/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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 14:47:03,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:47:03,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:47:03,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:47:03,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:47:03,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:47:03,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:47:03,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:47:03,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:47:03,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:47:03,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:47:03,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:47:03,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:47:03,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:47:03,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:47:03,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:47:03,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:47:03,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:47:03,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:47:03,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:47:03,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:47:03,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:47:03,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:47:03,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:47:03,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:47:03,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:47:03,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:47:03,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:47:03,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:47:03,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:47:03,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:47:03,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:47:03,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:47:03,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:47:03,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:47:03,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:47:03,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:47:03,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:47:03,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:47:03,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:47:03,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:47:03,605 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 14:47:03,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:47:03,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:47:03,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:47:03,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:47:03,635 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:47:03,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:47:03,635 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:47:03,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:47:03,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:47:03,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:47:03,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:47:03,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:47:03,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:47:03,637 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:47:03,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:47:03,637 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:47:03,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:47:03,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:47:03,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:47:03,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:47:03,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:47:03,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:47:03,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:47:03,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:47:03,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:47:03,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:47:03,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:47:03,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:47:03,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:47:03,642 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:47:04,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:47:04,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:47:04,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:47:04,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:47:04,146 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:47:04,147 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 14:47:04,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d06e9160d/144164417a2441c49c726ed8ef8d4e7f/FLAGa92a8c03e [2020-09-25 14:47:04,801 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:47:04,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 14:47:04,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d06e9160d/144164417a2441c49c726ed8ef8d4e7f/FLAGa92a8c03e [2020-09-25 14:47:05,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d06e9160d/144164417a2441c49c726ed8ef8d4e7f [2020-09-25 14:47:05,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:47:05,127 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:47:05,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:47:05,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:47:05,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:47:05,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:47:05" (1/1) ... [2020-09-25 14:47:05,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc9c326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:05, skipping insertion in model container [2020-09-25 14:47:05,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:47:05" (1/1) ... [2020-09-25 14:47:05,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:47:05,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:47:05,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:47:05,441 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:47:05,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:47:05,594 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:47:05,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:05 WrapperNode [2020-09-25 14:47:05,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:47:05,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:47:05,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:47:05,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:47:05,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:05" (1/1) ... [2020-09-25 14:47:05,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:05" (1/1) ... [2020-09-25 14:47:05,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:05" (1/1) ... [2020-09-25 14:47:05,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:05" (1/1) ... [2020-09-25 14:47:05,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:05" (1/1) ... [2020-09-25 14:47:05,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:05" (1/1) ... [2020-09-25 14:47:05,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:05" (1/1) ... [2020-09-25 14:47:05,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:47:05,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:47:05,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:47:05,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:47:05,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:05" (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 14:47:05,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:47:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:47:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:47:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 14:47:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 14:47:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:47:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:47:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:47:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 14:47:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 14:47:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 14:47:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 14:47:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 14:47:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 14:47:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 14:47:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 14:47:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 14:47:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 14:47:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 14:47:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 14:47:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 14:47:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 14:47:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 14:47:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 14:47:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 14:47:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 14:47:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 14:47:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 14:47:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 14:47:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 14:47:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 14:47:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 14:47:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 14:47:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 14:47:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:47:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:47:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:47:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:47:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:47:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:47:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:47:06,219 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:47:06,220 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 14:47:06,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:47:06 BoogieIcfgContainer [2020-09-25 14:47:06,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:47:06,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:47:06,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:47:06,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:47:06,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:47:05" (1/3) ... [2020-09-25 14:47:06,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f0a74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:47:06, skipping insertion in model container [2020-09-25 14:47:06,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:05" (2/3) ... [2020-09-25 14:47:06,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f0a74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:47:06, skipping insertion in model container [2020-09-25 14:47:06,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:47:06" (3/3) ... [2020-09-25 14:47:06,243 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 14:47:06,253 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:47:06,265 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:47:06,289 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:47:06,326 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:47:06,326 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:47:06,326 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:47:06,327 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:47:06,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:47:06,327 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:47:06,327 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:47:06,327 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:47:06,357 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 14:47:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 14:47:06,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:06,371 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 14:47:06,372 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:06,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:06,381 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 14:47:06,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:06,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798935598] [2020-09-25 14:47:06,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:06,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:07,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:07,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:07,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:08,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:08,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:47:08,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:47:08,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2358 [2020-09-25 14:47:08,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:08,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:08,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:47:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:47:08,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:47:09,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:09,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:09,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:09,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:09,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:47:09,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:09,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:09,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:09,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:09,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:09,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:47:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:09,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:09,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:09,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:47:09,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:09,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:47:09,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:09,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:09,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:09,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:47:09,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:09,197 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 14:47:09,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798935598] [2020-09-25 14:47:09,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:09,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:47:09,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094485921] [2020-09-25 14:47:09,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:47:09,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:09,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:47:09,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:09,229 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-25 14:47:09,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:09,831 INFO L93 Difference]: Finished difference Result 325 states and 377 transitions. [2020-09-25 14:47:09,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:47:09,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-09-25 14:47:09,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:09,852 INFO L225 Difference]: With dead ends: 325 [2020-09-25 14:47:09,852 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 14:47:09,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:47:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 14:47:09,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 159. [2020-09-25 14:47:09,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 14:47:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2020-09-25 14:47:09,948 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 48 [2020-09-25 14:47:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:09,950 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2020-09-25 14:47:09,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:47:09,956 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2020-09-25 14:47:09,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 14:47:09,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:09,964 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 14:47:09,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:47:09,966 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:09,967 INFO L82 PathProgramCache]: Analyzing trace with hash 279562443, now seen corresponding path program 1 times [2020-09-25 14:47:09,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:09,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290745562] [2020-09-25 14:47:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:10,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:13,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:13,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:15,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:15,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:47:15,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:47:15,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:47:15,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:15,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:15,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:15,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:47:15,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:47:15,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:15,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:15,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:15,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:15,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:47:15,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:15,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:15,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:15,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 14:47:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:15,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:15,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:15,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:47:15,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:15,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:15,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:15,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:47:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:15,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:15,133 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 14:47:15,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290745562] [2020-09-25 14:47:15,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:15,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:47:15,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262587795] [2020-09-25 14:47:15,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:47:15,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:15,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:47:15,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:15,141 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand 8 states. [2020-09-25 14:47:15,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:15,709 INFO L93 Difference]: Finished difference Result 397 states and 449 transitions. [2020-09-25 14:47:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:47:15,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 14:47:15,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:15,715 INFO L225 Difference]: With dead ends: 397 [2020-09-25 14:47:15,715 INFO L226 Difference]: Without dead ends: 298 [2020-09-25 14:47:15,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:47:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-25 14:47:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 196. [2020-09-25 14:47:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 14:47:15,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 223 transitions. [2020-09-25 14:47:15,738 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 223 transitions. Word has length 62 [2020-09-25 14:47:15,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:15,739 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 223 transitions. [2020-09-25 14:47:15,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:47:15,739 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 223 transitions. [2020-09-25 14:47:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 14:47:15,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:15,742 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] [2020-09-25 14:47:15,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:47:15,743 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:15,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:15,743 INFO L82 PathProgramCache]: Analyzing trace with hash -53936734, now seen corresponding path program 1 times [2020-09-25 14:47:15,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:15,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218976958] [2020-09-25 14:47:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:15,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:15,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:15,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:16,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:16,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:16,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:20,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:20,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:47:20,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:47:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 14:47:20,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:20,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:47:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:47:20,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:47:20,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:20,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:20,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:20,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:20,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:20,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:20,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:20,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:20,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:20,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:20,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:20,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:47:20,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:20,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:47:20,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:20,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:47:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:20,910 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 14:47:20,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218976958] [2020-09-25 14:47:20,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:20,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:47:20,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544873875] [2020-09-25 14:47:20,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:47:20,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:20,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:47:20,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:20,914 INFO L87 Difference]: Start difference. First operand 196 states and 223 transitions. Second operand 8 states. [2020-09-25 14:47:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:21,461 INFO L93 Difference]: Finished difference Result 369 states and 418 transitions. [2020-09-25 14:47:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:47:21,462 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 14:47:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:21,466 INFO L225 Difference]: With dead ends: 369 [2020-09-25 14:47:21,466 INFO L226 Difference]: Without dead ends: 280 [2020-09-25 14:47:21,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:47:21,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-25 14:47:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 218. [2020-09-25 14:47:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-25 14:47:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 249 transitions. [2020-09-25 14:47:21,484 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 249 transitions. Word has length 63 [2020-09-25 14:47:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:21,485 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 249 transitions. [2020-09-25 14:47:21,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:47:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 249 transitions. [2020-09-25 14:47:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 14:47:21,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:21,488 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] [2020-09-25 14:47:21,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:47:21,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:21,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:21,488 INFO L82 PathProgramCache]: Analyzing trace with hash 322027262, now seen corresponding path program 1 times [2020-09-25 14:47:21,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:21,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182336178] [2020-09-25 14:47:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:21,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:21,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:21,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:21,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:21,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:21,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:23,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:23,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:23,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:26,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:26,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:47:26,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:47:26,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:47:26,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:26,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:26,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:26,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:47:26,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:47:26,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:26,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:26,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:26,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:26,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:26,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:26,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:26,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:26,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:26,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:26,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:26,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:26,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:26,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:26,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:47:26,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:26,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:26,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:47:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:26,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:26,634 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 14:47:26,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182336178] [2020-09-25 14:47:26,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:26,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:47:26,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315883761] [2020-09-25 14:47:26,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:47:26,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:26,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:47:26,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:26,639 INFO L87 Difference]: Start difference. First operand 218 states and 249 transitions. Second operand 8 states. [2020-09-25 14:47:27,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:27,082 INFO L93 Difference]: Finished difference Result 343 states and 387 transitions. [2020-09-25 14:47:27,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:47:27,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 14:47:27,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:27,086 INFO L225 Difference]: With dead ends: 343 [2020-09-25 14:47:27,086 INFO L226 Difference]: Without dead ends: 250 [2020-09-25 14:47:27,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:47:27,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-09-25 14:47:27,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 224. [2020-09-25 14:47:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 14:47:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 254 transitions. [2020-09-25 14:47:27,110 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 254 transitions. Word has length 63 [2020-09-25 14:47:27,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:27,111 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 254 transitions. [2020-09-25 14:47:27,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:47:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 254 transitions. [2020-09-25 14:47:27,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 14:47:27,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:27,113 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 14:47:27,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:47:27,114 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:27,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:27,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1192248927, now seen corresponding path program 1 times [2020-09-25 14:47:27,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:27,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894728351] [2020-09-25 14:47:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:27,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:27,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:27,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:27,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:27,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:27,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:27,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:28,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:47:32,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:47:32,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:47:32,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:47:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:47:32,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:32,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:32,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:47:32,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:32,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:32,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:47:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:47:32,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:32,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:47:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:32,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,241 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 14:47:32,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894728351] [2020-09-25 14:47:32,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:32,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:47:32,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924657418] [2020-09-25 14:47:32,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:47:32,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:32,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:47:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:32,244 INFO L87 Difference]: Start difference. First operand 224 states and 254 transitions. Second operand 8 states. [2020-09-25 14:47:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:32,718 INFO L93 Difference]: Finished difference Result 381 states and 431 transitions. [2020-09-25 14:47:32,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:47:32,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-09-25 14:47:32,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:32,720 INFO L225 Difference]: With dead ends: 381 [2020-09-25 14:47:32,721 INFO L226 Difference]: Without dead ends: 280 [2020-09-25 14:47:32,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:47:32,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-25 14:47:32,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 235. [2020-09-25 14:47:32,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-25 14:47:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 267 transitions. [2020-09-25 14:47:32,749 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 267 transitions. Word has length 65 [2020-09-25 14:47:32,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:32,752 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 267 transitions. [2020-09-25 14:47:32,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:47:32,752 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 267 transitions. [2020-09-25 14:47:32,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 14:47:32,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:32,753 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 14:47:32,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:47:32,754 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:32,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:32,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2088092010, now seen corresponding path program 1 times [2020-09-25 14:47:32,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:32,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995404991] [2020-09-25 14:47:32,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:33,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:34,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:47:37,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 14:47:37,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:47:37,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:47:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:47:37,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:37,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:37,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:37,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:47:37,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:37,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 14:47:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:47:37,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:37,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:47:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:37,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:37,868 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 14:47:37,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995404991] [2020-09-25 14:47:37,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:37,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:47:37,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874721023] [2020-09-25 14:47:37,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:47:37,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:37,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:47:37,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:37,871 INFO L87 Difference]: Start difference. First operand 235 states and 267 transitions. Second operand 8 states. [2020-09-25 14:47:38,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:38,345 INFO L93 Difference]: Finished difference Result 573 states and 655 transitions. [2020-09-25 14:47:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:47:38,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-25 14:47:38,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:38,349 INFO L225 Difference]: With dead ends: 573 [2020-09-25 14:47:38,349 INFO L226 Difference]: Without dead ends: 469 [2020-09-25 14:47:38,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:47:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-09-25 14:47:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 281. [2020-09-25 14:47:38,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-09-25 14:47:38,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 320 transitions. [2020-09-25 14:47:38,364 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 320 transitions. Word has length 66 [2020-09-25 14:47:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:38,364 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 320 transitions. [2020-09-25 14:47:38,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:47:38,365 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 320 transitions. [2020-09-25 14:47:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 14:47:38,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:38,366 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 14:47:38,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:47:38,367 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:38,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:38,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1110941080, now seen corresponding path program 1 times [2020-09-25 14:47:38,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:38,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665624179] [2020-09-25 14:47:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:41,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:41,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:41,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 14:47:43,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:47:43,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:47:43,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:47:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:47:43,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:43,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:43,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:47:43,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:43,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:43,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 14:47:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:47:43,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:43,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:43,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:47:43,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:43,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:43,462 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 14:47:43,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665624179] [2020-09-25 14:47:43,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:43,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:47:43,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137607477] [2020-09-25 14:47:43,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:47:43,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:43,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:47:43,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:43,464 INFO L87 Difference]: Start difference. First operand 281 states and 320 transitions. Second operand 8 states. [2020-09-25 14:47:43,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:43,912 INFO L93 Difference]: Finished difference Result 502 states and 569 transitions. [2020-09-25 14:47:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:47:43,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 14:47:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:43,917 INFO L225 Difference]: With dead ends: 502 [2020-09-25 14:47:43,917 INFO L226 Difference]: Without dead ends: 302 [2020-09-25 14:47:43,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:47:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-09-25 14:47:43,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 245. [2020-09-25 14:47:43,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-25 14:47:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 272 transitions. [2020-09-25 14:47:43,942 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 272 transitions. Word has length 67 [2020-09-25 14:47:43,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:43,945 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 272 transitions. [2020-09-25 14:47:43,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:47:43,945 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 272 transitions. [2020-09-25 14:47:43,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 14:47:43,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:43,948 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:43,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:47:43,948 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:43,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1427185919, now seen corresponding path program 1 times [2020-09-25 14:47:43,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:43,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953284032] [2020-09-25 14:47:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:44,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:44,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:44,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:44,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:44,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 14:47:48,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:47:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:47:48,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:47:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 14:47:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:49,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:49,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:49,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:49,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:49,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:47:49,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:49,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:49,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:49,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 14:47:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:49,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:49,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:47:49,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:49,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:49,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:47:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:49,064 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 14:47:49,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953284032] [2020-09-25 14:47:49,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:49,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:47:49,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001976900] [2020-09-25 14:47:49,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:47:49,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:49,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:47:49,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:49,065 INFO L87 Difference]: Start difference. First operand 245 states and 272 transitions. Second operand 8 states. [2020-09-25 14:47:49,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:49,642 INFO L93 Difference]: Finished difference Result 449 states and 500 transitions. [2020-09-25 14:47:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:47:49,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 14:47:49,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:49,646 INFO L225 Difference]: With dead ends: 449 [2020-09-25 14:47:49,646 INFO L226 Difference]: Without dead ends: 346 [2020-09-25 14:47:49,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:47:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-09-25 14:47:49,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 262. [2020-09-25 14:47:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-25 14:47:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 291 transitions. [2020-09-25 14:47:49,666 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 291 transitions. Word has length 70 [2020-09-25 14:47:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:49,666 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 291 transitions. [2020-09-25 14:47:49,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:47:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 291 transitions. [2020-09-25 14:47:49,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 14:47:49,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:49,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:49,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:47:49,668 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:49,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:49,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1229437967, now seen corresponding path program 1 times [2020-09-25 14:47:49,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:49,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846392148] [2020-09-25 14:47:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:49,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:50,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:50,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:52,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:52,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 14:47:52,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:47:52,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2685 [2020-09-25 14:47:52,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:52,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:47:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:47:52,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:52,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:52,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:52,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:52,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:52,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:52,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:47:52,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:52,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:52,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 14:47:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:52,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:52,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:52,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:47:52,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:52,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:52,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:52,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:47:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 14:47:52,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846392148] [2020-09-25 14:47:52,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:52,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:47:52,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630446972] [2020-09-25 14:47:52,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:47:52,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:52,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:47:52,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:52,462 INFO L87 Difference]: Start difference. First operand 262 states and 291 transitions. Second operand 8 states. [2020-09-25 14:47:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:52,920 INFO L93 Difference]: Finished difference Result 314 states and 348 transitions. [2020-09-25 14:47:52,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:47:52,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-09-25 14:47:52,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:52,924 INFO L225 Difference]: With dead ends: 314 [2020-09-25 14:47:52,924 INFO L226 Difference]: Without dead ends: 312 [2020-09-25 14:47:52,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:47:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-25 14:47:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 262. [2020-09-25 14:47:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-25 14:47:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 291 transitions. [2020-09-25 14:47:52,938 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 291 transitions. Word has length 73 [2020-09-25 14:47:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:52,939 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 291 transitions. [2020-09-25 14:47:52,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:47:52,939 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 291 transitions. [2020-09-25 14:47:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 14:47:52,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:52,940 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:52,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:47:52,941 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:52,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:52,941 INFO L82 PathProgramCache]: Analyzing trace with hash -656915567, now seen corresponding path program 1 times [2020-09-25 14:47:52,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:52,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644568896] [2020-09-25 14:47:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:52,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:53,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:53,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:53,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:53,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:57,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:57,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:57,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 14:47:57,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:47:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:47:57,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:57,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:47:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:47:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:47:57,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:58,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:58,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:58,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:58,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:58,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 14:47:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:47:58,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:58,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:47:58,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:58,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,075 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 14:47:58,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644568896] [2020-09-25 14:47:58,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:58,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 14:47:58,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091104206] [2020-09-25 14:47:58,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:47:58,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:58,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:47:58,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:47:58,080 INFO L87 Difference]: Start difference. First operand 262 states and 291 transitions. Second operand 10 states. [2020-09-25 14:47:58,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:58,802 INFO L93 Difference]: Finished difference Result 474 states and 529 transitions. [2020-09-25 14:47:58,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:47:58,802 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-09-25 14:47:58,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:58,806 INFO L225 Difference]: With dead ends: 474 [2020-09-25 14:47:58,806 INFO L226 Difference]: Without dead ends: 340 [2020-09-25 14:47:58,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:47:58,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-09-25 14:47:58,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 253. [2020-09-25 14:47:58,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-09-25 14:47:58,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 281 transitions. [2020-09-25 14:47:58,825 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 281 transitions. Word has length 73 [2020-09-25 14:47:58,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:58,825 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 281 transitions. [2020-09-25 14:47:58,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:47:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 281 transitions. [2020-09-25 14:47:58,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 14:47:58,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:58,828 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:58,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:47:58,828 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:58,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:58,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1028016585, now seen corresponding path program 1 times [2020-09-25 14:47:58,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:58,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804695435] [2020-09-25 14:47:58,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking...