/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/Problem12_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:55:20,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:55:20,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:55:20,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:55:20,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:55:20,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:55:20,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:55:20,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:55:20,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:55:20,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:55:20,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:55:20,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:55:20,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:55:20,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:55:20,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:55:20,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:55:20,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:55:20,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:55:20,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:55:20,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:55:20,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:55:20,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:55:20,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:55:20,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:55:20,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:55:20,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:55:20,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:55:20,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:55:20,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:55:20,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:55:20,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:55:20,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:55:20,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:55:20,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:55:20,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:55:20,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:55:20,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:55:20,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:55:20,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:55:20,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:55:20,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:55:20,632 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 06:55:20,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:55:20,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:55:20,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:55:20,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:55:20,685 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:55:20,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:55:20,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:55:20,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:55:20,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:55:20,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:55:20,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:55:20,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:55:20,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:55:20,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:55:20,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:55:20,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:55:20,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:55:20,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:55:20,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:55:20,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:55:20,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:55:20,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:55:20,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:55:20,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:55:20,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:55:20,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:55:20,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:55:20,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:55:20,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:55:20,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:55:21,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:55:21,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:55:21,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:55:21,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:55:21,204 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:55:21,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2020-10-29 06:55:21,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/738909bfe/0fe1c22065324c149eb895acf1673111/FLAG2fb90ad3d [2020-10-29 06:55:22,491 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:55:22,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2020-10-29 06:55:22,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/738909bfe/0fe1c22065324c149eb895acf1673111/FLAG2fb90ad3d [2020-10-29 06:55:22,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/738909bfe/0fe1c22065324c149eb895acf1673111 [2020-10-29 06:55:22,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:55:22,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:55:22,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:55:22,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:55:22,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:55:22,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:55:22" (1/1) ... [2020-10-29 06:55:22,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b40362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:22, skipping insertion in model container [2020-10-29 06:55:22,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:55:22" (1/1) ... [2020-10-29 06:55:22,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:55:23,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:55:24,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:55:24,479 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:55:25,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:55:25,317 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:55:25,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:25 WrapperNode [2020-10-29 06:55:25,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:55:25,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:55:25,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:55:25,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:55:25,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:25" (1/1) ... [2020-10-29 06:55:25,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:25" (1/1) ... [2020-10-29 06:55:25,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:25" (1/1) ... [2020-10-29 06:55:25,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:25" (1/1) ... [2020-10-29 06:55:25,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:25" (1/1) ... [2020-10-29 06:55:25,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:25" (1/1) ... [2020-10-29 06:55:25,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:25" (1/1) ... [2020-10-29 06:55:25,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:55:25,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:55:25,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:55:25,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:55:25,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:55:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:55:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:55:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:55:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:55:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:55:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:55:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:55:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:55:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:55:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:55:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:55:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:55:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:55:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:55:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:55:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:55:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:55:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:55:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:55:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:55:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:55:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:55:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:55:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:55:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:55:31,961 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:55:31,961 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:55:31,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:55:31 BoogieIcfgContainer [2020-10-29 06:55:31,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:55:31,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:55:31,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:55:31,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:55:31,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:55:22" (1/3) ... [2020-10-29 06:55:31,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7662d715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:55:31, skipping insertion in model container [2020-10-29 06:55:31,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:25" (2/3) ... [2020-10-29 06:55:31,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7662d715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:55:31, skipping insertion in model container [2020-10-29 06:55:31,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:55:31" (3/3) ... [2020-10-29 06:55:31,979 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label12.c [2020-10-29 06:55:31,994 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:55:32,001 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:55:32,018 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:55:32,079 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:55:32,080 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:55:32,080 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:55:32,080 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:55:32,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:55:32,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:55:32,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:55:32,081 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:55:32,131 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:55:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 06:55:32,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:32,143 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] [2020-10-29 06:55:32,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:32,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:32,152 INFO L82 PathProgramCache]: Analyzing trace with hash 108003572, now seen corresponding path program 1 times [2020-10-29 06:55:32,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:32,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803685954] [2020-10-29 06:55:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:32,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:33,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:33,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:55:33,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:33,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-29 06:55:33,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:33,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:55:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 06:55:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:55:33,353 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:55:33,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:33,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:33,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:33,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:33,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:33,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 06:55:33,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:33,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:33,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:33,503 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 06:55:33,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803685954] [2020-10-29 06:55:33,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:55:33,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 06:55:33,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489517345] [2020-10-29 06:55:33,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:55:33,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:33,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:55:33,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:55:33,542 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-29 06:55:33,730 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:55:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:48,995 INFO L93 Difference]: Finished difference Result 3258 states and 6299 transitions. [2020-10-29 06:55:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:55:48,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-29 06:55:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:49,037 INFO L225 Difference]: With dead ends: 3258 [2020-10-29 06:55:49,037 INFO L226 Difference]: Without dead ends: 2347 [2020-10-29 06:55:49,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-29 06:55:49,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-29 06:55:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-29 06:55:49,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3835 transitions. [2020-10-29 06:55:49,309 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3835 transitions. Word has length 65 [2020-10-29 06:55:49,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:49,312 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3835 transitions. [2020-10-29 06:55:49,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:55:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3835 transitions. [2020-10-29 06:55:49,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 06:55:49,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:49,331 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:55:49,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:55:49,333 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:49,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:49,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1166290959, now seen corresponding path program 1 times [2020-10-29 06:55:49,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:49,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587495125] [2020-10-29 06:55:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:49,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:51,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:51,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 06:55:51,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:55:51,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1625 [2020-10-29 06:55:51,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:51,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:51,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:55:51,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:51,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 06:55:51,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 06:55:51,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:51,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:51,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:51,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:51,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:55:51,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:51,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:51,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:55:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:51,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:51,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:51,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:51,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 06:55:51,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:51,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-29 06:55:51,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:51,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:55:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:55:51,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587495125] [2020-10-29 06:55:51,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:51,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:55:51,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693347029] [2020-10-29 06:55:51,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:55:51,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:51,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:55:51,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:51,720 INFO L87 Difference]: Start difference. First operand 2332 states and 3835 transitions. Second operand 7 states. [2020-10-29 06:56:04,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:04,025 INFO L93 Difference]: Finished difference Result 7214 states and 12292 transitions. [2020-10-29 06:56:04,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:56:04,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-29 06:56:04,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:04,065 INFO L225 Difference]: With dead ends: 7214 [2020-10-29 06:56:04,065 INFO L226 Difference]: Without dead ends: 4888 [2020-10-29 06:56:04,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:56:04,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4888 states. [2020-10-29 06:56:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4888 to 4747. [2020-10-29 06:56:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4747 states. [2020-10-29 06:56:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4747 states to 4747 states and 6760 transitions. [2020-10-29 06:56:04,267 INFO L78 Accepts]: Start accepts. Automaton has 4747 states and 6760 transitions. Word has length 143 [2020-10-29 06:56:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:04,268 INFO L481 AbstractCegarLoop]: Abstraction has 4747 states and 6760 transitions. [2020-10-29 06:56:04,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:56:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4747 states and 6760 transitions. [2020-10-29 06:56:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 06:56:04,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:04,272 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:56:04,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:56:04,272 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:04,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:04,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1359593773, now seen corresponding path program 1 times [2020-10-29 06:56:04,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:04,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985057802] [2020-10-29 06:56:04,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:04,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:05,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:05,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 06:56:05,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:56:05,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-10-29 06:56:05,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:05,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:56:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:56:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 06:56:05,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:05,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:05,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:05,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:05,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:05,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:05,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 06:56:05,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:05,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:05,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:05,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:56:05,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:05,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:05,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:05,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:05,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 06:56:05,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:05,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 06:56:05,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:05,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 06:56:05,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:56:05,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985057802] [2020-10-29 06:56:05,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:56:05,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:56:05,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382830632] [2020-10-29 06:56:05,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:56:05,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:05,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:56:05,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:56:05,791 INFO L87 Difference]: Start difference. First operand 4747 states and 6760 transitions. Second operand 7 states. [2020-10-29 06:56:20,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:20,482 INFO L93 Difference]: Finished difference Result 14617 states and 22117 transitions. [2020-10-29 06:56:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:56:20,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 168 [2020-10-29 06:56:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:20,558 INFO L225 Difference]: With dead ends: 14617 [2020-10-29 06:56:20,558 INFO L226 Difference]: Without dead ends: 9876 [2020-10-29 06:56:20,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:56:20,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9876 states. [2020-10-29 06:56:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9876 to 9652. [2020-10-29 06:56:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9652 states. [2020-10-29 06:56:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9652 states to 9652 states and 12781 transitions. [2020-10-29 06:56:20,990 INFO L78 Accepts]: Start accepts. Automaton has 9652 states and 12781 transitions. Word has length 168 [2020-10-29 06:56:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:20,993 INFO L481 AbstractCegarLoop]: Abstraction has 9652 states and 12781 transitions. [2020-10-29 06:56:20,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:56:20,994 INFO L276 IsEmpty]: Start isEmpty. Operand 9652 states and 12781 transitions. [2020-10-29 06:56:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-29 06:56:21,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:21,001 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:56:21,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:56:21,011 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:21,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:21,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1381621884, now seen corresponding path program 1 times [2020-10-29 06:56:21,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:21,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273093766] [2020-10-29 06:56:21,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:21,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:21,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:22,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:25,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:25,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-29 06:56:25,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:56:25,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4139 [2020-10-29 06:56:25,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:25,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:25,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 06:56:25,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:56:25,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:25,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:25,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:25,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:25,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:25,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:56:25,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:25,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:56:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:56:25,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:25,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:25,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:25,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:56:25,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:25,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 06:56:25,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:25,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 06:56:25,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:25,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 06:56:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:25,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:25,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:25,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:56:25,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 06:56:25,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:25,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:25,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:56:25,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:25,906 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:56:25,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273093766] [2020-10-29 06:56:25,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:56:25,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:56:25,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076535413] [2020-10-29 06:56:25,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:56:25,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:25,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:56:25,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:56:25,914 INFO L87 Difference]: Start difference. First operand 9652 states and 12781 transitions. Second operand 7 states. [2020-10-29 06:56:42,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:42,294 INFO L93 Difference]: Finished difference Result 24377 states and 33896 transitions. [2020-10-29 06:56:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:56:42,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2020-10-29 06:56:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:42,403 INFO L225 Difference]: With dead ends: 24377 [2020-10-29 06:56:42,404 INFO L226 Difference]: Without dead ends: 14731 [2020-10-29 06:56:42,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:56:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14731 states. [2020-10-29 06:56:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14731 to 14492. [2020-10-29 06:56:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14492 states. [2020-10-29 06:56:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14492 states to 14492 states and 18306 transitions. [2020-10-29 06:56:42,948 INFO L78 Accepts]: Start accepts. Automaton has 14492 states and 18306 transitions. Word has length 223 [2020-10-29 06:56:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:42,948 INFO L481 AbstractCegarLoop]: Abstraction has 14492 states and 18306 transitions. [2020-10-29 06:56:42,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:56:42,949 INFO L276 IsEmpty]: Start isEmpty. Operand 14492 states and 18306 transitions. [2020-10-29 06:56:42,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-29 06:56:42,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:42,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:56:42,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:56:42,955 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:42,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:42,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1769757506, now seen corresponding path program 1 times [2020-10-29 06:56:42,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:42,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874754632] [2020-10-29 06:56:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:43,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:45,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:45,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 06:56:45,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:56:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2102 [2020-10-29 06:56:45,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:45,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:56:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:56:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 06:56:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:45,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:45,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:45,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:45,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:45,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:45,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:56:45,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:45,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:45,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:45,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:45,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:56:45,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:45,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:45,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:45,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:45,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:56:45,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:45,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:56:45,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:45,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:56:45,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 06:56:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:45,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:45,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:45,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:56:45,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:45,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 06:56:45,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:45,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:56:45,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 115 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:56:46,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874754632] [2020-10-29 06:56:46,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:56:46,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:56:46,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474646227] [2020-10-29 06:56:46,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:56:46,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:46,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:56:46,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:56:46,196 INFO L87 Difference]: Start difference. First operand 14492 states and 18306 transitions. Second operand 8 states. [2020-10-29 06:57:03,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:03,529 INFO L93 Difference]: Finished difference Result 30277 states and 40098 transitions. [2020-10-29 06:57:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:57:03,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-10-29 06:57:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:03,585 INFO L225 Difference]: With dead ends: 30277 [2020-10-29 06:57:03,585 INFO L226 Difference]: Without dead ends: 13430 [2020-10-29 06:57:03,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:57:03,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13430 states. [2020-10-29 06:57:03,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13430 to 11414. [2020-10-29 06:57:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11414 states. [2020-10-29 06:57:04,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11414 states to 11414 states and 14752 transitions. [2020-10-29 06:57:04,100 INFO L78 Accepts]: Start accepts. Automaton has 11414 states and 14752 transitions. Word has length 226 [2020-10-29 06:57:04,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:04,100 INFO L481 AbstractCegarLoop]: Abstraction has 11414 states and 14752 transitions. [2020-10-29 06:57:04,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:57:04,101 INFO L276 IsEmpty]: Start isEmpty. Operand 11414 states and 14752 transitions. [2020-10-29 06:57:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-29 06:57:04,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:04,107 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:57:04,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:57:04,108 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:04,109 INFO L82 PathProgramCache]: Analyzing trace with hash 327883784, now seen corresponding path program 1 times [2020-10-29 06:57:04,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:04,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473951601] [2020-10-29 06:57:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:04,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:04,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:07,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:07,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-29 06:57:07,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:57:07,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3131 [2020-10-29 06:57:07,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:07,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:07,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:57:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:57:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 06:57:07,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:07,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:07,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:07,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:07,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:07,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 06:57:07,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:07,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:57:07,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:07,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:07,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:07,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:07,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 06:57:07,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:07,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 06:57:07,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:07,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 06:57:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:08,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 06:57:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:08,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:08,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:57:08,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:08,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 06:57:08,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:08,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:08,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:57:08,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 06:57:08,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:57:08,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:08,631 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 114 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:57:08,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473951601] [2020-10-29 06:57:08,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:08,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:57:08,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108932393] [2020-10-29 06:57:08,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:57:08,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:08,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:57:08,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:57:08,636 INFO L87 Difference]: Start difference. First operand 11414 states and 14752 transitions. Second operand 7 states. [2020-10-29 06:57:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:24,254 INFO L93 Difference]: Finished difference Result 25564 states and 33402 transitions. [2020-10-29 06:57:24,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:57:24,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-29 06:57:24,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:24,309 INFO L225 Difference]: With dead ends: 25564 [2020-10-29 06:57:24,309 INFO L226 Difference]: Without dead ends: 14923 [2020-10-29 06:57:24,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:57:24,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14923 states. [2020-10-29 06:57:24,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14923 to 14739. [2020-10-29 06:57:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14739 states. [2020-10-29 06:57:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14739 states to 14739 states and 18549 transitions. [2020-10-29 06:57:24,702 INFO L78 Accepts]: Start accepts. Automaton has 14739 states and 18549 transitions. Word has length 286 [2020-10-29 06:57:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:24,702 INFO L481 AbstractCegarLoop]: Abstraction has 14739 states and 18549 transitions. [2020-10-29 06:57:24,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:57:24,703 INFO L276 IsEmpty]: Start isEmpty. Operand 14739 states and 18549 transitions. [2020-10-29 06:57:24,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-29 06:57:24,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:24,709 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:24,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:57:24,710 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:24,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:24,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2076308480, now seen corresponding path program 1 times [2020-10-29 06:57:24,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:24,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472076327] [2020-10-29 06:57:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:25,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:25,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 06:57:25,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-29 06:57:25,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:25,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-29 06:57:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 06:57:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:25,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:25,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:25,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:25,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:25,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:25,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:57:25,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:25,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:25,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:57:25,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:25,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:57:25,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:25,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:25,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:57:25,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:25,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 06:57:25,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:25,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:57:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:57:25,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:25,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:57:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:25,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:25,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:25,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 06:57:25,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 06:57:25,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:25,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:57:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:57:26,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472076327] [2020-10-29 06:57:26,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:26,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:57:26,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591447063] [2020-10-29 06:57:26,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:57:26,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:26,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:57:26,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:57:26,018 INFO L87 Difference]: Start difference. First operand 14739 states and 18549 transitions. Second operand 5 states. [2020-10-29 06:57:39,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:39,465 INFO L93 Difference]: Finished difference Result 28783 states and 36497 transitions. [2020-10-29 06:57:39,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:57:39,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-29 06:57:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:39,520 INFO L225 Difference]: With dead ends: 28783 [2020-10-29 06:57:39,520 INFO L226 Difference]: Without dead ends: 14817 [2020-10-29 06:57:39,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:57:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14817 states. [2020-10-29 06:57:40,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14817 to 14715. [2020-10-29 06:57:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14715 states. [2020-10-29 06:57:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14715 states to 14715 states and 17575 transitions. [2020-10-29 06:57:40,057 INFO L78 Accepts]: Start accepts. Automaton has 14715 states and 17575 transitions. Word has length 313 [2020-10-29 06:57:40,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:40,058 INFO L481 AbstractCegarLoop]: Abstraction has 14715 states and 17575 transitions. [2020-10-29 06:57:40,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:57:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 14715 states and 17575 transitions. [2020-10-29 06:57:40,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-29 06:57:40,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:40,069 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:40,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:57:40,069 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:40,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1462098239, now seen corresponding path program 1 times [2020-10-29 06:57:40,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:40,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884769355] [2020-10-29 06:57:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:40,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:40,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:44,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:44,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-29 06:57:44,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:57:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4628 [2020-10-29 06:57:44,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:44,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:57:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 06:57:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 06:57:44,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:44,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:44,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:44,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:44,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:44,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:44,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:57:44,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:44,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:57:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:57:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:45,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:45,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:45,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:45,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:57:45,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:45,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:57:45,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:45,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:45,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:57:45,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:57:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:45,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:45,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:45,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:45,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:57:45,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:57:45,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-29 06:57:45,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:45,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:57:45,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:45,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-29 06:57:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:45,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:45,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:45,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:57:45,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:45,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 06:57:45,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:45,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:45,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:45,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:45,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:57:45,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:46,108 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 327 proven. 72 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 06:57:46,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884769355] [2020-10-29 06:57:46,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:46,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:57:46,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395315192] [2020-10-29 06:57:46,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:57:46,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:46,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:57:46,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:57:46,111 INFO L87 Difference]: Start difference. First operand 14715 states and 17575 transitions. Second operand 9 states. [2020-10-29 06:58:14,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:14,161 INFO L93 Difference]: Finished difference Result 43475 states and 58684 transitions. [2020-10-29 06:58:14,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 06:58:14,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 372 [2020-10-29 06:58:14,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:14,397 INFO L225 Difference]: With dead ends: 43475 [2020-10-29 06:58:14,398 INFO L226 Difference]: Without dead ends: 29533 [2020-10-29 06:58:14,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2020-10-29 06:58:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29533 states. [2020-10-29 06:58:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29533 to 26978. [2020-10-29 06:58:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26978 states. [2020-10-29 06:58:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26978 states to 26978 states and 31776 transitions. [2020-10-29 06:58:15,353 INFO L78 Accepts]: Start accepts. Automaton has 26978 states and 31776 transitions. Word has length 372 [2020-10-29 06:58:15,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:15,354 INFO L481 AbstractCegarLoop]: Abstraction has 26978 states and 31776 transitions. [2020-10-29 06:58:15,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:58:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 26978 states and 31776 transitions. [2020-10-29 06:58:15,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-29 06:58:15,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:15,365 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:15,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:58:15,366 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:15,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:15,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1332548809, now seen corresponding path program 1 times [2020-10-29 06:58:15,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:15,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222577471] [2020-10-29 06:58:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:15,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:15,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:17,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:20,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:20,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-29 06:58:20,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:58:20,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 06:58:20,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:20,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-29 06:58:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:58:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:20,724 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:58:20,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:20,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:20,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:20,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:20,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:20,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:58:20,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:20,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:58:20,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:20,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:58:20,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:20,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:20,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:20,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:20,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 06:58:20,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:20,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 06:58:20,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:20,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:58:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:58:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 06:58:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:20,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:20,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:20,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:58:20,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:20,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 06:58:20,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:20,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:20,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:20,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 06:58:20,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:21,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-29 06:58:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:21,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:21,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:21,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:58:21,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:21,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 06:58:21,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:21,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:21,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:21,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:21,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:58:21,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 06:58:21,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222577471] [2020-10-29 06:58:21,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:58:21,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:58:21,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902032094] [2020-10-29 06:58:21,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:58:21,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:21,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:58:21,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:58:21,430 INFO L87 Difference]: Start difference. First operand 26978 states and 31776 transitions. Second operand 8 states. [2020-10-29 06:58:21,587 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:58:48,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:48,728 INFO L93 Difference]: Finished difference Result 72999 states and 91116 transitions. [2020-10-29 06:58:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:58:48,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 376 [2020-10-29 06:58:48,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:48,903 INFO L225 Difference]: With dead ends: 72999 [2020-10-29 06:58:48,903 INFO L226 Difference]: Without dead ends: 46794 [2020-10-29 06:58:48,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:58:49,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46794 states. [2020-10-29 06:58:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46794 to 46547. [2020-10-29 06:58:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46547 states. [2020-10-29 06:58:50,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46547 states to 46547 states and 55917 transitions. [2020-10-29 06:58:50,227 INFO L78 Accepts]: Start accepts. Automaton has 46547 states and 55917 transitions. Word has length 376 [2020-10-29 06:58:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:50,228 INFO L481 AbstractCegarLoop]: Abstraction has 46547 states and 55917 transitions. [2020-10-29 06:58:50,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:58:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 46547 states and 55917 transitions. [2020-10-29 06:58:50,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-29 06:58:50,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:50,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:50,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:58:50,241 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:50,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:50,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1567733623, now seen corresponding path program 1 times [2020-10-29 06:58:50,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:50,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831400014] [2020-10-29 06:58:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:50,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:50,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:55,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:55,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-29 06:58:55,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:58:55,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 06:58:55,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:55,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:55,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:58:55,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 06:58:55,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 06:58:55,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:55,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:55,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:55,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:55,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:55,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:58:55,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:55,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:55,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:58:55,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:55,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:58:55,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:55,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:55,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:55,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:55,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 06:58:55,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:55,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 06:58:55,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:55,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:55,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:55,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:55,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:58:55,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:55,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 06:58:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:55,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:56,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:56,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 06:58:56,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:56,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-29 06:58:56,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:56,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:58:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 06:58:56,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:56,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-29 06:58:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:56,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking...