/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:39:58,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:39:58,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:39:58,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:39:58,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:39:58,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:39:58,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:39:58,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:39:58,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:39:58,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:39:58,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:39:58,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:39:58,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:39:58,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:39:58,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:39:58,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:39:58,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:39:58,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:39:58,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:39:58,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:39:58,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:39:58,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:39:58,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:39:58,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:39:58,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:39:58,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:39:58,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:39:58,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:39:58,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:39:58,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:39:58,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:39:58,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:39:58,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:39:58,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:39:58,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:39:58,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:39:58,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:39:58,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:39:58,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:39:58,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:39:58,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:39:58,244 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 [2020-10-28 18:39:58,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:39:58,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:39:58,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:39:58,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:39:58,304 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:39:58,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:39:58,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:39:58,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:39:58,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:39:58,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:39:58,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:39:58,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:39:58,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:39:58,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:39:58,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:39:58,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:39:58,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:39:58,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:39:58,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:39:58,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:39:58,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:39:58,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:39:58,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:39:58,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:39:58,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:39:58,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:39:58,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:39:58,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:39:58,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:39:58,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:39:58,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:39:58,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:39:58,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:39:58,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:39:58,848 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:39:58,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2020-10-28 18:39:58,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5f26ea91/be99c01f86c3401597057c38dfc2757a/FLAGce5c91ffd [2020-10-28 18:40:00,020 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:40:00,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2020-10-28 18:40:00,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5f26ea91/be99c01f86c3401597057c38dfc2757a/FLAGce5c91ffd [2020-10-28 18:40:00,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5f26ea91/be99c01f86c3401597057c38dfc2757a [2020-10-28 18:40:00,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:40:00,553 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:40:00,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:40:00,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:40:00,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:40:00,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:40:00" (1/1) ... [2020-10-28 18:40:00,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae9f26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:00, skipping insertion in model container [2020-10-28 18:40:00,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:40:00" (1/1) ... [2020-10-28 18:40:00,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:40:00,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:40:01,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:40:01,965 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:40:02,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:40:02,682 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:40:02,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:02 WrapperNode [2020-10-28 18:40:02,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:40:02,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:40:02,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:40:02,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:40:02,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:02" (1/1) ... [2020-10-28 18:40:02,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:02" (1/1) ... [2020-10-28 18:40:02,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:02" (1/1) ... [2020-10-28 18:40:02,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:02" (1/1) ... [2020-10-28 18:40:02,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:02" (1/1) ... [2020-10-28 18:40:02,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:02" (1/1) ... [2020-10-28 18:40:02,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:02" (1/1) ... [2020-10-28 18:40:02,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:40:02,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:40:02,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:40:02,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:40:02,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:02" (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 [2020-10-28 18:40:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:40:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:40:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:40:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:40:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:40:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:40:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:40:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:40:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:40:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:40:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:40:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:40:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:40:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:40:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:40:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:40:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:40:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:40:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:40:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:40:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 18:40:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:40:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:40:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:40:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:40:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:40:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:40:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:40:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:40:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:40:06,803 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:40:06,803 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:40:06,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:40:06 BoogieIcfgContainer [2020-10-28 18:40:06,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:40:06,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:40:06,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:40:06,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:40:06,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:40:00" (1/3) ... [2020-10-28 18:40:06,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4312fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:40:06, skipping insertion in model container [2020-10-28 18:40:06,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:02" (2/3) ... [2020-10-28 18:40:06,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4312fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:40:06, skipping insertion in model container [2020-10-28 18:40:06,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:40:06" (3/3) ... [2020-10-28 18:40:06,820 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2020-10-28 18:40:06,834 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:40:06,841 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:40:06,855 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:40:06,905 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:40:06,906 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:40:06,906 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:40:06,906 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:40:06,906 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:40:06,906 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:40:06,906 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:40:06,907 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:40:06,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states. [2020-10-28 18:40:07,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 18:40:07,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:07,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:40:07,024 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:07,033 INFO L82 PathProgramCache]: Analyzing trace with hash 2046227063, now seen corresponding path program 1 times [2020-10-28 18:40:07,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:07,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812232378] [2020-10-28 18:40:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:07,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:08,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:08,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:08,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:09,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:10,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:10,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:10,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:11,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:11,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:12,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:12,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 18:40:12,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:40:12,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:40:12,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:12,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:40:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:40:12,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 18:40:12,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:40:14,463 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:40:14,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:14,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:14,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:14,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:14,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:14,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 18:40:14,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:14,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:40:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:40:14,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:40:14,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812232378] [2020-10-28 18:40:14,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:14,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:40:14,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002315230] [2020-10-28 18:40:14,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:40:14,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:14,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:40:14,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:40:14,725 INFO L87 Difference]: Start difference. First operand 1140 states. Second operand 6 states. [2020-10-28 18:40:16,715 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 523 [2020-10-28 18:40:26,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:26,963 INFO L93 Difference]: Finished difference Result 1707 states and 3047 transitions. [2020-10-28 18:40:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:40:26,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-28 18:40:26,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:27,010 INFO L225 Difference]: With dead ends: 1707 [2020-10-28 18:40:27,010 INFO L226 Difference]: Without dead ends: 952 [2020-10-28 18:40:27,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:40:27,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-10-28 18:40:27,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2020-10-28 18:40:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-10-28 18:40:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1222 transitions. [2020-10-28 18:40:27,175 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1222 transitions. Word has length 91 [2020-10-28 18:40:27,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:27,176 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1222 transitions. [2020-10-28 18:40:27,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:40:27,176 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1222 transitions. [2020-10-28 18:40:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 18:40:27,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:27,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:40:27,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:40:27,184 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:27,185 INFO L82 PathProgramCache]: Analyzing trace with hash 956990493, now seen corresponding path program 1 times [2020-10-28 18:40:27,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:27,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231422020] [2020-10-28 18:40:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:27,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:27,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:27,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:27,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:28,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:28,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:31,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:31,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:31,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:32,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:32,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 18:40:32,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:40:32,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 18:40:32,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:32,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:32,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:40:32,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:40:32,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 18:40:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:40:34,129 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:40:34,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:34,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:34,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:34,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:34,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 18:40:34,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:34,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:34,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:40:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:40:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:40:34,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231422020] [2020-10-28 18:40:34,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:34,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:40:34,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506831375] [2020-10-28 18:40:34,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:40:34,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:34,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:40:34,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:40:34,354 INFO L87 Difference]: Start difference. First operand 952 states and 1222 transitions. Second operand 6 states. [2020-10-28 18:40:36,216 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 523 [2020-10-28 18:40:42,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:42,144 INFO L93 Difference]: Finished difference Result 1507 states and 2016 transitions. [2020-10-28 18:40:42,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:40:42,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-28 18:40:42,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:42,154 INFO L225 Difference]: With dead ends: 1507 [2020-10-28 18:40:42,154 INFO L226 Difference]: Without dead ends: 824 [2020-10-28 18:40:42,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:40:42,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-10-28 18:40:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2020-10-28 18:40:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2020-10-28 18:40:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1077 transitions. [2020-10-28 18:40:42,211 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1077 transitions. Word has length 92 [2020-10-28 18:40:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:42,212 INFO L481 AbstractCegarLoop]: Abstraction has 824 states and 1077 transitions. [2020-10-28 18:40:42,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:40:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1077 transitions. [2020-10-28 18:40:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 18:40:42,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:42,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:40:42,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:40:42,217 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:42,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:42,217 INFO L82 PathProgramCache]: Analyzing trace with hash -378369255, now seen corresponding path program 1 times [2020-10-28 18:40:42,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:42,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136665848] [2020-10-28 18:40:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:42,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:42,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:42,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:44,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:44,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:44,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:45,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:45,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:45,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:47,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:47,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 18:40:47,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:40:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 18:40:47,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:47,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:40:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:40:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 18:40:47,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:49,366 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:40:49,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:49,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:49,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:49,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:49,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 18:40:49,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:49,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:40:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:49,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:40:49,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:40:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:40:49,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136665848] [2020-10-28 18:40:49,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:49,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:40:49,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728833101] [2020-10-28 18:40:49,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:40:49,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:49,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:40:49,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:40:49,487 INFO L87 Difference]: Start difference. First operand 824 states and 1077 transitions. Second operand 7 states. [2020-10-28 18:40:51,532 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 527 [2020-10-28 18:40:58,733 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 525 [2020-10-28 18:41:00,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:00,571 INFO L93 Difference]: Finished difference Result 1366 states and 1802 transitions. [2020-10-28 18:41:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 18:41:00,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-28 18:41:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:00,577 INFO L225 Difference]: With dead ends: 1366 [2020-10-28 18:41:00,578 INFO L226 Difference]: Without dead ends: 1033 [2020-10-28 18:41:00,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-28 18:41:00,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-10-28 18:41:00,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 824. [2020-10-28 18:41:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2020-10-28 18:41:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1076 transitions. [2020-10-28 18:41:00,633 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1076 transitions. Word has length 93 [2020-10-28 18:41:00,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:00,634 INFO L481 AbstractCegarLoop]: Abstraction has 824 states and 1076 transitions. [2020-10-28 18:41:00,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:41:00,634 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1076 transitions. [2020-10-28 18:41:00,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 18:41:00,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:00,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:41:00,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:41:00,637 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:00,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:00,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1309755102, now seen corresponding path program 1 times [2020-10-28 18:41:00,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:00,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238455280] [2020-10-28 18:41:00,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:00,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:01,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:01,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:02,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:02,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:02,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:05,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:05,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 18:41:05,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:41:05,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 18:41:05,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:05,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:41:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:41:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 18:41:05,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:07,695 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:41:07,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:07,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:07,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:07,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:07,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 18:41:07,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:07,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:07,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:07,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:07,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:41:07,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:07,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238455280] [2020-10-28 18:41:07,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:07,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:41:07,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711305636] [2020-10-28 18:41:07,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:41:07,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:07,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:41:07,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:41:07,833 INFO L87 Difference]: Start difference. First operand 824 states and 1076 transitions. Second operand 6 states. [2020-10-28 18:41:09,901 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 523 [2020-10-28 18:41:15,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:15,219 INFO L93 Difference]: Finished difference Result 1379 states and 1868 transitions. [2020-10-28 18:41:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:41:15,222 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-28 18:41:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:15,227 INFO L225 Difference]: With dead ends: 1379 [2020-10-28 18:41:15,227 INFO L226 Difference]: Without dead ends: 736 [2020-10-28 18:41:15,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:41:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2020-10-28 18:41:15,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2020-10-28 18:41:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-10-28 18:41:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 979 transitions. [2020-10-28 18:41:15,273 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 979 transitions. Word has length 93 [2020-10-28 18:41:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:15,274 INFO L481 AbstractCegarLoop]: Abstraction has 736 states and 979 transitions. [2020-10-28 18:41:15,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:41:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 979 transitions. [2020-10-28 18:41:15,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 18:41:15,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:15,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:41:15,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:41:15,277 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:15,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:15,277 INFO L82 PathProgramCache]: Analyzing trace with hash -10528974, now seen corresponding path program 1 times [2020-10-28 18:41:15,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:15,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283643732] [2020-10-28 18:41:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:15,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:15,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:15,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:16,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:16,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:16,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:17,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:17,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:20,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:20,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 18:41:20,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:41:20,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:41:20,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:20,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:20,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:41:20,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:41:20,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 18:41:20,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:22,326 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:41:22,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:22,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:22,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:22,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:22,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:22,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:41:22,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:22,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:22,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:22,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:22,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:22,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:22,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283643732] [2020-10-28 18:41:22,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:22,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:41:22,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433285451] [2020-10-28 18:41:22,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:41:22,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:22,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:41:22,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:41:22,423 INFO L87 Difference]: Start difference. First operand 736 states and 979 transitions. Second operand 8 states. [2020-10-28 18:41:24,400 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 524 [2020-10-28 18:41:29,389 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-28 18:41:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:30,360 INFO L93 Difference]: Finished difference Result 967 states and 1289 transitions. [2020-10-28 18:41:30,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 18:41:30,361 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-10-28 18:41:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:30,366 INFO L225 Difference]: With dead ends: 967 [2020-10-28 18:41:30,366 INFO L226 Difference]: Without dead ends: 676 [2020-10-28 18:41:30,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:41:30,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-10-28 18:41:30,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 521. [2020-10-28 18:41:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-10-28 18:41:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 666 transitions. [2020-10-28 18:41:30,407 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 666 transitions. Word has length 94 [2020-10-28 18:41:30,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:30,407 INFO L481 AbstractCegarLoop]: Abstraction has 521 states and 666 transitions. [2020-10-28 18:41:30,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:41:30,407 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 666 transitions. [2020-10-28 18:41:30,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 18:41:30,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:30,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:41:30,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:41:30,410 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:30,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:30,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1551298652, now seen corresponding path program 1 times [2020-10-28 18:41:30,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:30,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484328299] [2020-10-28 18:41:30,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:30,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:30,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:30,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:32,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:32,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:33,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:33,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:34,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:34,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:35,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:35,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:35,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 18:41:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:41:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:41:35,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:35,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:41:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:41:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 18:41:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:37,537 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:41:37,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:37,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:37,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:37,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:37,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:37,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:41:37,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:37,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:37,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:37,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484328299] [2020-10-28 18:41:37,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:37,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:41:37,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522077672] [2020-10-28 18:41:37,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:41:37,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:37,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:41:37,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:41:37,669 INFO L87 Difference]: Start difference. First operand 521 states and 666 transitions. Second operand 8 states. [2020-10-28 18:41:41,643 WARN L193 SmtUtils]: Spent 3.83 s on a formula simplification. DAG size of input: 531 DAG size of output: 527 [2020-10-28 18:41:47,427 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 519 [2020-10-28 18:41:50,661 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 518 [2020-10-28 18:41:50,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:50,875 INFO L93 Difference]: Finished difference Result 1419 states and 1965 transitions. [2020-10-28 18:41:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 18:41:50,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-28 18:41:50,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:50,881 INFO L225 Difference]: With dead ends: 1419 [2020-10-28 18:41:50,881 INFO L226 Difference]: Without dead ends: 1089 [2020-10-28 18:41:50,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2020-10-28 18:41:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2020-10-28 18:41:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 531. [2020-10-28 18:41:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-10-28 18:41:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 676 transitions. [2020-10-28 18:41:50,928 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 676 transitions. Word has length 96 [2020-10-28 18:41:50,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:50,928 INFO L481 AbstractCegarLoop]: Abstraction has 531 states and 676 transitions. [2020-10-28 18:41:50,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:41:50,929 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 676 transitions. [2020-10-28 18:41:50,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 18:41:50,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:50,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:41:50,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:41:50,931 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:50,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:50,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1837488069, now seen corresponding path program 1 times [2020-10-28 18:41:50,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:50,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913075866] [2020-10-28 18:41:50,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:51,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:51,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:51,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:52,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:52,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:53,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:53,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:54,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:55,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:55,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:56,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:56,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 18:41:56,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:41:56,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 18:41:56,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:56,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:56,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:41:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:41:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 18:41:56,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:57,978 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:41:57,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:58,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:58,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:58,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:58,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:58,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 18:41:58,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:58,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:41:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:58,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913075866] [2020-10-28 18:41:58,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:58,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:41:58,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466907222] [2020-10-28 18:41:58,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:41:58,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:58,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:41:58,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:41:58,093 INFO L87 Difference]: Start difference. First operand 531 states and 676 transitions. Second operand 6 states. [2020-10-28 18:42:00,109 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 523 [2020-10-28 18:42:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:03,740 INFO L93 Difference]: Finished difference Result 881 states and 1164 transitions. [2020-10-28 18:42:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:42:03,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-28 18:42:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:03,745 INFO L225 Difference]: With dead ends: 881 [2020-10-28 18:42:03,745 INFO L226 Difference]: Without dead ends: 475 [2020-10-28 18:42:03,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:42:03,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-10-28 18:42:03,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2020-10-28 18:42:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-28 18:42:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 615 transitions. [2020-10-28 18:42:03,788 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 615 transitions. Word has length 96 [2020-10-28 18:42:03,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:03,788 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 615 transitions. [2020-10-28 18:42:03,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:03,789 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 615 transitions. [2020-10-28 18:42:03,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 18:42:03,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:03,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:03,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:42:03,791 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:03,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:03,791 INFO L82 PathProgramCache]: Analyzing trace with hash -281612361, now seen corresponding path program 1 times [2020-10-28 18:42:03,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:03,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60456241] [2020-10-28 18:42:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:03,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:03,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:04,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:04,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:04,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:05,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:05,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:05,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:08,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 18:42:08,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:42:08,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:42:08,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:08,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:42:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:42:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 18:42:08,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:10,887 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:42:10,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:10,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:10,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:10,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:10,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:10,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:42:10,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:10,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:10,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:10,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:10,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:10,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:10,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60456241] [2020-10-28 18:42:10,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:10,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:42:10,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175296183] [2020-10-28 18:42:10,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:42:10,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:10,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:42:10,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:42:10,964 INFO L87 Difference]: Start difference. First operand 475 states and 615 transitions. Second operand 8 states. [2020-10-28 18:42:13,033 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-28 18:42:18,088 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 525 [2020-10-28 18:42:19,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:19,768 INFO L93 Difference]: Finished difference Result 917 states and 1246 transitions. [2020-10-28 18:42:19,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 18:42:19,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-10-28 18:42:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:19,778 INFO L225 Difference]: With dead ends: 917 [2020-10-28 18:42:19,778 INFO L226 Difference]: Without dead ends: 830 [2020-10-28 18:42:19,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-28 18:42:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-10-28 18:42:19,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 475. [2020-10-28 18:42:19,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-28 18:42:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 614 transitions. [2020-10-28 18:42:19,826 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 614 transitions. Word has length 97 [2020-10-28 18:42:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:19,826 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 614 transitions. [2020-10-28 18:42:19,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:42:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 614 transitions. [2020-10-28 18:42:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 18:42:19,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:19,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:19,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:42:19,829 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:19,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:19,830 INFO L82 PathProgramCache]: Analyzing trace with hash 326073910, now seen corresponding path program 1 times [2020-10-28 18:42:19,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:19,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478181902] [2020-10-28 18:42:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:19,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:19,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:20,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:20,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:22,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:24,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:24,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:24,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 18:42:24,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:42:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 18:42:24,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:24,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:42:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:42:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 18:42:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:26,898 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:42:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:26,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:26,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:26,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:26,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:42:26,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:26,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:26,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:26,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478181902] [2020-10-28 18:42:26,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:26,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:42:26,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511346262] [2020-10-28 18:42:26,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:42:26,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:26,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:42:26,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:42:26,993 INFO L87 Difference]: Start difference. First operand 475 states and 614 transitions. Second operand 8 states. [2020-10-28 18:42:29,026 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-28 18:42:34,044 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 525 [2020-10-28 18:42:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:35,753 INFO L93 Difference]: Finished difference Result 945 states and 1286 transitions. [2020-10-28 18:42:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 18:42:35,754 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-10-28 18:42:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:35,758 INFO L225 Difference]: With dead ends: 945 [2020-10-28 18:42:35,758 INFO L226 Difference]: Without dead ends: 838 [2020-10-28 18:42:35,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-28 18:42:35,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-10-28 18:42:35,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 475. [2020-10-28 18:42:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-28 18:42:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 613 transitions. [2020-10-28 18:42:35,811 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 613 transitions. Word has length 97 [2020-10-28 18:42:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:35,812 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 613 transitions. [2020-10-28 18:42:35,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:42:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 613 transitions. [2020-10-28 18:42:35,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 18:42:35,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:35,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:35,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:42:35,814 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:35,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:35,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1748849839, now seen corresponding path program 1 times [2020-10-28 18:42:35,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:35,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729213640] [2020-10-28 18:42:35,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:35,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:38,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:38,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:39,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:40,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:40,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:40,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 18:42:40,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:42:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 18:42:40,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:40,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:42:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:42:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 18:42:40,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:42,831 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:42:42,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:42,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:42,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:42,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:42,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:42:42,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:42,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:42,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729213640] [2020-10-28 18:42:42,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:42,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:42:42,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386955465] [2020-10-28 18:42:42,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:42:42,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:42,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:42:42,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:42:42,911 INFO L87 Difference]: Start difference. First operand 475 states and 613 transitions. Second operand 8 states. [2020-10-28 18:42:44,964 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-28 18:42:50,200 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 525 [2020-10-28 18:42:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:51,628 INFO L93 Difference]: Finished difference Result 921 states and 1248 transitions. [2020-10-28 18:42:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 18:42:51,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-10-28 18:42:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:51,636 INFO L225 Difference]: With dead ends: 921 [2020-10-28 18:42:51,636 INFO L226 Difference]: Without dead ends: 830 [2020-10-28 18:42:51,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-28 18:42:51,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-10-28 18:42:51,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 475. [2020-10-28 18:42:51,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-28 18:42:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 612 transitions. [2020-10-28 18:42:51,712 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 612 transitions. Word has length 97 [2020-10-28 18:42:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:51,712 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 612 transitions. [2020-10-28 18:42:51,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:42:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 612 transitions. [2020-10-28 18:42:51,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 18:42:51,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:51,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:51,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:42:51,718 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:51,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:51,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1423160528, now seen corresponding path program 1 times [2020-10-28 18:42:51,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:51,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327742222] [2020-10-28 18:42:51,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:52,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:55,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:55,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:55,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:56,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:56,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 18:42:56,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:42:56,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 18:42:56,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:56,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:42:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:42:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 18:42:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:58,696 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:42:58,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:58,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:58,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:58,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:58,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 18:42:58,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:58,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:42:58,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:58,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327742222] [2020-10-28 18:42:58,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:58,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:42:58,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368657199] [2020-10-28 18:42:58,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:42:58,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:58,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:42:58,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:58,804 INFO L87 Difference]: Start difference. First operand 475 states and 612 transitions. Second operand 6 states. [2020-10-28 18:43:00,817 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-28 18:43:05,512 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 524 [2020-10-28 18:43:06,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:06,181 INFO L93 Difference]: Finished difference Result 1039 states and 1393 transitions. [2020-10-28 18:43:06,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:43:06,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-28 18:43:06,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:06,185 INFO L225 Difference]: With dead ends: 1039 [2020-10-28 18:43:06,185 INFO L226 Difference]: Without dead ends: 655 [2020-10-28 18:43:06,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:43:06,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2020-10-28 18:43:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 620. [2020-10-28 18:43:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-10-28 18:43:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 838 transitions. [2020-10-28 18:43:06,261 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 838 transitions. Word has length 97 [2020-10-28 18:43:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:06,262 INFO L481 AbstractCegarLoop]: Abstraction has 620 states and 838 transitions. [2020-10-28 18:43:06,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:43:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 838 transitions. [2020-10-28 18:43:06,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 18:43:06,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:06,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:43:06,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:43:06,264 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:06,265 INFO L82 PathProgramCache]: Analyzing trace with hash -2002716552, now seen corresponding path program 1 times [2020-10-28 18:43:06,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:06,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958554603] [2020-10-28 18:43:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:06,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:06,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:06,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:07,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:09,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:11,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:11,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 18:43:11,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:43:11,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:43:11,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:11,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:11,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:43:11,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:43:11,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 18:43:11,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:13,301 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:43:13,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:13,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:13,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:13,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:13,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 18:43:13,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:13,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:13,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:43:13,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958554603] [2020-10-28 18:43:13,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:13,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:43:13,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114881842] [2020-10-28 18:43:13,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:43:13,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:13,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:43:13,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:43:13,403 INFO L87 Difference]: Start difference. First operand 620 states and 838 transitions. Second operand 8 states. [2020-10-28 18:43:15,376 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-28 18:43:20,036 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 525 [2020-10-28 18:43:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:21,491 INFO L93 Difference]: Finished difference Result 1224 states and 1702 transitions. [2020-10-28 18:43:21,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 18:43:21,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-10-28 18:43:21,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:21,495 INFO L225 Difference]: With dead ends: 1224 [2020-10-28 18:43:21,496 INFO L226 Difference]: Without dead ends: 952 [2020-10-28 18:43:21,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-28 18:43:21,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-10-28 18:43:21,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 620. [2020-10-28 18:43:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-10-28 18:43:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 836 transitions. [2020-10-28 18:43:21,574 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 836 transitions. Word has length 98 [2020-10-28 18:43:21,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:21,574 INFO L481 AbstractCegarLoop]: Abstraction has 620 states and 836 transitions. [2020-10-28 18:43:21,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:43:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 836 transitions. [2020-10-28 18:43:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 18:43:21,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:21,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:43:21,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:43:21,577 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:21,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:21,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1590046160, now seen corresponding path program 1 times [2020-10-28 18:43:21,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:21,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437629744] [2020-10-28 18:43:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:21,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:21,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:22,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:22,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:23,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:23,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:25,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:25,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:25,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:26,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:26,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 18:43:26,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:43:26,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:43:26,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:26,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:26,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 18:43:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:43:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 18:43:26,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:28,683 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-28 18:43:28,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:28,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:28,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:28,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:28,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:28,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 18:43:28,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:28,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:43:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:43:28,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:43:28,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437629744] [2020-10-28 18:43:28,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:28,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 18:43:28,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216178359] [2020-10-28 18:43:28,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 18:43:28,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:28,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 18:43:28,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:43:28,792 INFO L87 Difference]: Start difference. First operand 620 states and 836 transitions. Second operand 10 states. [2020-10-28 18:43:32,796 WARN L193 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 533 DAG size of output: 529