/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:16:20,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:16:20,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:16:20,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:16:20,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:16:20,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:16:20,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:16:20,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:16:20,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:16:20,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:16:20,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:16:20,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:16:20,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:16:20,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:16:20,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:16:20,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:16:20,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:16:20,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:16:20,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:16:20,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:16:20,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:16:20,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:16:20,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:16:20,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:16:20,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:16:20,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:16:20,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:16:20,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:16:20,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:16:20,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:16:20,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:16:20,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:16:20,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:16:20,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:16:20,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:16:20,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:16:20,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:16:20,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:16:20,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:16:20,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:16:20,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:16:20,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:16:20,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:16:20,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:16:20,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:16:20,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:16:20,675 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:16:20,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:16:20,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:16:20,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:16:20,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:16:20,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:16:20,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:16:20,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:16:20,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:16:20,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:16:20,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:16:20,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:16:20,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:16:20,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:16:20,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:16:20,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:16:20,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:16:20,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:16:20,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:16:20,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:16:20,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:16:20,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:16:20,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:16:20,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:16:20,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:16:20,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:16:21,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:16:21,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:16:21,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:16:21,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:16:21,058 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:16:21,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27.c [2020-10-29 07:16:21,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0be83e5e/8b04432c3e544636ac96074f553622b7/FLAG999c74363 [2020-10-29 07:16:22,030 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:16:22,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label27.c [2020-10-29 07:16:22,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0be83e5e/8b04432c3e544636ac96074f553622b7/FLAG999c74363 [2020-10-29 07:16:22,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0be83e5e/8b04432c3e544636ac96074f553622b7 [2020-10-29 07:16:22,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:16:22,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:16:22,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:16:22,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:16:22,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:16:22,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:16:22" (1/1) ... [2020-10-29 07:16:22,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5ae2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:22, skipping insertion in model container [2020-10-29 07:16:22,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:16:22" (1/1) ... [2020-10-29 07:16:22,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:16:22,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:16:24,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:16:24,216 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:16:24,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:16:24,986 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:16:24,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:24 WrapperNode [2020-10-29 07:16:24,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:16:24,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:16:24,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:16:24,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:16:25,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:24" (1/1) ... [2020-10-29 07:16:25,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:24" (1/1) ... [2020-10-29 07:16:25,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:24" (1/1) ... [2020-10-29 07:16:25,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:24" (1/1) ... [2020-10-29 07:16:25,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:24" (1/1) ... [2020-10-29 07:16:25,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:24" (1/1) ... [2020-10-29 07:16:25,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:24" (1/1) ... [2020-10-29 07:16:25,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:16:25,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:16:25,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:16:25,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:16:25,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:16:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:16:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:16:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:16:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:16:25,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:16:25,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:16:25,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:16:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:16:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:16:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:16:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:16:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:16:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:16:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:16:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:16:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:16:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:16:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:16:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:16:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:16:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:16:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:16:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:16:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:16:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:16:35,518 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:16:35,519 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:16:35,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:16:35 BoogieIcfgContainer [2020-10-29 07:16:35,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:16:35,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:16:35,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:16:35,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:16:35,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:16:22" (1/3) ... [2020-10-29 07:16:35,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c918c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:16:35, skipping insertion in model container [2020-10-29 07:16:35,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:24" (2/3) ... [2020-10-29 07:16:35,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c918c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:16:35, skipping insertion in model container [2020-10-29 07:16:35,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:16:35" (3/3) ... [2020-10-29 07:16:35,537 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label27.c [2020-10-29 07:16:35,550 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:16:35,557 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:16:35,572 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:16:35,627 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:16:35,628 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:16:35,628 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:16:35,628 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:16:35,628 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:16:35,628 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:16:35,628 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:16:35,629 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:16:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:16:35,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 07:16:35,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:16:35,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:16:35,691 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:16:35,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:16:35,700 INFO L82 PathProgramCache]: Analyzing trace with hash 416159474, now seen corresponding path program 1 times [2020-10-29 07:16:35,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:16:35,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271398494] [2020-10-29 07:16:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:16:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:36,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:36,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 07:16:36,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:36,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-29 07:16:36,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:36,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:16:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:16:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 07:16:36,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:16:36,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:16:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:36,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:36,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:36,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:16:36,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:36,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:16:36,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:36,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:16:36,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:16:36,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271398494] [2020-10-29 07:16:36,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:16:36,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:16:36,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860181857] [2020-10-29 07:16:36,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:16:36,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:16:36,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:16:36,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:16:36,886 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:16:55,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:16:55,324 INFO L93 Difference]: Finished difference Result 3247 states and 5953 transitions. [2020-10-29 07:16:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:16:55,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-29 07:16:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:16:55,370 INFO L225 Difference]: With dead ends: 3247 [2020-10-29 07:16:55,370 INFO L226 Difference]: Without dead ends: 2045 [2020-10-29 07:16:55,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:16:55,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-10-29 07:16:55,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1988. [2020-10-29 07:16:55,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-29 07:16:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3533 transitions. [2020-10-29 07:16:55,578 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3533 transitions. Word has length 52 [2020-10-29 07:16:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:16:55,581 INFO L481 AbstractCegarLoop]: Abstraction has 1988 states and 3533 transitions. [2020-10-29 07:16:55,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:16:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3533 transitions. [2020-10-29 07:16:55,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 07:16:55,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:16:55,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:16:55,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:16:55,600 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:16:55,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:16:55,602 INFO L82 PathProgramCache]: Analyzing trace with hash 695830070, now seen corresponding path program 1 times [2020-10-29 07:16:55,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:16:55,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737972180] [2020-10-29 07:16:55,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:16:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:55,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:55,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:57,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:57,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 07:16:57,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:16:57,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1797 [2020-10-29 07:16:57,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:57,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:16:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:16:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:16:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:16:57,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:16:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:57,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:57,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:16:57,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:57,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:16:57,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:57,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:16:57,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:16:57,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:16:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:57,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:57,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:57,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:16:57,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:57,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 07:16:57,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:57,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:57,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:16:57,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:16:57,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:16:57,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:16:57,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737972180] [2020-10-29 07:16:57,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:16:57,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:16:57,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043688132] [2020-10-29 07:16:57,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:16:57,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:16:57,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:16:57,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:16:57,919 INFO L87 Difference]: Start difference. First operand 1988 states and 3533 transitions. Second operand 8 states. [2020-10-29 07:17:27,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:17:27,581 INFO L93 Difference]: Finished difference Result 7491 states and 13635 transitions. [2020-10-29 07:17:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:17:27,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-29 07:17:27,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:17:27,617 INFO L225 Difference]: With dead ends: 7491 [2020-10-29 07:17:27,618 INFO L226 Difference]: Without dead ends: 5509 [2020-10-29 07:17:27,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:17:27,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5509 states. [2020-10-29 07:17:27,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5509 to 5444. [2020-10-29 07:17:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5444 states. [2020-10-29 07:17:27,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 8635 transitions. [2020-10-29 07:17:27,822 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 8635 transitions. Word has length 121 [2020-10-29 07:17:27,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:17:27,822 INFO L481 AbstractCegarLoop]: Abstraction has 5444 states and 8635 transitions. [2020-10-29 07:17:27,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:17:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 8635 transitions. [2020-10-29 07:17:27,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 07:17:27,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:17:27,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:17:27,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:17:27,826 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:17:27,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:17:27,826 INFO L82 PathProgramCache]: Analyzing trace with hash -363155830, now seen corresponding path program 1 times [2020-10-29 07:17:27,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:17:27,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613859473] [2020-10-29 07:17:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:17:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:27,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:28,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:28,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:30,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:30,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 07:17:30,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:17:30,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2291 [2020-10-29 07:17:30,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:30,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:17:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:17:30,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:17:30,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:17:30,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:17:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:30,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:30,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:30,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:17:30,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:30,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:17:30,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:30,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:17:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:30,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:17:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:30,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:30,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:30,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:17:30,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:30,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:17:30,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:30,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:30,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:17:30,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:17:30,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:17:30,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:17:30,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613859473] [2020-10-29 07:17:30,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:17:30,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:17:30,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658296796] [2020-10-29 07:17:30,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:17:30,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:17:30,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:17:30,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:17:30,799 INFO L87 Difference]: Start difference. First operand 5444 states and 8635 transitions. Second operand 7 states. [2020-10-29 07:17:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:17:52,106 INFO L93 Difference]: Finished difference Result 16233 states and 26738 transitions. [2020-10-29 07:17:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:17:52,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-29 07:17:52,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:17:52,171 INFO L225 Difference]: With dead ends: 16233 [2020-10-29 07:17:52,171 INFO L226 Difference]: Without dead ends: 10795 [2020-10-29 07:17:52,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:17:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10795 states. [2020-10-29 07:17:52,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10795 to 10515. [2020-10-29 07:17:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10515 states. [2020-10-29 07:17:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10515 states to 10515 states and 14729 transitions. [2020-10-29 07:17:52,526 INFO L78 Accepts]: Start accepts. Automaton has 10515 states and 14729 transitions. Word has length 127 [2020-10-29 07:17:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:17:52,529 INFO L481 AbstractCegarLoop]: Abstraction has 10515 states and 14729 transitions. [2020-10-29 07:17:52,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:17:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 10515 states and 14729 transitions. [2020-10-29 07:17:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 07:17:52,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:17:52,531 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:17:52,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:17:52,531 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:17:52,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:17:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1089442770, now seen corresponding path program 1 times [2020-10-29 07:17:52,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:17:52,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673824031] [2020-10-29 07:17:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:17:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:52,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:53,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:53,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 07:17:53,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:17:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1150 [2020-10-29 07:17:53,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:53,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:17:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:17:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:17:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:17:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:53,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:53,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:53,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:17:53,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:17:53,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:53,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:17:53,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:53,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:17:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:54,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:54,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:17:54,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:54,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 07:17:54,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:54,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:17:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:17:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:17:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:17:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:17:54,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673824031] [2020-10-29 07:17:54,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:17:54,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:17:54,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942844361] [2020-10-29 07:17:54,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:17:54,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:17:54,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:17:54,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:17:54,226 INFO L87 Difference]: Start difference. First operand 10515 states and 14729 transitions. Second operand 7 states. [2020-10-29 07:18:14,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:18:14,478 INFO L93 Difference]: Finished difference Result 29318 states and 43299 transitions. [2020-10-29 07:18:14,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:18:14,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-10-29 07:18:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:18:14,570 INFO L225 Difference]: With dead ends: 29318 [2020-10-29 07:18:14,570 INFO L226 Difference]: Without dead ends: 18809 [2020-10-29 07:18:14,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:18:14,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18809 states. [2020-10-29 07:18:15,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18809 to 18400. [2020-10-29 07:18:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18400 states. [2020-10-29 07:18:15,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18400 states to 18400 states and 24588 transitions. [2020-10-29 07:18:15,125 INFO L78 Accepts]: Start accepts. Automaton has 18400 states and 24588 transitions. Word has length 157 [2020-10-29 07:18:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:18:15,127 INFO L481 AbstractCegarLoop]: Abstraction has 18400 states and 24588 transitions. [2020-10-29 07:18:15,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:18:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 18400 states and 24588 transitions. [2020-10-29 07:18:15,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-29 07:18:15,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:15,137 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:18:15,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:18:15,138 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:15,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:15,138 INFO L82 PathProgramCache]: Analyzing trace with hash -412643502, now seen corresponding path program 1 times [2020-10-29 07:18:15,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:15,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572742749] [2020-10-29 07:18:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:15,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:15,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:16,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:17,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:18,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:18,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-29 07:18:18,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:18:18,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3535 [2020-10-29 07:18:18,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:18,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:18:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:18:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-29 07:18:18,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:18,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:18:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:18,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:18,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:18:18,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:18,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:18:18,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:18,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:18,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:18,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:18,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:18:18,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:18,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:18:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:18,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:19,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:19,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:18:19,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:18:19,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-29 07:18:19,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:19,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:18:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:19,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:18:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:19,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:19,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:18:19,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:19,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 07:18:19,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:19,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:18:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:18:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:18:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:18:19,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572742749] [2020-10-29 07:18:19,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:18:19,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:18:19,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350363661] [2020-10-29 07:18:19,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:18:19,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:18:19,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:18:19,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:18:19,702 INFO L87 Difference]: Start difference. First operand 18400 states and 24588 transitions. Second operand 7 states. [2020-10-29 07:18:45,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:18:45,349 INFO L93 Difference]: Finished difference Result 49325 states and 70326 transitions. [2020-10-29 07:18:45,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:18:45,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-29 07:18:45,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:18:45,472 INFO L225 Difference]: With dead ends: 49325 [2020-10-29 07:18:45,473 INFO L226 Difference]: Without dead ends: 31734 [2020-10-29 07:18:45,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:18:45,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31734 states. [2020-10-29 07:18:46,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31734 to 30676. [2020-10-29 07:18:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30676 states. [2020-10-29 07:18:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30676 states to 30676 states and 40922 transitions. [2020-10-29 07:18:46,557 INFO L78 Accepts]: Start accepts. Automaton has 30676 states and 40922 transitions. Word has length 257 [2020-10-29 07:18:46,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:18:46,557 INFO L481 AbstractCegarLoop]: Abstraction has 30676 states and 40922 transitions. [2020-10-29 07:18:46,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:18:46,558 INFO L276 IsEmpty]: Start isEmpty. Operand 30676 states and 40922 transitions. [2020-10-29 07:18:46,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-29 07:18:46,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:46,564 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:18:46,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:18:46,565 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:46,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:46,565 INFO L82 PathProgramCache]: Analyzing trace with hash 750148367, now seen corresponding path program 1 times [2020-10-29 07:18:46,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:46,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471758738] [2020-10-29 07:18:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:46,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:46,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:46,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:49,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:49,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-29 07:18:49,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:18:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3268 [2020-10-29 07:18:49,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:49,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:18:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 07:18:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:18:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:18:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:50,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:50,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:50,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:18:50,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:50,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:18:50,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:50,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:18:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:50,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:18:50,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:50,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:18:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:50,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:50,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:18:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 07:18:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:50,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:18:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:50,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:18:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:50,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:50,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:50,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:18:50,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:50,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:18:50,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:50,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:18:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:18:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:18:50,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:18:50,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471758738] [2020-10-29 07:18:50,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:18:50,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:18:50,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754643855] [2020-10-29 07:18:50,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:18:50,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:18:50,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:18:50,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:18:50,634 INFO L87 Difference]: Start difference. First operand 30676 states and 40922 transitions. Second operand 7 states. [2020-10-29 07:18:53,789 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:19:24,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:19:24,660 INFO L93 Difference]: Finished difference Result 73479 states and 104648 transitions. [2020-10-29 07:19:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:19:24,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-29 07:19:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:19:24,847 INFO L225 Difference]: With dead ends: 73479 [2020-10-29 07:19:24,847 INFO L226 Difference]: Without dead ends: 51840 [2020-10-29 07:19:25,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:19:25,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51840 states. [2020-10-29 07:19:26,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51840 to 43912. [2020-10-29 07:19:26,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43912 states. [2020-10-29 07:19:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43912 states to 43912 states and 57207 transitions. [2020-10-29 07:19:26,208 INFO L78 Accepts]: Start accepts. Automaton has 43912 states and 57207 transitions. Word has length 271 [2020-10-29 07:19:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:19:26,209 INFO L481 AbstractCegarLoop]: Abstraction has 43912 states and 57207 transitions. [2020-10-29 07:19:26,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:19:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 43912 states and 57207 transitions. [2020-10-29 07:19:26,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-29 07:19:26,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:19:26,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:19:26,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:19:26,217 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:19:26,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:19:26,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2033787952, now seen corresponding path program 1 times [2020-10-29 07:19:26,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:19:26,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332681576] [2020-10-29 07:19:26,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:19:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:26,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:26,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:26,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:31,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:31,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-29 07:19:31,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:19:31,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 07:19:31,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:31,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:19:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:19:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 07:19:31,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:31,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:19:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:31,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:31,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:19:31,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:31,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:19:31,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:31,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:19:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:19:31,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:31,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:19:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:31,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:31,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:31,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:19:31,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 07:19:31,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:31,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:31,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:19:31,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:19:31,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:19:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:31,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:32,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:32,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:32,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 07:19:32,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:19:32,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-29 07:19:32,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:32,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:32,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:19:32,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:19:32,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 07:19:32,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:19:32,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332681576] [2020-10-29 07:19:32,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:19:32,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:19:32,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719990870] [2020-10-29 07:19:32,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:19:32,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:19:32,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:19:32,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:19:32,516 INFO L87 Difference]: Start difference. First operand 43912 states and 57207 transitions. Second operand 7 states. [2020-10-29 07:20:09,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:20:09,978 INFO L93 Difference]: Finished difference Result 122958 states and 167193 transitions. [2020-10-29 07:20:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:20:09,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-29 07:20:09,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:20:10,639 INFO L225 Difference]: With dead ends: 122958 [2020-10-29 07:20:10,639 INFO L226 Difference]: Without dead ends: 79855 [2020-10-29 07:20:10,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:20:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79855 states.