/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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:23:16,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:23:16,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:23:16,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:23:16,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:23:16,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:23:16,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:23:16,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:23:16,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:23:16,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:23:16,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:23:16,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:23:16,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:23:16,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:23:16,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:23:16,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:23:16,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:23:16,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:23:16,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:23:16,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:23:16,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:23:16,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:23:16,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:23:16,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:23:16,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:23:16,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:23:16,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:23:16,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:23:16,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:23:16,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:23:16,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:23:16,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:23:16,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:23:16,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:23:16,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:23:16,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:23:16,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:23:16,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:23:16,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:23:16,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:23:16,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:23:16,647 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 18:23:16,674 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:23:16,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:23:16,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:23:16,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:23:16,677 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:23:16,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:23:16,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:23:16,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:23:16,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:23:16,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:23:16,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:23:16,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:23:16,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:23:16,679 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:23:16,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:23:16,680 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:23:16,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:23:16,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:23:16,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:23:16,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:23:16,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:23:16,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:23:16,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:23:16,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:23:16,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:23:16,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:23:16,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:23:16,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:23:16,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:23:16,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:23:17,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:23:17,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:23:17,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:23:17,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:23:17,072 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:23:17,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 18:23:17,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4882cc1b5/47daf0d749c540f68561f0adc61e2130/FLAG5f1d0303f [2020-10-28 18:23:17,957 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:23:17,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 18:23:17,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4882cc1b5/47daf0d749c540f68561f0adc61e2130/FLAG5f1d0303f [2020-10-28 18:23:18,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4882cc1b5/47daf0d749c540f68561f0adc61e2130 [2020-10-28 18:23:18,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:23:18,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:23:18,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:23:18,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:23:18,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:23:18,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:23:18" (1/1) ... [2020-10-28 18:23:18,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21359f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:23:18, skipping insertion in model container [2020-10-28 18:23:18,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:23:18" (1/1) ... [2020-10-28 18:23:18,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:23:18,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:23:18,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:23:18,915 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:23:19,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:23:19,136 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:23:19,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:23:19 WrapperNode [2020-10-28 18:23:19,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:23:19,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:23:19,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:23:19,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:23:19,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:23:19" (1/1) ... [2020-10-28 18:23:19,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:23:19" (1/1) ... [2020-10-28 18:23:19,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:23:19" (1/1) ... [2020-10-28 18:23:19,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:23:19" (1/1) ... [2020-10-28 18:23:19,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:23:19" (1/1) ... [2020-10-28 18:23:19,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:23:19" (1/1) ... [2020-10-28 18:23:19,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:23:19" (1/1) ... [2020-10-28 18:23:19,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:23:19,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:23:19,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:23:19,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:23:19,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:23:19" (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 18:23:19,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:23:19,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:23:19,385 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:23:19,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:23:19,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:23:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:23:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:23:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:23:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:23:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:23:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 18:23:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:23:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:23:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:23:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:23:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:23:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:23:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:23:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:23:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:23:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:23:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:23:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:23:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:23:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:23:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:23:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:23:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:23:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:23:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:23:22,266 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:23:22,266 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:23:22,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:23:22 BoogieIcfgContainer [2020-10-28 18:23:22,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:23:22,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:23:22,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:23:22,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:23:22,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:23:18" (1/3) ... [2020-10-28 18:23:22,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7ca98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:23:22, skipping insertion in model container [2020-10-28 18:23:22,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:23:19" (2/3) ... [2020-10-28 18:23:22,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7ca98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:23:22, skipping insertion in model container [2020-10-28 18:23:22,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:23:22" (3/3) ... [2020-10-28 18:23:22,284 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 18:23:22,296 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:23:22,302 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:23:22,315 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:23:22,348 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:23:22,348 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:23:22,348 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:23:22,348 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:23:22,348 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:23:22,348 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:23:22,349 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:23:22,349 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:23:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states. [2020-10-28 18:23:22,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-28 18:23:22,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:23:22,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:22,419 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:23:22,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:23:22,424 INFO L82 PathProgramCache]: Analyzing trace with hash 250713994, now seen corresponding path program 1 times [2020-10-28 18:23:22,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:23:22,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80684864] [2020-10-28 18:23:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:23:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:24,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:25,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:25,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:27,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:27,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 18:23:27,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:23:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 18:23:27,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:27,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:27,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:23:27,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-28 18:23:27,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 18:23:27,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:23:29,558 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-28 18:23:29,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:23:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:29,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:29,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:29,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:23:29,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:23:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 18:23:29,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:29,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:23:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:23:29,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:23:29,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:29,768 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 18:23:29,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80684864] [2020-10-28 18:23:29,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:23:29,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:23:29,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049652454] [2020-10-28 18:23:29,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:23:29,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:23:29,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:23:29,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:23:29,798 INFO L87 Difference]: Start difference. First operand 754 states. Second operand 4 states. [2020-10-28 18:23:30,948 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 398 [2020-10-28 18:23:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:23:36,803 INFO L93 Difference]: Finished difference Result 1151 states and 2041 transitions. [2020-10-28 18:23:36,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:23:36,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2020-10-28 18:23:36,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:23:36,850 INFO L225 Difference]: With dead ends: 1151 [2020-10-28 18:23:36,850 INFO L226 Difference]: Without dead ends: 936 [2020-10-28 18:23:36,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:23:36,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2020-10-28 18:23:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 932. [2020-10-28 18:23:37,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2020-10-28 18:23:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1619 transitions. [2020-10-28 18:23:37,018 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1619 transitions. Word has length 208 [2020-10-28 18:23:37,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:23:37,019 INFO L481 AbstractCegarLoop]: Abstraction has 932 states and 1619 transitions. [2020-10-28 18:23:37,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:23:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1619 transitions. [2020-10-28 18:23:37,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-28 18:23:37,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:23:37,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:37,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:23:37,026 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:23:37,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:23:37,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1899313613, now seen corresponding path program 1 times [2020-10-28 18:23:37,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:23:37,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350475683] [2020-10-28 18:23:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:23:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:37,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:37,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:38,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:38,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:39,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:41,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:42,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:42,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:42,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 18:23:42,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:23:42,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-28 18:23:42,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:42,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:42,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:23:42,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:23:42,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-28 18:23:42,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:43,695 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-28 18:23:43,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:23:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:43,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:43,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:23:43,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:23:43,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 18:23:43,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:43,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:43,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:23:43,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:23:43,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:23:43,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:43,938 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 18:23:43,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350475683] [2020-10-28 18:23:43,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:23:43,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:23:43,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171099031] [2020-10-28 18:23:43,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:23:43,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:23:43,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:23:43,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:23:43,942 INFO L87 Difference]: Start difference. First operand 932 states and 1619 transitions. Second operand 5 states. [2020-10-28 18:23:52,153 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:23:52,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:23:52,309 INFO L93 Difference]: Finished difference Result 2703 states and 4693 transitions. [2020-10-28 18:23:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:23:52,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-28 18:23:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:23:52,322 INFO L225 Difference]: With dead ends: 2703 [2020-10-28 18:23:52,323 INFO L226 Difference]: Without dead ends: 1824 [2020-10-28 18:23:52,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:23:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2020-10-28 18:23:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1821. [2020-10-28 18:23:52,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1821 states. [2020-10-28 18:23:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 3151 transitions. [2020-10-28 18:23:52,424 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 3151 transitions. Word has length 212 [2020-10-28 18:23:52,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:23:52,425 INFO L481 AbstractCegarLoop]: Abstraction has 1821 states and 3151 transitions. [2020-10-28 18:23:52,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:23:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 3151 transitions. [2020-10-28 18:23:52,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-28 18:23:52,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:23:52,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:52,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:23:52,432 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:23:52,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:23:52,433 INFO L82 PathProgramCache]: Analyzing trace with hash -2062158356, now seen corresponding path program 1 times [2020-10-28 18:23:52,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:23:52,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63948202] [2020-10-28 18:23:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:23:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:52,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:52,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:53,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:53,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:54,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:55,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:56,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:57,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:57,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 18:23:57,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:23:57,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-28 18:23:57,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:57,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:23:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:23:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-28 18:23:57,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:23:58,871 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-28 18:23:58,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:23:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:58,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:58,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:58,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:23:58,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:23:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 18:23:58,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:58,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:58,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:23:58,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:23:58,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:23:58,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:59,167 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 18:23:59,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63948202] [2020-10-28 18:23:59,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:23:59,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:23:59,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244602304] [2020-10-28 18:23:59,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:23:59,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:23:59,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:23:59,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:23:59,170 INFO L87 Difference]: Start difference. First operand 1821 states and 3151 transitions. Second operand 5 states. [2020-10-28 18:24:06,128 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:24:06,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:24:06,276 INFO L93 Difference]: Finished difference Result 5305 states and 9170 transitions. [2020-10-28 18:24:06,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:24:06,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-28 18:24:06,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:24:06,302 INFO L225 Difference]: With dead ends: 5305 [2020-10-28 18:24:06,302 INFO L226 Difference]: Without dead ends: 3553 [2020-10-28 18:24:06,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:24:06,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2020-10-28 18:24:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3550. [2020-10-28 18:24:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3550 states. [2020-10-28 18:24:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 6112 transitions. [2020-10-28 18:24:06,488 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 6112 transitions. Word has length 214 [2020-10-28 18:24:06,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:24:06,489 INFO L481 AbstractCegarLoop]: Abstraction has 3550 states and 6112 transitions. [2020-10-28 18:24:06,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:24:06,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 6112 transitions. [2020-10-28 18:24:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-28 18:24:06,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:24:06,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:06,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:24:06,500 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:24:06,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:24:06,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1152707024, now seen corresponding path program 1 times [2020-10-28 18:24:06,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:24:06,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227801962] [2020-10-28 18:24:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:24:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:06,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:07,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:07,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:08,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:08,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:10,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:11,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:11,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 18:24:11,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:24:11,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 18:24:11,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:11,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:11,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:24:11,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:24:11,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-28 18:24:11,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:12,866 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-28 18:24:12,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:24:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:12,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:12,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:12,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:24:12,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:24:12,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:24:12,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:12,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:24:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:24:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:24:12,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:13,101 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 18:24:13,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227801962] [2020-10-28 18:24:13,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:24:13,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:24:13,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414662475] [2020-10-28 18:24:13,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:24:13,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:24:13,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:24:13,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:24:13,104 INFO L87 Difference]: Start difference. First operand 3550 states and 6112 transitions. Second operand 5 states. [2020-10-28 18:24:21,544 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:24:21,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:24:21,773 INFO L93 Difference]: Finished difference Result 10356 states and 17811 transitions. [2020-10-28 18:24:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:24:21,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-28 18:24:21,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:24:21,810 INFO L225 Difference]: With dead ends: 10356 [2020-10-28 18:24:21,810 INFO L226 Difference]: Without dead ends: 7013 [2020-10-28 18:24:21,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:24:21,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7013 states. [2020-10-28 18:24:22,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7013 to 7010. [2020-10-28 18:24:22,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7010 states. [2020-10-28 18:24:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7010 states to 7010 states and 12027 transitions. [2020-10-28 18:24:22,245 INFO L78 Accepts]: Start accepts. Automaton has 7010 states and 12027 transitions. Word has length 214 [2020-10-28 18:24:22,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:24:22,246 INFO L481 AbstractCegarLoop]: Abstraction has 7010 states and 12027 transitions. [2020-10-28 18:24:22,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:24:22,246 INFO L276 IsEmpty]: Start isEmpty. Operand 7010 states and 12027 transitions. [2020-10-28 18:24:22,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-28 18:24:22,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:24:22,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:22,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:24:22,264 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:24:22,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:24:22,265 INFO L82 PathProgramCache]: Analyzing trace with hash 949570257, now seen corresponding path program 1 times [2020-10-28 18:24:22,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:24:22,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629939527] [2020-10-28 18:24:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:24:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:22,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:22,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:24,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:24,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:26,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:27,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:27,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-28 18:24:27,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:24:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-28 18:24:27,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:27,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:27,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:24:27,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:24:27,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 18:24:27,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:28,648 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-28 18:24:28,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:24:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:28,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:28,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:28,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:24:28,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:24:28,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:24:28,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:28,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:24:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:24:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:24:28,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:28,796 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 18:24:28,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629939527] [2020-10-28 18:24:28,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:24:28,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:24:28,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764741780] [2020-10-28 18:24:28,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:24:28,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:24:28,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:24:28,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:24:28,799 INFO L87 Difference]: Start difference. First operand 7010 states and 12027 transitions. Second operand 5 states. [2020-10-28 18:24:36,107 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:24:36,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:24:36,364 INFO L93 Difference]: Finished difference Result 20476 states and 35103 transitions. [2020-10-28 18:24:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:24:36,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-28 18:24:36,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:24:36,426 INFO L225 Difference]: With dead ends: 20476 [2020-10-28 18:24:36,426 INFO L226 Difference]: Without dead ends: 13779 [2020-10-28 18:24:36,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:24:36,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13779 states. [2020-10-28 18:24:37,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13779 to 13776. [2020-10-28 18:24:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13776 states. [2020-10-28 18:24:37,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13776 states to 13776 states and 23515 transitions. [2020-10-28 18:24:37,491 INFO L78 Accepts]: Start accepts. Automaton has 13776 states and 23515 transitions. Word has length 215 [2020-10-28 18:24:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:24:37,492 INFO L481 AbstractCegarLoop]: Abstraction has 13776 states and 23515 transitions. [2020-10-28 18:24:37,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:24:37,492 INFO L276 IsEmpty]: Start isEmpty. Operand 13776 states and 23515 transitions. [2020-10-28 18:24:37,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-28 18:24:37,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:24:37,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:37,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:24:37,525 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:24:37,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:24:37,525 INFO L82 PathProgramCache]: Analyzing trace with hash 574503605, now seen corresponding path program 1 times [2020-10-28 18:24:37,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:24:37,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424818131] [2020-10-28 18:24:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:24:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:37,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:37,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:38,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:39,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:39,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:40,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:42,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:42,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 18:24:42,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:24:42,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 18:24:42,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:42,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:24:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:24:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 18:24:42,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:43,793 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-28 18:24:43,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:24:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:43,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:43,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:43,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:24:43,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:24:43,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:24:43,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:43,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:43,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:24:43,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:24:43,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:24:43,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:43,942 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 18:24:43,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424818131] [2020-10-28 18:24:43,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:24:43,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:24:43,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170588672] [2020-10-28 18:24:43,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:24:43,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:24:43,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:24:43,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:24:43,945 INFO L87 Difference]: Start difference. First operand 13776 states and 23515 transitions. Second operand 5 states. [2020-10-28 18:24:52,177 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:24:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:24:52,654 INFO L93 Difference]: Finished difference Result 39962 states and 68157 transitions. [2020-10-28 18:24:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:24:52,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-28 18:24:52,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:24:52,715 INFO L225 Difference]: With dead ends: 39962 [2020-10-28 18:24:52,715 INFO L226 Difference]: Without dead ends: 26947 [2020-10-28 18:24:52,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:24:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26947 states. [2020-10-28 18:24:54,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26947 to 26944. [2020-10-28 18:24:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26944 states. [2020-10-28 18:24:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26944 states to 26944 states and 45763 transitions. [2020-10-28 18:24:54,605 INFO L78 Accepts]: Start accepts. Automaton has 26944 states and 45763 transitions. Word has length 216 [2020-10-28 18:24:54,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:24:54,605 INFO L481 AbstractCegarLoop]: Abstraction has 26944 states and 45763 transitions. [2020-10-28 18:24:54,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:24:54,605 INFO L276 IsEmpty]: Start isEmpty. Operand 26944 states and 45763 transitions. [2020-10-28 18:24:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-28 18:24:54,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:24:54,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:54,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:24:54,665 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:24:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:24:54,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1804584421, now seen corresponding path program 1 times [2020-10-28 18:24:54,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:24:54,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080020125] [2020-10-28 18:24:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:24:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:54,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:54,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:55,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:55,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:55,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:56,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:56,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:57,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:57,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:59,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:59,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 18:24:59,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:24:59,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 18:24:59,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:59,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:24:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:24:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-28 18:24:59,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:25:00,956 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-28 18:25:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:25:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:00,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:00,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:00,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:25:00,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:25:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:25:00,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:00,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:25:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:25:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:25:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:25:01,103 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 18:25:01,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080020125] [2020-10-28 18:25:01,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:25:01,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:25:01,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383230336] [2020-10-28 18:25:01,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:25:01,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:25:01,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:25:01,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:25:01,105 INFO L87 Difference]: Start difference. First operand 26944 states and 45763 transitions. Second operand 5 states. [2020-10-28 18:25:10,715 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:25:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:25:11,526 INFO L93 Difference]: Finished difference Result 78502 states and 133152 transitions. [2020-10-28 18:25:11,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:25:11,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-28 18:25:11,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:25:11,643 INFO L225 Difference]: With dead ends: 78502 [2020-10-28 18:25:11,643 INFO L226 Difference]: Without dead ends: 53315 [2020-10-28 18:25:11,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:25:11,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53315 states. [2020-10-28 18:25:15,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53315 to 53312. [2020-10-28 18:25:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53312 states. [2020-10-28 18:25:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53312 states to 53312 states and 90064 transitions. [2020-10-28 18:25:15,103 INFO L78 Accepts]: Start accepts. Automaton has 53312 states and 90064 transitions. Word has length 216 [2020-10-28 18:25:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:25:15,103 INFO L481 AbstractCegarLoop]: Abstraction has 53312 states and 90064 transitions. [2020-10-28 18:25:15,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:25:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand 53312 states and 90064 transitions. [2020-10-28 18:25:15,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-28 18:25:15,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:25:15,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:15,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:25:15,178 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:25:15,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:25:15,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1617337738, now seen corresponding path program 1 times [2020-10-28 18:25:15,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:25:15,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40262866] [2020-10-28 18:25:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:25:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:15,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:15,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:16,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:16,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:16,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:17,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:20,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:20,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-28 18:25:20,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:25:20,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:25:20,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:20,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:20,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:25:20,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:25:20,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-28 18:25:20,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:25:21,441 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-28 18:25:21,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:25:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:21,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:21,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:25:21,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:25:21,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:25:21,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:21,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:21,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:25:21,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:25:21,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:25:21,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:25:21,577 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 18:25:21,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40262866] [2020-10-28 18:25:21,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:25:21,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:25:21,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122023951] [2020-10-28 18:25:21,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:25:21,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:25:21,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:25:21,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:25:21,579 INFO L87 Difference]: Start difference. First operand 53312 states and 90064 transitions. Second operand 5 states. [2020-10-28 18:25:33,577 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:25:35,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:25:35,578 INFO L93 Difference]: Finished difference Result 153474 states and 258969 transitions. [2020-10-28 18:25:35,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:25:35,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-28 18:25:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:25:35,902 INFO L225 Difference]: With dead ends: 153474 [2020-10-28 18:25:35,902 INFO L226 Difference]: Without dead ends: 103003 [2020-10-28 18:25:35,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:25:36,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103003 states. [2020-10-28 18:25:42,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103003 to 103000. [2020-10-28 18:25:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103000 states. [2020-10-28 18:25:43,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103000 states to 103000 states and 173197 transitions. [2020-10-28 18:25:43,284 INFO L78 Accepts]: Start accepts. Automaton has 103000 states and 173197 transitions. Word has length 217 [2020-10-28 18:25:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:25:43,285 INFO L481 AbstractCegarLoop]: Abstraction has 103000 states and 173197 transitions. [2020-10-28 18:25:43,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:25:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 103000 states and 173197 transitions. [2020-10-28 18:25:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-28 18:25:43,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:25:43,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:43,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:25:43,595 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:25:43,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:25:43,595 INFO L82 PathProgramCache]: Analyzing trace with hash -413044529, now seen corresponding path program 1 times [2020-10-28 18:25:43,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:25:43,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909790875] [2020-10-28 18:25:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:25:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:43,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:44,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:44,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:45,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:45,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:46,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:48,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:48,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 18:25:48,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:25:48,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 18:25:48,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:48,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:48,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:25:48,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-28 18:25:48,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 18:25:48,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:25:49,909 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-28 18:25:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:25:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:49,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:49,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:49,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:25:49,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:25:49,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:25:49,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:49,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:25:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:25:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:25:49,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:25:49,993 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 18:25:49,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909790875] [2020-10-28 18:25:49,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:25:49,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:25:49,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429432981] [2020-10-28 18:25:49,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:25:49,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:25:49,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:25:49,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:25:49,995 INFO L87 Difference]: Start difference. First operand 103000 states and 173197 transitions. Second operand 4 states. [2020-10-28 18:25:51,120 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 398 [2020-10-28 18:26:06,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:26:06,440 INFO L93 Difference]: Finished difference Result 189662 states and 318225 transitions. [2020-10-28 18:26:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:26:06,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2020-10-28 18:26:06,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:26:06,652 INFO L225 Difference]: With dead ends: 189662 [2020-10-28 18:26:06,652 INFO L226 Difference]: Without dead ends: 144987 [2020-10-28 18:26:06,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:26:06,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144987 states. [2020-10-28 18:26:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144987 to 144728. [2020-10-28 18:26:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144728 states. [2020-10-28 18:26:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144728 states to 144728 states and 242445 transitions. [2020-10-28 18:26:17,684 INFO L78 Accepts]: Start accepts. Automaton has 144728 states and 242445 transitions. Word has length 218 [2020-10-28 18:26:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:26:17,685 INFO L481 AbstractCegarLoop]: Abstraction has 144728 states and 242445 transitions. [2020-10-28 18:26:17,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:26:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 144728 states and 242445 transitions. [2020-10-28 18:26:17,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-28 18:26:17,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:26:17,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:17,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:26:17,777 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:26:17,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:26:17,777 INFO L82 PathProgramCache]: Analyzing trace with hash -491136376, now seen corresponding path program 1 times [2020-10-28 18:26:17,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:26:17,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699296081] [2020-10-28 18:26:17,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:26:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:26:18,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:18,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:19,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:19,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:23,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:26:23,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-28 18:26:23,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:26:23,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 18:26:23,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:26:23,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:26:23,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:26:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:26:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-28 18:26:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:26:24,406 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-28 18:26:24,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:26:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:26:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:24,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:26:24,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:26:24,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:26:24,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:26:24,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:26:24,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:26:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:26:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:26:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:26:24,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:26:24,532 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 18:26:24,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699296081] [2020-10-28 18:26:24,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:26:24,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:26:24,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566291918] [2020-10-28 18:26:24,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:26:24,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:26:24,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:26:24,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:26:24,534 INFO L87 Difference]: Start difference. First operand 144728 states and 242445 transitions. Second operand 5 states. [2020-10-28 18:26:42,382 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:26:53,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:26:53,000 INFO L93 Difference]: Finished difference Result 426672 states and 714432 transitions. [2020-10-28 18:26:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:26:53,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-28 18:26:53,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:26:53,503 INFO L225 Difference]: With dead ends: 426672 [2020-10-28 18:26:53,504 INFO L226 Difference]: Without dead ends: 284894 [2020-10-28 18:26:53,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:26:53,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284894 states.