. Second operand 4 states. [2020-09-25 05:44:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:00,857 INFO L93 Difference]: Finished difference Result 284 states and 320 transitions. [2020-09-25 05:44:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:44:00,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-09-25 05:44:00,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:00,859 INFO L225 Difference]: With dead ends: 284 [2020-09-25 05:44:00,859 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 05:44:00,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:44:00,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 05:44:00,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-09-25 05:44:00,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 05:44:00,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 220 transitions. [2020-09-25 05:44:00,878 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 220 transitions. Word has length 65 [2020-09-25 05:44:00,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:00,878 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 220 transitions. [2020-09-25 05:44:00,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:44:00,879 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 220 transitions. [2020-09-25 05:44:00,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 05:44:00,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:00,881 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] [2020-09-25 05:44:00,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:44:00,881 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:00,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:00,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1905607281, now seen corresponding path program 1 times [2020-09-25 05:44:00,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:00,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319068670] [2020-09-25 05:44:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:00,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:00,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:01,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:01,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:01,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:02,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:05,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:05,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:05,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:05,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:44:05,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:44:05,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:44:05,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:05,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:44:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:44:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:44:05,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:05,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:05,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:05,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:05,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:44:05,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:05,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:44:05,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:05,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:05,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:05,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:05,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:05,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:05,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 05:44:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:05,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:05,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:05,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:44:05,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:05,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:44:05,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:05,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:05,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:05,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:44:05,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:05,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:44:05,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319068670] [2020-09-25 05:44:05,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:05,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:44:05,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491203090] [2020-09-25 05:44:05,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:44:05,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:05,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:44:05,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:44:05,979 INFO L87 Difference]: Start difference. First operand 196 states and 220 transitions. Second operand 6 states. [2020-09-25 05:44:06,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:06,266 INFO L93 Difference]: Finished difference Result 341 states and 383 transitions. [2020-09-25 05:44:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:44:06,266 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-09-25 05:44:06,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:06,268 INFO L225 Difference]: With dead ends: 341 [2020-09-25 05:44:06,268 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 05:44:06,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:44:06,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 05:44:06,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 203. [2020-09-25 05:44:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-25 05:44:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 228 transitions. [2020-09-25 05:44:06,288 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 228 transitions. Word has length 66 [2020-09-25 05:44:06,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:06,288 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 228 transitions. [2020-09-25 05:44:06,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:44:06,289 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 228 transitions. [2020-09-25 05:44:06,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 05:44:06,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:06,291 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] [2020-09-25 05:44:06,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:44:06,292 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:06,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:06,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1492389340, now seen corresponding path program 1 times [2020-09-25 05:44:06,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:06,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565025759] [2020-09-25 05:44:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:06,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:06,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:06,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:07,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:07,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:07,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:08,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:08,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:44:08,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:44:08,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1993 [2020-09-25 05:44:08,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:08,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:44:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:44:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:44:08,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:44:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:08,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:08,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:44:08,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:44:08,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:08,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:08,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:44:08,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 05:44:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:08,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:08,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:08,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:44:08,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:08,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:44:08,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:08,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:08,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:08,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:44:08,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:08,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:44:08,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:44:08,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565025759] [2020-09-25 05:44:08,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:08,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:44:08,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737241290] [2020-09-25 05:44:08,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:44:08,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:08,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:44:08,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:44:08,379 INFO L87 Difference]: Start difference. First operand 203 states and 228 transitions. Second operand 6 states. [2020-09-25 05:44:08,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:08,591 INFO L93 Difference]: Finished difference Result 369 states and 411 transitions. [2020-09-25 05:44:08,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:44:08,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 05:44:08,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:08,593 INFO L225 Difference]: With dead ends: 369 [2020-09-25 05:44:08,593 INFO L226 Difference]: Without dead ends: 252 [2020-09-25 05:44:08,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:44:08,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-25 05:44:08,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 191. [2020-09-25 05:44:08,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 05:44:08,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 212 transitions. [2020-09-25 05:44:08,601 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 212 transitions. Word has length 67 [2020-09-25 05:44:08,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:08,602 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 212 transitions. [2020-09-25 05:44:08,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:44:08,602 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 212 transitions. [2020-09-25 05:44:08,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 05:44:08,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:08,603 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] [2020-09-25 05:44:08,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:44:08,604 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:08,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:08,604 INFO L82 PathProgramCache]: Analyzing trace with hash -508291602, now seen corresponding path program 1 times [2020-09-25 05:44:08,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:08,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875969181] [2020-09-25 05:44:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:08,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:08,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:10,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:13,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:13,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 05:44:13,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:44:13,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4516 [2020-09-25 05:44:13,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:13,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:44:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 05:44:13,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:44:13,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:44:13,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:13,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:13,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:13,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:44:13,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:13,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:44:13,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:13,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:13,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:13,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:13,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:13,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:13,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 05:44:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:13,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:13,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:13,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:44:13,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:13,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:44:13,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:13,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:13,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:13,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:44:13,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:13,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:44:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:44:13,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875969181] [2020-09-25 05:44:13,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:13,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:44:13,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851067116] [2020-09-25 05:44:13,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:44:13,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:13,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:44:13,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:44:13,190 INFO L87 Difference]: Start difference. First operand 191 states and 212 transitions. Second operand 5 states. [2020-09-25 05:44:13,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:13,433 INFO L93 Difference]: Finished difference Result 304 states and 337 transitions. [2020-09-25 05:44:13,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:44:13,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-09-25 05:44:13,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:13,436 INFO L225 Difference]: With dead ends: 304 [2020-09-25 05:44:13,436 INFO L226 Difference]: Without dead ends: 209 [2020-09-25 05:44:13,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:44:13,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-25 05:44:13,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 196. [2020-09-25 05:44:13,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 05:44:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 217 transitions. [2020-09-25 05:44:13,444 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 217 transitions. Word has length 68 [2020-09-25 05:44:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:13,444 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 217 transitions. [2020-09-25 05:44:13,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:44:13,444 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 217 transitions. [2020-09-25 05:44:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 05:44:13,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:13,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:44:13,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:44:13,446 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:13,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:13,446 INFO L82 PathProgramCache]: Analyzing trace with hash 574058161, now seen corresponding path program 1 times [2020-09-25 05:44:13,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:13,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151144338] [2020-09-25 05:44:13,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:13,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:13,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:14,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:15,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:15,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 05:44:15,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:44:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1748 [2020-09-25 05:44:15,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:15,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:44:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:44:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:44:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:44:15,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:15,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:15,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:44:15,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:44:15,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:15,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:15,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:15,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:15,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:15,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:15,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 05:44:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:15,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:15,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:44:15,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:15,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:44:15,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:15,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:44:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:44:15,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:44:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:44:15,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151144338] [2020-09-25 05:44:15,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:15,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 05:44:15,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512234877] [2020-09-25 05:44:15,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:44:15,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:15,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:44:15,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:44:15,337 INFO L87 Difference]: Start difference. First operand 196 states and 217 transitions. Second operand 10 states. [2020-09-25 05:44:15,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:15,948 INFO L93 Difference]: Finished difference Result 468 states and 520 transitions. [2020-09-25 05:44:15,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:44:15,948 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-09-25 05:44:15,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:15,951 INFO L225 Difference]: With dead ends: 468 [2020-09-25 05:44:15,951 INFO L226 Difference]: Without dead ends: 351 [2020-09-25 05:44:15,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-09-25 05:44:15,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-09-25 05:44:15,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 233. [2020-09-25 05:44:15,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-09-25 05:44:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 261 transitions. [2020-09-25 05:44:15,961 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 261 transitions. Word has length 70 [2020-09-25 05:44:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:15,962 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 261 transitions. [2020-09-25 05:44:15,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:44:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 261 transitions. [2020-09-25 05:44:15,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 05:44:15,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:15,963 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] [2020-09-25 05:44:15,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:44:15,964 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:15,964 INFO L82 PathProgramCache]: Analyzing trace with hash 588909148, now seen corresponding path program 1 times [2020-09-25 05:44:15,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:15,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582378056] [2020-09-25 05:44:15,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:15,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:16,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:16,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:16,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:16,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:16,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:19,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:19,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:19,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:20,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:20,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:44:20,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:44:20,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:44:20,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:20,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:44:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:44:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:44:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:21,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:21,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:21,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:44:21,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:21,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:44:21,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:21,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:21,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:21,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:21,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:44:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:21,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:21,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:21,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:44:21,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:21,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:44:21,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:21,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:44:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:44:21,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:44:21,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582378056] [2020-09-25 05:44:21,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:21,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 05:44:21,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735815458] [2020-09-25 05:44:21,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:44:21,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:21,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:44:21,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:44:21,109 INFO L87 Difference]: Start difference. First operand 233 states and 261 transitions. Second operand 10 states. [2020-09-25 05:44:21,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:21,746 INFO L93 Difference]: Finished difference Result 432 states and 482 transitions. [2020-09-25 05:44:21,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:44:21,746 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-09-25 05:44:21,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:21,749 INFO L225 Difference]: With dead ends: 432 [2020-09-25 05:44:21,749 INFO L226 Difference]: Without dead ends: 325 [2020-09-25 05:44:21,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-09-25 05:44:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-25 05:44:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 252. [2020-09-25 05:44:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-25 05:44:21,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 283 transitions. [2020-09-25 05:44:21,763 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 283 transitions. Word has length 72 [2020-09-25 05:44:21,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:21,763 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 283 transitions. [2020-09-25 05:44:21,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:44:21,764 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 283 transitions. [2020-09-25 05:44:21,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 05:44:21,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:21,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:44:21,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:44:21,765 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:21,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:21,766 INFO L82 PathProgramCache]: Analyzing trace with hash 926827883, now seen corresponding path program 1 times [2020-09-25 05:44:21,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:21,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540872587] [2020-09-25 05:44:21,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:21,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:21,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:22,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:24,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:26,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:26,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 05:44:26,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:44:26,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:44:26,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:26,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:44:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:44:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 05:44:26,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:44:26,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:26,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:26,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:26,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:44:26,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:44:26,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:26,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:26,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:44:26,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 05:44:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:26,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:26,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:26,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:44:26,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:26,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:44:26,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:26,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:44:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:26,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:44:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:44:26,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540872587] [2020-09-25 05:44:26,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:26,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 05:44:26,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954643348] [2020-09-25 05:44:26,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:44:26,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:26,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:44:26,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:44:26,891 INFO L87 Difference]: Start difference. First operand 252 states and 283 transitions. Second operand 10 states. [2020-09-25 05:44:27,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:27,425 INFO L93 Difference]: Finished difference Result 529 states and 591 transitions. [2020-09-25 05:44:27,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:44:27,426 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-09-25 05:44:27,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:27,429 INFO L225 Difference]: With dead ends: 529 [2020-09-25 05:44:27,429 INFO L226 Difference]: Without dead ends: 429 [2020-09-25 05:44:27,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:44:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-09-25 05:44:27,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 266. [2020-09-25 05:44:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-25 05:44:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 300 transitions. [2020-09-25 05:44:27,446 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 300 transitions. Word has length 73 [2020-09-25 05:44:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:27,447 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 300 transitions. [2020-09-25 05:44:27,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:44:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 300 transitions. [2020-09-25 05:44:27,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 05:44:27,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:27,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:44:27,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:44:27,457 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:27,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:27,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1806467579, now seen corresponding path program 1 times [2020-09-25 05:44:27,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:27,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333953554] [2020-09-25 05:44:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:27,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:27,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:28,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking...