/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:30:28,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:30:28,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:30:28,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:30:28,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:30:28,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:30:28,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:30:28,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:30:28,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:30:28,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:30:28,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:30:28,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:30:28,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:30:28,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:30:28,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:30:28,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:30:28,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:30:28,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:30:28,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:30:28,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:30:28,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:30:28,962 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:30:28,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:30:28,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:30:28,967 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:30:28,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:30:28,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:30:28,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:30:28,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:30:28,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:30:28,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:30:28,970 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:30:28,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:30:28,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:30:28,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:30:28,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:30:28,971 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:30:28,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:30:28,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:30:28,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:30:28,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:30:28,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:30:28,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:30:28,973 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:30:29,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:30:29,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:30:29,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:30:29,392 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:30:29,393 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:30:29,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2021-02-24 00:30:29,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368648bea/1f19d3abe7264db29ebe00b34bb6a1a6/FLAG2ce0f398a [2021-02-24 00:30:30,141 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:30:30,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2021-02-24 00:30:30,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368648bea/1f19d3abe7264db29ebe00b34bb6a1a6/FLAG2ce0f398a [2021-02-24 00:30:30,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368648bea/1f19d3abe7264db29ebe00b34bb6a1a6 [2021-02-24 00:30:30,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:30:30,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:30:30,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:30:30,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:30:30,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:30:30,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:30:30" (1/1) ... [2021-02-24 00:30:30,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a91fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:30, skipping insertion in model container [2021-02-24 00:30:30,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:30:30" (1/1) ... [2021-02-24 00:30:30,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:30:30,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:30:30,731 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-1.c[321,334] [2021-02-24 00:30:30,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:30:30,757 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:30:30,771 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-1.c[321,334] [2021-02-24 00:30:30,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:30:30,792 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:30:30,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:30 WrapperNode [2021-02-24 00:30:30,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:30:30,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:30:30,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:30:30,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:30:30,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:30" (1/1) ... [2021-02-24 00:30:30,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:30" (1/1) ... [2021-02-24 00:30:30,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:30" (1/1) ... [2021-02-24 00:30:30,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:30" (1/1) ... [2021-02-24 00:30:30,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:30" (1/1) ... [2021-02-24 00:30:30,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:30" (1/1) ... [2021-02-24 00:30:30,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:30" (1/1) ... [2021-02-24 00:30:30,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:30:30,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:30:30,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:30:30,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:30:30,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-24 00:30:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:30:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:30:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:30:30,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:30:30,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:30:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:30:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:30:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:30:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:30:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:30:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:30:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:30:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:30:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:30:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:30:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:30:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:30:31,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:30:31,246 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 00:30:31,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:30:31 BoogieIcfgContainer [2021-02-24 00:30:31,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:30:31,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:30:31,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:30:31,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:30:31,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:30:30" (1/3) ... [2021-02-24 00:30:31,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4e0352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:30:31, skipping insertion in model container [2021-02-24 00:30:31,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:30" (2/3) ... [2021-02-24 00:30:31,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4e0352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:30:31, skipping insertion in model container [2021-02-24 00:30:31,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:30:31" (3/3) ... [2021-02-24 00:30:31,286 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2021-02-24 00:30:31,304 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:30:31,314 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:30:31,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:30:31,377 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:30:31,378 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:30:31,378 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:30:31,378 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:30:31,378 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:30:31,378 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:30:31,379 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:30:31,379 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:30:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2021-02-24 00:30:31,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 00:30:31,407 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:31,408 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] [2021-02-24 00:30:31,408 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:31,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:31,415 INFO L82 PathProgramCache]: Analyzing trace with hash -2146802473, now seen corresponding path program 1 times [2021-02-24 00:30:31,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:31,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748079808] [2021-02-24 00:30:31,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:31,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:31,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:31,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:31,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:31,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:31,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:31,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:31,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:31,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748079808] [2021-02-24 00:30:31,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:30:31,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:30:31,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284362936] [2021-02-24 00:30:31,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:30:31,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:31,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:30:31,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:30:31,757 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2021-02-24 00:30:31,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:31,860 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2021-02-24 00:30:31,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:30:31,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2021-02-24 00:30:31,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:31,872 INFO L225 Difference]: With dead ends: 91 [2021-02-24 00:30:31,872 INFO L226 Difference]: Without dead ends: 49 [2021-02-24 00:30:31,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:30:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-02-24 00:30:31,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-02-24 00:30:31,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-24 00:30:31,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-02-24 00:30:31,938 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 31 [2021-02-24 00:30:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:31,939 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-02-24 00:30:31,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:30:31,939 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-02-24 00:30:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 00:30:31,941 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:31,941 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] [2021-02-24 00:30:31,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:30:31,942 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:31,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:31,943 INFO L82 PathProgramCache]: Analyzing trace with hash 2140776655, now seen corresponding path program 1 times [2021-02-24 00:30:31,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:31,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845091617] [2021-02-24 00:30:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:32,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:32,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:32,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:32,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:32,069 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-02-24 00:30:32,072 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size 38 [2021-02-24 00:30:32,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:32,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:32,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:32,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:32,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:32,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845091617] [2021-02-24 00:30:32,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:30:32,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:30:32,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872273276] [2021-02-24 00:30:32,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:30:32,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:32,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:30:32,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:30:32,177 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 4 states. [2021-02-24 00:30:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:32,379 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-02-24 00:30:32,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:30:32,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2021-02-24 00:30:32,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:32,381 INFO L225 Difference]: With dead ends: 100 [2021-02-24 00:30:32,382 INFO L226 Difference]: Without dead ends: 69 [2021-02-24 00:30:32,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-02-24 00:30:32,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2021-02-24 00:30:32,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-24 00:30:32,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-02-24 00:30:32,403 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 31 [2021-02-24 00:30:32,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:32,403 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-02-24 00:30:32,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:30:32,404 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-02-24 00:30:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 00:30:32,405 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:32,405 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] [2021-02-24 00:30:32,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:30:32,406 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:32,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:32,407 INFO L82 PathProgramCache]: Analyzing trace with hash 619271948, now seen corresponding path program 1 times [2021-02-24 00:30:32,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:32,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326805811] [2021-02-24 00:30:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:32,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:32,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:32,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:32,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:32,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:32,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:32,549 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:30:32,551 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:30:32,579 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:30:32,580 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:30:32,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:32,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:32,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:32,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:32,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:32,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326805811] [2021-02-24 00:30:32,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:32,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-02-24 00:30:32,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629125949] [2021-02-24 00:30:32,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:30:32,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:32,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:30:32,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:30:32,631 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2021-02-24 00:30:33,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:33,002 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2021-02-24 00:30:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:30:33,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2021-02-24 00:30:33,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:33,005 INFO L225 Difference]: With dead ends: 105 [2021-02-24 00:30:33,005 INFO L226 Difference]: Without dead ends: 73 [2021-02-24 00:30:33,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:30:33,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-24 00:30:33,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2021-02-24 00:30:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-02-24 00:30:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-02-24 00:30:33,024 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 35 [2021-02-24 00:30:33,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:33,025 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-02-24 00:30:33,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:30:33,025 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-02-24 00:30:33,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-24 00:30:33,026 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:33,027 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:33,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:30:33,027 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:33,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:33,028 INFO L82 PathProgramCache]: Analyzing trace with hash 571317961, now seen corresponding path program 2 times [2021-02-24 00:30:33,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:33,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340406826] [2021-02-24 00:30:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:33,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:33,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:33,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:33,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:33,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:33,105 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:30:33,106 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:30:33,129 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:30:33,130 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:30:33,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:33,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:33,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:33,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340406826] [2021-02-24 00:30:33,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:33,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:30:33,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156440457] [2021-02-24 00:30:33,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:30:33,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:33,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:30:33,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:30:33,174 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 8 states. [2021-02-24 00:30:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:33,610 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2021-02-24 00:30:33,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:30:33,611 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2021-02-24 00:30:33,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:33,617 INFO L225 Difference]: With dead ends: 113 [2021-02-24 00:30:33,618 INFO L226 Difference]: Without dead ends: 77 [2021-02-24 00:30:33,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:30:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-24 00:30:33,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2021-02-24 00:30:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-24 00:30:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2021-02-24 00:30:33,646 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 39 [2021-02-24 00:30:33,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:33,646 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2021-02-24 00:30:33,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:30:33,647 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2021-02-24 00:30:33,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-24 00:30:33,648 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:33,648 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:33,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:30:33,648 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:33,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:33,649 INFO L82 PathProgramCache]: Analyzing trace with hash -534921210, now seen corresponding path program 3 times [2021-02-24 00:30:33,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:33,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431395897] [2021-02-24 00:30:33,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:33,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:33,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:33,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:33,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:33,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:33,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:33,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:33,750 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:30:33,754 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:30:33,790 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:30:33,791 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:30:33,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:33,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:33,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:33,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:33,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431395897] [2021-02-24 00:30:33,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:33,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:30:33,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161124726] [2021-02-24 00:30:33,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:30:33,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:33,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:30:33,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:30:33,836 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 10 states. [2021-02-24 00:30:34,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:34,365 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2021-02-24 00:30:34,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 00:30:34,366 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2021-02-24 00:30:34,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:34,367 INFO L225 Difference]: With dead ends: 121 [2021-02-24 00:30:34,367 INFO L226 Difference]: Without dead ends: 81 [2021-02-24 00:30:34,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:30:34,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-24 00:30:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2021-02-24 00:30:34,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-24 00:30:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-02-24 00:30:34,384 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 43 [2021-02-24 00:30:34,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:34,385 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-02-24 00:30:34,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:30:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-02-24 00:30:34,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 00:30:34,386 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:34,386 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:34,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:30:34,387 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:34,387 INFO L82 PathProgramCache]: Analyzing trace with hash -359597373, now seen corresponding path program 4 times [2021-02-24 00:30:34,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:34,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257309512] [2021-02-24 00:30:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:34,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:34,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:34,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:34,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:34,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:34,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:34,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:34,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:34,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:34,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:34,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:34,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:34,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:34,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:34,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:34,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:34,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:34,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:34,499 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:30:34,500 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:30:34,525 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:30:34,525 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:30:34,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:34,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:34,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:34,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:34,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:34,564 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:34,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257309512] [2021-02-24 00:30:34,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:34,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:30:34,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81592042] [2021-02-24 00:30:34,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:30:34,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:34,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:30:34,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:30:34,566 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 12 states. [2021-02-24 00:30:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:35,289 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-02-24 00:30:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 00:30:35,290 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2021-02-24 00:30:35,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:35,291 INFO L225 Difference]: With dead ends: 129 [2021-02-24 00:30:35,291 INFO L226 Difference]: Without dead ends: 85 [2021-02-24 00:30:35,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2021-02-24 00:30:35,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-02-24 00:30:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2021-02-24 00:30:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-24 00:30:35,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-02-24 00:30:35,326 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 47 [2021-02-24 00:30:35,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:35,326 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-02-24 00:30:35,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:30:35,326 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-02-24 00:30:35,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-24 00:30:35,327 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:35,328 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:35,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:30:35,328 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:35,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:35,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1086419200, now seen corresponding path program 5 times [2021-02-24 00:30:35,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:35,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156117077] [2021-02-24 00:30:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:35,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:35,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:35,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:35,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:35,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:35,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:35,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:35,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:35,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:35,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:35,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:35,475 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:30:35,476 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:30:35,505 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:30:35,506 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:30:35,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:35,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:35,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:35,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:35,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156117077] [2021-02-24 00:30:35,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:35,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-02-24 00:30:35,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726637140] [2021-02-24 00:30:35,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 00:30:35,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:35,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 00:30:35,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-02-24 00:30:35,553 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 14 states. [2021-02-24 00:30:36,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:36,479 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2021-02-24 00:30:36,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 00:30:36,480 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2021-02-24 00:30:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:36,485 INFO L225 Difference]: With dead ends: 137 [2021-02-24 00:30:36,485 INFO L226 Difference]: Without dead ends: 89 [2021-02-24 00:30:36,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2021-02-24 00:30:36,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-24 00:30:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 70. [2021-02-24 00:30:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-02-24 00:30:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-02-24 00:30:36,532 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 51 [2021-02-24 00:30:36,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:36,533 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-02-24 00:30:36,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 00:30:36,533 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-02-24 00:30:36,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-24 00:30:36,536 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:36,537 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:36,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 00:30:36,537 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:36,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:36,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1638024003, now seen corresponding path program 6 times [2021-02-24 00:30:36,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:36,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153267491] [2021-02-24 00:30:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:36,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:36,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:36,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:36,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:36,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:36,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:36,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:36,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:36,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:36,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:36,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:36,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:36,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:36,752 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:30:36,754 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:30:36,789 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:30:36,790 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:30:36,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:36,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:36,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:36,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153267491] [2021-02-24 00:30:36,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:36,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-02-24 00:30:36,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260442173] [2021-02-24 00:30:36,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 00:30:36,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:36,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 00:30:36,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:30:36,853 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 16 states. [2021-02-24 00:30:37,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:37,908 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2021-02-24 00:30:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-24 00:30:37,908 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2021-02-24 00:30:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:37,909 INFO L225 Difference]: With dead ends: 145 [2021-02-24 00:30:37,909 INFO L226 Difference]: Without dead ends: 93 [2021-02-24 00:30:37,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=1020, Unknown=0, NotChecked=0, Total=1190 [2021-02-24 00:30:37,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-02-24 00:30:37,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2021-02-24 00:30:37,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-24 00:30:37,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2021-02-24 00:30:37,927 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 55 [2021-02-24 00:30:37,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:37,927 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2021-02-24 00:30:37,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 00:30:37,927 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2021-02-24 00:30:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-24 00:30:37,928 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:37,928 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:37,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 00:30:37,929 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:37,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:37,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1518715898, now seen corresponding path program 7 times [2021-02-24 00:30:37,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:37,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473716400] [2021-02-24 00:30:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:37,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:37,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:37,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:37,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:37,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:37,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:37,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:37,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:37,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:37,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:37,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:37,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:38,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:38,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:38,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:38,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:38,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:38,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:38,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:38,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:38,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:38,151 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:30:38,152 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:30:38,185 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:30:38,186 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:30:38,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:38,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:38,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:38,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473716400] [2021-02-24 00:30:38,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:38,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-24 00:30:38,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625431414] [2021-02-24 00:30:38,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 00:30:38,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:38,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 00:30:38,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:30:38,239 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 18 states. [2021-02-24 00:30:39,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:39,511 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2021-02-24 00:30:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-24 00:30:39,511 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2021-02-24 00:30:39,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:39,512 INFO L225 Difference]: With dead ends: 153 [2021-02-24 00:30:39,512 INFO L226 Difference]: Without dead ends: 97 [2021-02-24 00:30:39,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=197, Invalid=1363, Unknown=0, NotChecked=0, Total=1560 [2021-02-24 00:30:39,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-02-24 00:30:39,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 78. [2021-02-24 00:30:39,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 00:30:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-02-24 00:30:39,532 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 59 [2021-02-24 00:30:39,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:39,533 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-02-24 00:30:39,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 00:30:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-02-24 00:30:39,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-24 00:30:39,534 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:39,534 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:39,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 00:30:39,534 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:39,535 INFO L82 PathProgramCache]: Analyzing trace with hash 682484919, now seen corresponding path program 8 times [2021-02-24 00:30:39,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:39,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281732354] [2021-02-24 00:30:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:39,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:39,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:39,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:39,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,777 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:30:39,778 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:30:39,820 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:30:39,821 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:30:39,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:39,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:39,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281732354] [2021-02-24 00:30:39,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:39,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-02-24 00:30:39,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6239016] [2021-02-24 00:30:39,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-24 00:30:39,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:39,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-24 00:30:39,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:30:39,895 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 20 states. [2021-02-24 00:30:41,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:41,499 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2021-02-24 00:30:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-24 00:30:41,500 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 63 [2021-02-24 00:30:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:41,501 INFO L225 Difference]: With dead ends: 161 [2021-02-24 00:30:41,502 INFO L226 Difference]: Without dead ends: 101 [2021-02-24 00:30:41,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=224, Invalid=1756, Unknown=0, NotChecked=0, Total=1980 [2021-02-24 00:30:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-02-24 00:30:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 82. [2021-02-24 00:30:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-24 00:30:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2021-02-24 00:30:41,521 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 63 [2021-02-24 00:30:41,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:41,521 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2021-02-24 00:30:41,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-24 00:30:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2021-02-24 00:30:41,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-24 00:30:41,522 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:41,523 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:41,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 00:30:41,523 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:41,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:41,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1882021620, now seen corresponding path program 9 times [2021-02-24 00:30:41,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:41,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354575513] [2021-02-24 00:30:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:41,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:41,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:41,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:41,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,826 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:30:41,826 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:30:41,871 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:30:41,871 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:30:41,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:41,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:41,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:41,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354575513] [2021-02-24 00:30:41,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:41,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-02-24 00:30:41,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690280181] [2021-02-24 00:30:41,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-24 00:30:41,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:41,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-24 00:30:41,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-02-24 00:30:41,935 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 22 states. [2021-02-24 00:30:43,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:43,839 INFO L93 Difference]: Finished difference Result 169 states and 181 transitions. [2021-02-24 00:30:43,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-24 00:30:43,839 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 67 [2021-02-24 00:30:43,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:43,840 INFO L225 Difference]: With dead ends: 169 [2021-02-24 00:30:43,841 INFO L226 Difference]: Without dead ends: 105 [2021-02-24 00:30:43,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=251, Invalid=2199, Unknown=0, NotChecked=0, Total=2450 [2021-02-24 00:30:43,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-02-24 00:30:43,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2021-02-24 00:30:43,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-24 00:30:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2021-02-24 00:30:43,861 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 67 [2021-02-24 00:30:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:43,861 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2021-02-24 00:30:43,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-24 00:30:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2021-02-24 00:30:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-24 00:30:43,862 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:43,862 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:43,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 00:30:43,863 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:43,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:43,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1698991439, now seen corresponding path program 10 times [2021-02-24 00:30:43,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:43,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377099755] [2021-02-24 00:30:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:43,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:43,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:43,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:43,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:43,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:43,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:43,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:43,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:43,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:43,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:43,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:44,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:44,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:44,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:44,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:44,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:44,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:44,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:44,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:44,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:44,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:44,223 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:30:44,225 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:30:44,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:30:44,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:30:44,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:44,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:44,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:44,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377099755] [2021-02-24 00:30:44,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:44,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-02-24 00:30:44,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551610310] [2021-02-24 00:30:44,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-24 00:30:44,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:44,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-24 00:30:44,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2021-02-24 00:30:44,419 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 26 states. [2021-02-24 00:30:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:46,917 INFO L93 Difference]: Finished difference Result 169 states and 181 transitions. [2021-02-24 00:30:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-24 00:30:46,918 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 71 [2021-02-24 00:30:46,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:46,918 INFO L225 Difference]: With dead ends: 169 [2021-02-24 00:30:46,919 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:30:46,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=223, Invalid=3199, Unknown=0, NotChecked=0, Total=3422 [2021-02-24 00:30:46,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:30:46,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:30:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:30:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:30:46,922 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2021-02-24 00:30:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:46,922 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:30:46,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-24 00:30:46,922 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:30:46,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:30:46,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 00:30:46,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:30:47,382 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 92 [2021-02-24 00:30:48,349 WARN L202 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 18 [2021-02-24 00:30:48,666 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2021-02-24 00:30:48,935 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-02-24 00:30:49,132 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2021-02-24 00:30:49,629 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 00:30:49,630 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 00:30:49,630 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 00:30:49,630 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 00:30:49,630 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 00:30:49,631 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:30:49,631 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 00:30:49,631 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:30:49,631 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 00:30:49,631 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 00:30:49,631 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 00:30:49,631 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 00:30:49,631 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:30:49,631 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:30:49,632 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:30:49,632 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:30:49,632 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:30:49,632 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 12 27) the Hoare annotation is: true [2021-02-24 00:30:49,632 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,632 INFO L185 CegarLoopUtils]: At program point L23-3(line 23) the Hoare annotation is: (or (and (<= 3 main_~v~0) (<= main_~v~0 3)) (= main_~v~0 0) (and (<= main_~v~0 9) (<= 9 main_~v~0)) (and (<= main_~v~0 7) (<= 7 main_~v~0)) (and (<= main_~v~0 8) (<= 8 main_~v~0)) (and (<= 2 main_~v~0) (<= main_~v~0 2)) (and (<= main_~v~0 1) (<= 1 main_~v~0)) (and (<= 4 main_~v~0) (<= main_~v~0 4)) (and (<= main_~v~0 5) (<= 5 main_~v~0)) (and (<= 6 main_~v~0) (<= main_~v~0 6))) [2021-02-24 00:30:49,632 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= main_~v~0 0) [2021-02-24 00:30:49,632 INFO L185 CegarLoopUtils]: At program point L23-4(line 23) the Hoare annotation is: (or (and (<= main_~v~0 7) (<= |main_#t~post11| 7) (<= 7 |main_#t~post11|) (<= 7 main_~v~0)) (and (<= main_~v~0 8) (<= 8 main_~v~0) (<= 8 |main_#t~post11|) (<= |main_#t~post11| 8)) (and (<= main_~v~0 5) (<= 5 |main_#t~post11|) (<= 5 main_~v~0) (<= |main_#t~post11| 5)) (and (= main_~v~0 0) (= 0 |main_#t~post11|)) (and (<= 2 |main_#t~post11|) (<= |main_#t~post11| 2) (<= 2 main_~v~0) (<= main_~v~0 2)) (and (<= 4 |main_#t~post11|) (<= |main_#t~post11| 4) (<= 4 main_~v~0) (<= main_~v~0 4)) (and (<= 9 |main_#t~post11|) (<= main_~v~0 9) (<= |main_#t~post11| 9) (<= 9 main_~v~0)) (and (<= |main_#t~post11| 1) (<= main_~v~0 1) (<= 1 main_~v~0) (<= 1 |main_#t~post11|)) (and (<= 6 main_~v~0) (<= 6 |main_#t~post11|) (<= |main_#t~post11| 6) (<= main_~v~0 6)) (and (<= 3 main_~v~0) (<= 3 |main_#t~post11|) (<= |main_#t~post11| 3) (<= main_~v~0 3))) [2021-02-24 00:30:49,633 INFO L185 CegarLoopUtils]: At program point L23-5(line 23) the Hoare annotation is: (or (and (<= 8 |main_#t~post11|) (<= main_~v~0 9) (<= |main_#t~post11| 8) (<= 9 main_~v~0)) (and (<= 6 main_~v~0) (<= 5 |main_#t~post11|) (<= |main_#t~post11| 5) (<= main_~v~0 6)) (and (<= 4 |main_#t~post11|) (<= main_~v~0 5) (<= |main_#t~post11| 4) (<= 5 main_~v~0)) (and (<= 2 |main_#t~post11|) (<= |main_#t~post11| 2) (<= 3 main_~v~0) (<= main_~v~0 3)) (and (<= main_~v~0 7) (<= 6 |main_#t~post11|) (<= |main_#t~post11| 6) (<= 7 main_~v~0)) (and (<= main_~v~0 1) (= 0 |main_#t~post11|) (<= 1 main_~v~0)) (and (<= |main_#t~post11| 1) (<= 2 main_~v~0) (<= main_~v~0 2) (<= 1 |main_#t~post11|)) (and (<= 9 |main_#t~post11|) (<= 10 main_~v~0) (<= (div main_~v~0 4) 2) (<= |main_#t~post11| 9)) (and (<= 3 |main_#t~post11|) (<= 4 main_~v~0) (<= |main_#t~post11| 3) (<= main_~v~0 4)) (and (<= main_~v~0 8) (<= 8 main_~v~0) (<= |main_#t~post11| 7) (<= 7 |main_#t~post11|))) [2021-02-24 00:30:49,633 INFO L185 CegarLoopUtils]: At program point L23-6(line 23) the Hoare annotation is: (or (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2)) (and (< 0 (+ (div main_~v~0 4294967296) 1)) (<= main_~v~0 9))) [2021-02-24 00:30:49,633 INFO L185 CegarLoopUtils]: At program point L23-7(line 23) the Hoare annotation is: (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2)) [2021-02-24 00:30:49,633 INFO L185 CegarLoopUtils]: At program point L19-3(lines 19 25) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,633 INFO L192 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: true [2021-02-24 00:30:49,633 INFO L185 CegarLoopUtils]: At program point L19-4(line 19) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,633 INFO L185 CegarLoopUtils]: At program point L19-5(line 19) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,633 INFO L185 CegarLoopUtils]: At program point L19-6(lines 19 25) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,633 INFO L192 CegarLoopUtils]: At program point L19-7(lines 19 25) the Hoare annotation is: true [2021-02-24 00:30:49,634 INFO L185 CegarLoopUtils]: At program point L24(lines 22 25) the Hoare annotation is: (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2)) [2021-02-24 00:30:49,634 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,634 INFO L185 CegarLoopUtils]: At program point L20-3(lines 20 25) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,634 INFO L192 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-02-24 00:30:49,634 INFO L185 CegarLoopUtils]: At program point L20-4(line 20) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,634 INFO L185 CegarLoopUtils]: At program point L20-5(line 20) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,634 INFO L185 CegarLoopUtils]: At program point L20-6(lines 20 25) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,634 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,635 INFO L185 CegarLoopUtils]: At program point L21-3(lines 21 25) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,635 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-24 00:30:49,635 INFO L185 CegarLoopUtils]: At program point L21-4(line 21) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,635 INFO L185 CegarLoopUtils]: At program point L21-5(line 21) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,635 INFO L185 CegarLoopUtils]: At program point L21-6(lines 21 25) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,635 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 12 27) the Hoare annotation is: true [2021-02-24 00:30:49,635 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 12 27) the Hoare annotation is: true [2021-02-24 00:30:49,635 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,635 INFO L185 CegarLoopUtils]: At program point L22-3(line 22) the Hoare annotation is: (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2)) [2021-02-24 00:30:49,636 INFO L192 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: true [2021-02-24 00:30:49,636 INFO L185 CegarLoopUtils]: At program point L22-4(line 22) the Hoare annotation is: (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2)) [2021-02-24 00:30:49,636 INFO L185 CegarLoopUtils]: At program point L22-5(lines 22 25) the Hoare annotation is: (or (= main_~v~0 0) (and (<= 10 main_~v~0) (<= (div main_~v~0 4) 2))) [2021-02-24 00:30:49,636 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-24 00:30:49,636 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: (or (<= (+ __VERIFIER_assert_~cond 2) 0) (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 2) 0))) (<= 2 __VERIFIER_assert_~cond)) [2021-02-24 00:30:49,636 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 2) 0))) [2021-02-24 00:30:49,636 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (<= (+ __VERIFIER_assert_~cond 2) 0) (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 2) 0))) (<= 2 __VERIFIER_assert_~cond)) [2021-02-24 00:30:49,637 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 2) 0))) [2021-02-24 00:30:49,637 INFO L185 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: (or (<= (+ __VERIFIER_assert_~cond 2) 0) (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 2) 0))) (<= 2 __VERIFIER_assert_~cond)) [2021-02-24 00:30:49,637 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 2) 0))) [2021-02-24 00:30:49,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:30:49 BoogieIcfgContainer [2021-02-24 00:30:49,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:30:49,658 INFO L168 Benchmark]: Toolchain (without parser) took 19157.09 ms. Allocated memory was 154.1 MB in the beginning and 324.0 MB in the end (delta: 169.9 MB). Free memory was 113.3 MB in the beginning and 193.3 MB in the end (delta: -80.0 MB). Peak memory consumption was 171.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:30:49,659 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:30:49,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.72 ms. Allocated memory is still 154.1 MB. Free memory was 138.3 MB in the beginning and 129.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:30:49,659 INFO L168 Benchmark]: Boogie Preprocessor took 35.17 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 127.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:30:49,660 INFO L168 Benchmark]: RCFGBuilder took 419.06 ms. Allocated memory is still 154.1 MB. Free memory was 127.3 MB in the beginning and 123.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 00:30:49,660 INFO L168 Benchmark]: TraceAbstraction took 18392.09 ms. Allocated memory was 154.1 MB in the beginning and 324.0 MB in the end (delta: 169.9 MB). Free memory was 122.9 MB in the beginning and 193.3 MB in the end (delta: -70.4 MB). Peak memory consumption was 181.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:30:49,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 252.72 ms. Allocated memory is still 154.1 MB. Free memory was 138.3 MB in the beginning and 129.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.17 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 127.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 419.06 ms. Allocated memory is still 154.1 MB. Free memory was 127.3 MB in the beginning and 123.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18392.09 ms. Allocated memory was 154.1 MB in the beginning and 324.0 MB in the end (delta: 169.9 MB). Free memory was 122.9 MB in the beginning and 193.3 MB in the end (delta: -70.4 MB). Peak memory consumption was 181.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (10 <= v && v / 4 <= 2) || (0 < v / 4294967296 + 1 && v <= 9) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: v == 0 || (10 <= v && v / 4 <= 2) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: v == 0 || (10 <= v && v / 4 <= 2) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: v == 0 || (10 <= v && v / 4 <= 2) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: v == 0 || (10 <= v && v / 4 <= 2) - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (cond + 2 <= 0 || (!(2 <= \old(cond)) && !(\old(cond) + 2 <= 0))) || 2 <= cond - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.5s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 657 SDtfs, 1340 SDslu, 1466 SDs, 0 SdLazy, 7673 SolverSat, 206 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 371 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1876 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 190 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 55 LocationsWithAnnotation, 139 PreInvPairs, 225 NumberOfFragments, 749 HoareAnnotationTreeSize, 139 FomulaSimplifications, 2578546 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 55 FomulaSimplificationsInter, 3015 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 592 NumberOfCodeBlocks, 592 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 126620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 0/715 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...