/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:27:22,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:27:22,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:27:22,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:27:22,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:27:22,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:27:22,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:27:22,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:27:22,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:27:22,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:27:22,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:27:22,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:27:22,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:27:22,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:27:22,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:27:22,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:27:22,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:27:22,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:27:22,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:27:22,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:27:22,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:27:22,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:27:22,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:27:22,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:27:22,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:27:22,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:27:22,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:27:22,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:27:22,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:27:22,621 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:27:22,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:27:22,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:27:22,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:27:22,624 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:27:22,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:27:22,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:27:22,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:27:22,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:27:22,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:27:22,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:27:22,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:27:22,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:27:22,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:27:22,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:27:22,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:27:22,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:27:22,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:27:22,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:27:22,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:27:22,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:27:22,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:27:22,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:27:22,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:27:22,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:27:22,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:27:23,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:27:23,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:27:23,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:27:23,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:27:23,095 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:27:23,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound20.c [2020-12-22 05:27:23,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ad8a5f1c/f538deaec3ad481398be50ac286aa85a/FLAG2db9344a5 [2020-12-22 05:27:23,766 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:27:23,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound20.c [2020-12-22 05:27:23,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ad8a5f1c/f538deaec3ad481398be50ac286aa85a/FLAG2db9344a5 [2020-12-22 05:27:24,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ad8a5f1c/f538deaec3ad481398be50ac286aa85a [2020-12-22 05:27:24,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:27:24,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:27:24,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:27:24,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:27:24,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:27:24,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:27:24" (1/1) ... [2020-12-22 05:27:24,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6d0eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24, skipping insertion in model container [2020-12-22 05:27:24,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:27:24" (1/1) ... [2020-12-22 05:27:24,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:27:24,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:27:24,425 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound20.c[538,551] [2020-12-22 05:27:24,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:27:24,473 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:27:24,491 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound20.c[538,551] [2020-12-22 05:27:24,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:27:24,533 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:27:24,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24 WrapperNode [2020-12-22 05:27:24,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:27:24,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:27:24,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:27:24,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:27:24,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24" (1/1) ... [2020-12-22 05:27:24,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24" (1/1) ... [2020-12-22 05:27:24,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:27:24,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:27:24,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:27:24,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:27:24,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24" (1/1) ... [2020-12-22 05:27:24,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24" (1/1) ... [2020-12-22 05:27:24,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24" (1/1) ... [2020-12-22 05:27:24,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24" (1/1) ... [2020-12-22 05:27:24,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24" (1/1) ... [2020-12-22 05:27:24,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24" (1/1) ... [2020-12-22 05:27:24,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24" (1/1) ... [2020-12-22 05:27:24,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:27:24,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:27:24,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:27:24,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:27:24,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24" (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 [2020-12-22 05:27:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:27:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:27:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:27:24,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:27:25,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:27:25,348 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-22 05:27:25,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:27:25 BoogieIcfgContainer [2020-12-22 05:27:25,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:27:25,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:27:25,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:27:25,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:27:25,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:27:24" (1/3) ... [2020-12-22 05:27:25,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1e377c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:27:25, skipping insertion in model container [2020-12-22 05:27:25,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:24" (2/3) ... [2020-12-22 05:27:25,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1e377c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:27:25, skipping insertion in model container [2020-12-22 05:27:25,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:27:25" (3/3) ... [2020-12-22 05:27:25,365 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound20.c [2020-12-22 05:27:25,371 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:27:25,376 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:27:25,393 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:27:25,420 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:27:25,420 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:27:25,421 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:27:25,421 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:27:25,421 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:27:25,421 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:27:25,421 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:27:25,421 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:27:25,438 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-22 05:27:25,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:27:25,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:25,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:25,444 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:25,451 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-22 05:27:25,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:25,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91575185] [2020-12-22 05:27:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:25,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91575185] [2020-12-22 05:27:25,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:25,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:27:25,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191209663] [2020-12-22 05:27:25,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:27:25,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:25,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:27:25,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:27:25,645 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-22 05:27:25,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:25,668 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-22 05:27:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:27:25,670 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 05:27:25,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:25,681 INFO L225 Difference]: With dead ends: 79 [2020-12-22 05:27:25,681 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:27:25,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:27:25,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:27:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:27:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:27:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 05:27:25,724 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-22 05:27:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:25,725 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 05:27:25,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:27:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 05:27:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:27:25,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:25,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:25,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:27:25,727 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:25,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:25,728 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-22 05:27:25,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:25,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859105042] [2020-12-22 05:27:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:25,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859105042] [2020-12-22 05:27:25,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:25,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:27:25,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823220679] [2020-12-22 05:27:25,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:27:25,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:25,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:27:25,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:27:25,828 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-22 05:27:25,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:25,925 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-22 05:27:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:27:25,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 05:27:25,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:25,928 INFO L225 Difference]: With dead ends: 61 [2020-12-22 05:27:25,928 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 05:27:25,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:27:25,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 05:27:25,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-22 05:27:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:27:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:27:25,938 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-22 05:27:25,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:25,939 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:27:25,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:27:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:27:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:27:25,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:25,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:25,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:27:25,941 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:25,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:25,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-22 05:27:25,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:25,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204695508] [2020-12-22 05:27:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:25,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204695508] [2020-12-22 05:27:25,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:25,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:27:25,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567534606] [2020-12-22 05:27:25,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:27:25,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:25,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:27:25,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:27:25,994 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-22 05:27:26,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:26,029 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-22 05:27:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:27:26,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 05:27:26,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:26,033 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:27:26,033 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:27:26,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:27:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:27:26,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:27:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:27:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 05:27:26,049 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-22 05:27:26,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:26,049 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 05:27:26,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:27:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 05:27:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:27:26,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:26,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:26,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:27:26,050 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:26,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:26,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-22 05:27:26,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:26,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628908618] [2020-12-22 05:27:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:26,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628908618] [2020-12-22 05:27:26,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:26,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:27:26,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874958417] [2020-12-22 05:27:26,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:27:26,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:26,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:27:26,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:27:26,185 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-22 05:27:26,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:26,279 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-22 05:27:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:27:26,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 05:27:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:26,281 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:27:26,281 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:27:26,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:27:26,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:27:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-22 05:27:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:27:26,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:27:26,291 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-22 05:27:26,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:26,292 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:27:26,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:27:26,292 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:27:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 05:27:26,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:26,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:26,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:27:26,294 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:26,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:26,294 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-22 05:27:26,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:26,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830181117] [2020-12-22 05:27:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:26,313 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:26,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243804404] [2020-12-22 05:27:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:26,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:27:26,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:26,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830181117] [2020-12-22 05:27:26,564 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:26,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243804404] [2020-12-22 05:27:26,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:26,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:27:26,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424733553] [2020-12-22 05:27:26,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:27:26,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:26,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:27:26,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:27:26,569 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-22 05:27:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:26,817 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-22 05:27:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:27:26,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 05:27:26,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:26,822 INFO L225 Difference]: With dead ends: 81 [2020-12-22 05:27:26,823 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 05:27:26,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:27:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 05:27:26,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-22 05:27:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 05:27:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-22 05:27:26,847 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-22 05:27:26,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:26,847 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-22 05:27:26,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:27:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-22 05:27:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:27:26,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:26,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:27,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:27,067 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:27,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:27,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-22 05:27:27,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:27,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856666705] [2020-12-22 05:27:27,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:27,088 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:27,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805632593] [2020-12-22 05:27:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:27,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:27:27,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:27,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856666705] [2020-12-22 05:27:27,333 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:27,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805632593] [2020-12-22 05:27:27,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:27,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:27:27,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354333889] [2020-12-22 05:27:27,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:27:27,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:27,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:27:27,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:27:27,339 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-22 05:27:27,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:27,745 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-22 05:27:27,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:27:27,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 05:27:27,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:27,750 INFO L225 Difference]: With dead ends: 53 [2020-12-22 05:27:27,750 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 05:27:27,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:27:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 05:27:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-22 05:27:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 05:27:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-22 05:27:27,773 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-22 05:27:27,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:27,774 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-22 05:27:27,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:27:27,774 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-22 05:27:27,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:27:27,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:27,775 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:27,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:27,993 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:27,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-22 05:27:27,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:27,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105534134] [2020-12-22 05:27:27,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:28,009 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:28,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536499411] [2020-12-22 05:27:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:28,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:27:28,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:28,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105534134] [2020-12-22 05:27:28,165 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:28,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536499411] [2020-12-22 05:27:28,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:28,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:27:28,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543204233] [2020-12-22 05:27:28,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:27:28,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:28,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:27:28,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:27:28,170 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-22 05:27:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:28,211 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-22 05:27:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:27:28,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 05:27:28,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:28,213 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:27:28,213 INFO L226 Difference]: Without dead ends: 43 [2020-12-22 05:27:28,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:27:28,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-22 05:27:28,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-22 05:27:28,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 05:27:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-22 05:27:28,237 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-22 05:27:28,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:28,237 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-22 05:27:28,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:27:28,237 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-22 05:27:28,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:27:28,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:28,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:28,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:28,453 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:28,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:28,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-22 05:27:28,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:28,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866570524] [2020-12-22 05:27:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:28,481 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:28,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106869751] [2020-12-22 05:27:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:28,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 05:27:28,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:28,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866570524] [2020-12-22 05:27:28,732 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:28,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106869751] [2020-12-22 05:27:28,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:28,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:27:28,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595402969] [2020-12-22 05:27:28,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:27:28,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:28,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:27:28,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:27:28,735 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 9 states. [2020-12-22 05:27:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:29,113 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2020-12-22 05:27:29,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:27:29,114 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-12-22 05:27:29,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:29,115 INFO L225 Difference]: With dead ends: 106 [2020-12-22 05:27:29,115 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 05:27:29,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:27:29,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 05:27:29,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2020-12-22 05:27:29,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 05:27:29,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-12-22 05:27:29,125 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 20 [2020-12-22 05:27:29,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:29,125 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-12-22 05:27:29,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:27:29,126 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-12-22 05:27:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 05:27:29,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:29,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:29,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:29,341 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:29,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-22 05:27:29,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:29,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348957134] [2020-12-22 05:27:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:29,358 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:29,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352005812] [2020-12-22 05:27:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:29,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:27:29,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:29,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348957134] [2020-12-22 05:27:29,711 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:29,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352005812] [2020-12-22 05:27:29,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:29,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:27:29,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349325411] [2020-12-22 05:27:29,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:27:29,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:29,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:27:29,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:27:29,714 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 8 states. [2020-12-22 05:27:30,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:30,362 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-12-22 05:27:30,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:27:30,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-12-22 05:27:30,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:30,364 INFO L225 Difference]: With dead ends: 74 [2020-12-22 05:27:30,364 INFO L226 Difference]: Without dead ends: 62 [2020-12-22 05:27:30,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:27:30,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-22 05:27:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-12-22 05:27:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 05:27:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-12-22 05:27:30,373 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 24 [2020-12-22 05:27:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:30,373 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-12-22 05:27:30,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:27:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-12-22 05:27:30,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:27:30,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:30,374 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:30,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:30,589 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:30,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1637703955, now seen corresponding path program 2 times [2020-12-22 05:27:30,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:30,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233827740] [2020-12-22 05:27:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:30,603 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:30,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596710420] [2020-12-22 05:27:30,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:30,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:27:30,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:27:30,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 05:27:30,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 05:27:30,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233827740] [2020-12-22 05:27:30,731 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:30,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596710420] [2020-12-22 05:27:30,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:30,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:27:30,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118687902] [2020-12-22 05:27:30,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:27:30,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:30,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:27:30,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:27:30,733 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 5 states. [2020-12-22 05:27:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:30,772 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-12-22 05:27:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:27:30,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 05:27:30,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:30,773 INFO L225 Difference]: With dead ends: 87 [2020-12-22 05:27:30,773 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 05:27:30,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:27:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 05:27:30,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-12-22 05:27:30,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 05:27:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-12-22 05:27:30,781 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 26 [2020-12-22 05:27:30,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:30,781 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-12-22 05:27:30,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:27:30,782 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-12-22 05:27:30,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:27:30,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:30,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:30,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:30,997 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:30,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-22 05:27:30,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:30,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705188412] [2020-12-22 05:27:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:31,010 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:31,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529057966] [2020-12-22 05:27:31,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:31,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:27:31,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:31,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705188412] [2020-12-22 05:27:31,116 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:31,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529057966] [2020-12-22 05:27:31,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:31,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:27:31,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118699085] [2020-12-22 05:27:31,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:27:31,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:31,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:27:31,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:27:31,119 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 6 states. [2020-12-22 05:27:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:31,142 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-12-22 05:27:31,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:27:31,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-22 05:27:31,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:31,143 INFO L225 Difference]: With dead ends: 65 [2020-12-22 05:27:31,143 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 05:27:31,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:27:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 05:27:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-12-22 05:27:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 05:27:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-12-22 05:27:31,152 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 27 [2020-12-22 05:27:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:31,153 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-12-22 05:27:31,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:27:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-12-22 05:27:31,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:27:31,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:31,155 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:31,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:31,370 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:31,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:31,371 INFO L82 PathProgramCache]: Analyzing trace with hash -770811653, now seen corresponding path program 1 times [2020-12-22 05:27:31,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:31,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934600431] [2020-12-22 05:27:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:31,389 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:31,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226266289] [2020-12-22 05:27:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:31,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:27:31,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:31,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934600431] [2020-12-22 05:27:31,490 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:31,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226266289] [2020-12-22 05:27:31,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:31,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:27:31,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244093751] [2020-12-22 05:27:31,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:27:31,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:31,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:27:31,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:27:31,497 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2020-12-22 05:27:31,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:31,536 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-12-22 05:27:31,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:27:31,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-22 05:27:31,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:31,537 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:27:31,537 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 05:27:31,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:27:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 05:27:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-22 05:27:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 05:27:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-12-22 05:27:31,544 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 27 [2020-12-22 05:27:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:31,544 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-12-22 05:27:31,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:27:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-12-22 05:27:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 05:27:31,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:31,545 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:31,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:27:31,760 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:31,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:31,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2020-12-22 05:27:31,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:31,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446521480] [2020-12-22 05:27:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:31,781 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:31,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908718552] [2020-12-22 05:27:31,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:31,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:27:31,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:27:31,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-22 05:27:31,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:32,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446521480] [2020-12-22 05:27:32,307 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:32,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908718552] [2020-12-22 05:27:32,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:32,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:27:32,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609846329] [2020-12-22 05:27:32,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:27:32,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:32,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:27:32,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:27:32,315 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 12 states. [2020-12-22 05:27:37,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:37,771 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2020-12-22 05:27:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:27:37,771 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-12-22 05:27:37,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:37,772 INFO L225 Difference]: With dead ends: 119 [2020-12-22 05:27:37,773 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 05:27:37,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-12-22 05:27:37,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 05:27:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 79. [2020-12-22 05:27:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-22 05:27:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2020-12-22 05:27:37,784 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 28 [2020-12-22 05:27:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:37,784 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2020-12-22 05:27:37,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:27:37,785 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2020-12-22 05:27:37,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:27:37,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:37,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:37,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:38,000 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:38,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:38,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2020-12-22 05:27:38,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:38,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834150576] [2020-12-22 05:27:38,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:38,011 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:38,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982539628] [2020-12-22 05:27:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:38,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:27:38,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:38,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:38,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834150576] [2020-12-22 05:27:38,436 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:38,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982539628] [2020-12-22 05:27:38,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:38,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:27:38,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125471594] [2020-12-22 05:27:38,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:27:38,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:38,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:27:38,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:27:38,441 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 10 states. [2020-12-22 05:27:39,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:39,170 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-12-22 05:27:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:27:39,171 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-22 05:27:39,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:39,172 INFO L225 Difference]: With dead ends: 101 [2020-12-22 05:27:39,172 INFO L226 Difference]: Without dead ends: 99 [2020-12-22 05:27:39,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:27:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-22 05:27:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2020-12-22 05:27:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 05:27:39,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2020-12-22 05:27:39,185 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 31 [2020-12-22 05:27:39,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:39,185 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2020-12-22 05:27:39,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:27:39,185 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2020-12-22 05:27:39,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:27:39,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:39,186 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:39,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:39,394 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:39,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:39,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1414538084, now seen corresponding path program 1 times [2020-12-22 05:27:39,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:39,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377495761] [2020-12-22 05:27:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:39,406 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:39,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141350707] [2020-12-22 05:27:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:39,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:27:39,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:39,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377495761] [2020-12-22 05:27:39,532 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:39,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141350707] [2020-12-22 05:27:39,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:39,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:27:39,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565747215] [2020-12-22 05:27:39,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:27:39,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:39,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:27:39,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:27:39,534 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand 7 states. [2020-12-22 05:27:39,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:39,581 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2020-12-22 05:27:39,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:27:39,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-22 05:27:39,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:39,583 INFO L225 Difference]: With dead ends: 97 [2020-12-22 05:27:39,583 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 05:27:39,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:27:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 05:27:39,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-12-22 05:27:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 05:27:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-12-22 05:27:39,595 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 32 [2020-12-22 05:27:39,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:39,595 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-12-22 05:27:39,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:27:39,595 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-12-22 05:27:39,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:27:39,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:39,596 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:39,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 05:27:39,810 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:39,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:39,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1150939168, now seen corresponding path program 2 times [2020-12-22 05:27:39,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:39,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500406896] [2020-12-22 05:27:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:39,822 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:39,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076098290] [2020-12-22 05:27:39,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:39,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:27:39,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:27:39,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 05:27:39,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 05:27:40,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500406896] [2020-12-22 05:27:40,008 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:40,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076098290] [2020-12-22 05:27:40,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:40,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:27:40,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015952375] [2020-12-22 05:27:40,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:27:40,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:40,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:27:40,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:27:40,010 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 7 states. [2020-12-22 05:27:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:40,229 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2020-12-22 05:27:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:27:40,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-22 05:27:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:40,231 INFO L225 Difference]: With dead ends: 113 [2020-12-22 05:27:40,231 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 05:27:40,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:27:40,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 05:27:40,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-12-22 05:27:40,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 05:27:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2020-12-22 05:27:40,243 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 32 [2020-12-22 05:27:40,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:40,244 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2020-12-22 05:27:40,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:27:40,244 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2020-12-22 05:27:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:27:40,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:40,245 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:40,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 05:27:40,459 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:40,460 INFO L82 PathProgramCache]: Analyzing trace with hash -900022411, now seen corresponding path program 1 times [2020-12-22 05:27:40,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:40,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686500038] [2020-12-22 05:27:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:40,471 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:40,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973418788] [2020-12-22 05:27:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:40,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:27:40,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:40,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686500038] [2020-12-22 05:27:40,784 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:40,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973418788] [2020-12-22 05:27:40,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:40,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:27:40,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139336030] [2020-12-22 05:27:40,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:27:40,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:40,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:27:40,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:27:40,785 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand 9 states. [2020-12-22 05:27:41,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:41,314 INFO L93 Difference]: Finished difference Result 132 states and 154 transitions. [2020-12-22 05:27:41,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:27:41,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-22 05:27:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:41,316 INFO L225 Difference]: With dead ends: 132 [2020-12-22 05:27:41,316 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 05:27:41,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:27:41,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 05:27:41,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-12-22 05:27:41,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-22 05:27:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2020-12-22 05:27:41,327 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 33 [2020-12-22 05:27:41,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:41,327 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2020-12-22 05:27:41,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:27:41,327 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2020-12-22 05:27:41,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:27:41,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:41,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:41,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:27:41,540 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:41,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:41,540 INFO L82 PathProgramCache]: Analyzing trace with hash 918142130, now seen corresponding path program 1 times [2020-12-22 05:27:41,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:41,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405721247] [2020-12-22 05:27:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:41,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:41,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507335707] [2020-12-22 05:27:41,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:41,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:27:41,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:41,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405721247] [2020-12-22 05:27:41,884 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:41,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507335707] [2020-12-22 05:27:41,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:41,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:27:41,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494668738] [2020-12-22 05:27:41,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:27:41,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:41,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:27:41,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:27:41,886 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 10 states. [2020-12-22 05:27:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:43,971 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2020-12-22 05:27:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:27:43,972 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-12-22 05:27:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:43,973 INFO L225 Difference]: With dead ends: 154 [2020-12-22 05:27:43,973 INFO L226 Difference]: Without dead ends: 137 [2020-12-22 05:27:43,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-12-22 05:27:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-22 05:27:43,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 93. [2020-12-22 05:27:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 05:27:43,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2020-12-22 05:27:43,986 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 36 [2020-12-22 05:27:43,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:43,986 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2020-12-22 05:27:43,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:27:43,987 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2020-12-22 05:27:43,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:27:43,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:43,988 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:44,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:44,201 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:44,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:44,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1625393032, now seen corresponding path program 3 times [2020-12-22 05:27:44,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:44,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486415329] [2020-12-22 05:27:44,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:44,221 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:44,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359393861] [2020-12-22 05:27:44,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:44,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:27:44,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:27:44,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 05:27:44,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 05:27:48,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486415329] [2020-12-22 05:27:48,422 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:48,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359393861] [2020-12-22 05:27:48,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:48,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:27:48,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659419912] [2020-12-22 05:27:48,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:27:48,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:48,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:27:48,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=29, Unknown=2, NotChecked=0, Total=42 [2020-12-22 05:27:48,424 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand 7 states. [2020-12-22 05:28:56,300 WARN L197 SmtUtils]: Spent 24.49 s on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-12-22 05:29:06,418 WARN L197 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-22 05:29:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:53,504 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2020-12-22 05:29:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:29:53,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-12-22 05:29:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:53,506 INFO L225 Difference]: With dead ends: 154 [2020-12-22 05:29:53,506 INFO L226 Difference]: Without dead ends: 144 [2020-12-22 05:29:53,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 60.0s TimeCoverageRelationStatistics Valid=71, Invalid=155, Unknown=14, NotChecked=0, Total=240 [2020-12-22 05:29:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-22 05:29:53,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 108. [2020-12-22 05:29:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 05:29:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2020-12-22 05:29:53,519 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 36 [2020-12-22 05:29:53,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:53,520 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2020-12-22 05:29:53,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:29:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2020-12-22 05:29:53,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:29:53,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:53,520 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:53,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:53,721 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:53,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1658895220, now seen corresponding path program 1 times [2020-12-22 05:29:53,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:53,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13975573] [2020-12-22 05:29:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:53,730 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:53,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975198911] [2020-12-22 05:29:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:53,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:29:53,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:53,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13975573] [2020-12-22 05:29:53,876 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:53,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975198911] [2020-12-22 05:29:53,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:53,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:29:53,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663105799] [2020-12-22 05:29:53,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:29:53,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:53,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:29:53,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:29:53,878 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand 7 states. [2020-12-22 05:29:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:53,972 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2020-12-22 05:29:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:29:53,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-22 05:29:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:53,974 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:29:53,974 INFO L226 Difference]: Without dead ends: 110 [2020-12-22 05:29:53,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:29:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-22 05:29:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-12-22 05:29:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-22 05:29:53,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2020-12-22 05:29:53,987 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 37 [2020-12-22 05:29:53,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:53,987 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2020-12-22 05:29:53,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:29:53,987 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2020-12-22 05:29:53,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:29:53,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:53,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:54,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:54,189 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:54,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:54,189 INFO L82 PathProgramCache]: Analyzing trace with hash 406136064, now seen corresponding path program 2 times [2020-12-22 05:29:54,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:54,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889581234] [2020-12-22 05:29:54,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:54,203 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:54,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961599476] [2020-12-22 05:29:54,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:54,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:29:54,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:54,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-22 05:29:54,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:54,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889581234] [2020-12-22 05:29:54,965 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:54,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961599476] [2020-12-22 05:29:54,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:54,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:29:54,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558352857] [2020-12-22 05:29:54,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:29:54,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:54,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:29:54,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:29:54,967 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand 13 states. [2020-12-22 05:29:56,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:56,140 INFO L93 Difference]: Finished difference Result 162 states and 197 transitions. [2020-12-22 05:29:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:29:56,141 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-12-22 05:29:56,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:56,142 INFO L225 Difference]: With dead ends: 162 [2020-12-22 05:29:56,142 INFO L226 Difference]: Without dead ends: 122 [2020-12-22 05:29:56,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-12-22 05:29:56,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-12-22 05:29:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 111. [2020-12-22 05:29:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-22 05:29:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2020-12-22 05:29:56,157 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 39 [2020-12-22 05:29:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:56,157 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2020-12-22 05:29:56,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:29:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2020-12-22 05:29:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 05:29:56,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:56,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:56,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 05:29:56,372 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:56,373 INFO L82 PathProgramCache]: Analyzing trace with hash -294710610, now seen corresponding path program 2 times [2020-12-22 05:29:56,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:56,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202318204] [2020-12-22 05:29:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:56,382 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:56,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14112358] [2020-12-22 05:29:56,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:56,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:29:56,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:56,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:29:56,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:56,548 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:56,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202318204] [2020-12-22 05:29:56,549 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:56,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14112358] [2020-12-22 05:29:56,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:56,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:29:56,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784341653] [2020-12-22 05:29:56,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:29:56,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:56,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:29:56,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:29:56,551 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand 8 states. [2020-12-22 05:29:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:56,617 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2020-12-22 05:29:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:29:56,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-12-22 05:29:56,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:56,619 INFO L225 Difference]: With dead ends: 130 [2020-12-22 05:29:56,619 INFO L226 Difference]: Without dead ends: 120 [2020-12-22 05:29:56,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:29:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-22 05:29:56,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-12-22 05:29:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-22 05:29:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2020-12-22 05:29:56,632 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 40 [2020-12-22 05:29:56,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:56,632 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2020-12-22 05:29:56,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:29:56,633 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2020-12-22 05:29:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 05:29:56,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:56,633 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:56,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 05:29:56,849 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:56,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:56,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2116618682, now seen corresponding path program 2 times [2020-12-22 05:29:56,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:56,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640698271] [2020-12-22 05:29:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:56,859 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:56,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555753595] [2020-12-22 05:29:56,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:56,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:29:56,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:56,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:29:56,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:57,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640698271] [2020-12-22 05:29:57,043 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:57,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555753595] [2020-12-22 05:29:57,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:57,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:29:57,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451614173] [2020-12-22 05:29:57,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:29:57,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:57,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:29:57,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:29:57,045 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 8 states. [2020-12-22 05:29:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:57,149 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2020-12-22 05:29:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:29:57,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-12-22 05:29:57,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:57,150 INFO L225 Difference]: With dead ends: 129 [2020-12-22 05:29:57,150 INFO L226 Difference]: Without dead ends: 121 [2020-12-22 05:29:57,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:29:57,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-22 05:29:57,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-12-22 05:29:57,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-22 05:29:57,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2020-12-22 05:29:57,164 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 45 [2020-12-22 05:29:57,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:57,164 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2020-12-22 05:29:57,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:29:57,164 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2020-12-22 05:29:57,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 05:29:57,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:57,165 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:57,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 05:29:57,380 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:57,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1302416352, now seen corresponding path program 3 times [2020-12-22 05:29:57,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:57,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768481733] [2020-12-22 05:29:57,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:57,389 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:57,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922385729] [2020-12-22 05:29:57,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:57,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:29:57,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:57,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 62 conjunts are in the unsatisfiable core [2020-12-22 05:29:57,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:58,563 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:29:58,568 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:29:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:58,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768481733] [2020-12-22 05:29:58,656 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:58,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922385729] [2020-12-22 05:29:58,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:58,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:29:58,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528696926] [2020-12-22 05:29:58,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:29:58,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:58,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:29:58,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:29:58,659 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand 17 states. [2020-12-22 05:30:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:00,750 INFO L93 Difference]: Finished difference Result 171 states and 205 transitions. [2020-12-22 05:30:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:30:00,751 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-12-22 05:30:00,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:00,752 INFO L225 Difference]: With dead ends: 171 [2020-12-22 05:30:00,752 INFO L226 Difference]: Without dead ends: 135 [2020-12-22 05:30:00,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2020-12-22 05:30:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-22 05:30:00,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-12-22 05:30:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-22 05:30:00,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2020-12-22 05:30:00,767 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 46 [2020-12-22 05:30:00,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:00,767 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2020-12-22 05:30:00,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:30:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2020-12-22 05:30:00,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 05:30:00,768 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:00,768 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:00,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 05:30:00,983 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:00,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:00,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1720227954, now seen corresponding path program 3 times [2020-12-22 05:30:00,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:00,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568300141] [2020-12-22 05:30:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:00,992 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:00,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671114716] [2020-12-22 05:30:00,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:01,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:30:01,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:01,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:30:01,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:01,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568300141] [2020-12-22 05:30:01,224 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:01,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671114716] [2020-12-22 05:30:01,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:01,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:30:01,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46461213] [2020-12-22 05:30:01,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:30:01,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:01,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:30:01,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:30:01,225 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand 9 states. [2020-12-22 05:30:01,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:01,311 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2020-12-22 05:30:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:30:01,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-12-22 05:30:01,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:01,316 INFO L225 Difference]: With dead ends: 152 [2020-12-22 05:30:01,316 INFO L226 Difference]: Without dead ends: 142 [2020-12-22 05:30:01,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:30:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-22 05:30:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-12-22 05:30:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-22 05:30:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2020-12-22 05:30:01,332 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 47 [2020-12-22 05:30:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:01,333 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2020-12-22 05:30:01,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:30:01,333 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2020-12-22 05:30:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 05:30:01,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:01,334 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:01,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 05:30:01,550 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:01,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:01,550 INFO L82 PathProgramCache]: Analyzing trace with hash -572369234, now seen corresponding path program 4 times [2020-12-22 05:30:01,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:01,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648958902] [2020-12-22 05:30:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:01,559 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:01,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339381558] [2020-12-22 05:30:01,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:01,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:30:01,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:01,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-22 05:30:01,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:02,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648958902] [2020-12-22 05:30:02,407 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:02,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339381558] [2020-12-22 05:30:02,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:02,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:30:02,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516416140] [2020-12-22 05:30:02,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:30:02,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:02,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:30:02,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:30:02,410 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 13 states. [2020-12-22 05:30:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:03,954 INFO L93 Difference]: Finished difference Result 201 states and 241 transitions. [2020-12-22 05:30:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:30:03,955 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-12-22 05:30:03,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:03,956 INFO L225 Difference]: With dead ends: 201 [2020-12-22 05:30:03,956 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 05:30:03,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-12-22 05:30:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 05:30:03,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 143. [2020-12-22 05:30:03,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 05:30:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-12-22 05:30:03,975 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 47 [2020-12-22 05:30:03,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:03,976 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-12-22 05:30:03,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:30:03,976 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-12-22 05:30:03,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 05:30:03,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:03,976 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:04,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:04,190 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:04,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:04,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1786473789, now seen corresponding path program 2 times [2020-12-22 05:30:04,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:04,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805289698] [2020-12-22 05:30:04,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:04,207 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:04,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790552978] [2020-12-22 05:30:04,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:04,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:30:04,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:04,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-22 05:30:04,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:05,631 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2020-12-22 05:30:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:05,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805289698] [2020-12-22 05:30:05,859 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:05,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790552978] [2020-12-22 05:30:05,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:05,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-22 05:30:05,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94451171] [2020-12-22 05:30:05,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 05:30:05,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:05,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 05:30:05,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:30:05,861 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 18 states. [2020-12-22 05:30:07,568 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 24 [2020-12-22 05:30:07,739 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 24 [2020-12-22 05:30:07,948 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-12-22 05:30:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:08,181 INFO L93 Difference]: Finished difference Result 179 states and 212 transitions. [2020-12-22 05:30:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:30:08,183 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-12-22 05:30:08,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:08,184 INFO L225 Difference]: With dead ends: 179 [2020-12-22 05:30:08,184 INFO L226 Difference]: Without dead ends: 151 [2020-12-22 05:30:08,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2020-12-22 05:30:08,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-22 05:30:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-12-22 05:30:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-22 05:30:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2020-12-22 05:30:08,202 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 48 [2020-12-22 05:30:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:08,202 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2020-12-22 05:30:08,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 05:30:08,202 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2020-12-22 05:30:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:30:08,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:08,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:08,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 05:30:08,418 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:08,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:08,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1895924060, now seen corresponding path program 2 times [2020-12-22 05:30:08,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:08,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606365560] [2020-12-22 05:30:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:08,427 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:08,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955028665] [2020-12-22 05:30:08,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:08,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:30:08,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:08,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:30:08,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:09,184 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:30:12,547 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:30:18,644 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:30:20,670 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:30:22,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606365560] [2020-12-22 05:30:22,691 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:22,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955028665] [2020-12-22 05:30:22,691 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:30:22,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:22,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:30:22,692 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:30:22,692 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:30:22,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:22,922 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:30:22,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:30:22 BoogieIcfgContainer [2020-12-22 05:30:22,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:30:22,923 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:30:22,923 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:30:22,924 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:30:22,924 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:27:25" (3/4) ... [2020-12-22 05:30:22,928 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:30:22,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:30:22,929 INFO L168 Benchmark]: Toolchain (without parser) took 178784.44 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 127.2 MB in the beginning and 100.2 MB in the end (delta: 27.1 MB). Peak memory consumption was 94.9 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:22,930 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:30:22,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.14 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 117.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:22,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.12 ms. Allocated memory is still 152.0 MB. Free memory was 116.9 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:22,931 INFO L168 Benchmark]: Boogie Preprocessor took 29.84 ms. Allocated memory is still 152.0 MB. Free memory was 115.4 MB in the beginning and 114.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:22,931 INFO L168 Benchmark]: RCFGBuilder took 726.49 ms. Allocated memory is still 152.0 MB. Free memory was 114.2 MB in the beginning and 129.1 MB in the end (delta: -14.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:22,932 INFO L168 Benchmark]: TraceAbstraction took 177570.60 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 128.5 MB in the beginning and 100.2 MB in the end (delta: 28.4 MB). Peak memory consumption was 96.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:22,932 INFO L168 Benchmark]: Witness Printer took 4.93 ms. Allocated memory is still 219.2 MB. Free memory is still 100.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:30:22,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 387.14 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 117.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.12 ms. Allocated memory is still 152.0 MB. Free memory was 116.9 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.84 ms. Allocated memory is still 152.0 MB. Free memory was 115.4 MB in the beginning and 114.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 726.49 ms. Allocated memory is still 152.0 MB. Free memory was 114.2 MB in the beginning and 129.1 MB in the end (delta: -14.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 177570.60 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 128.5 MB in the beginning and 100.2 MB in the end (delta: 28.4 MB). Peak memory consumption was 96.0 MB. Max. memory is 8.0 GB. * Witness Printer took 4.93 ms. Allocated memory is still 219.2 MB. Free memory is still 100.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 [L35] EXPR counter++ [L35] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND TRUE !(p != 1) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 177.4s, OverallIterations: 28, TraceHistogramMax: 5, AutomataDifference: 143.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 861 SDtfs, 2256 SDslu, 2687 SDs, 0 SdLazy, 3238 SolverSat, 625 SolverUnsat, 35 SolverUnknown, 0 SolverNotchecked, 77.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 879 GetRequests, 574 SyntacticMatches, 1 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 72.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 27 MinimizatonAttempts, 261 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 783 NumberOfCodeBlocks, 735 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 756 ConstructedInterpolants, 1 QuantifiedInterpolants, 337085 SizeOfPredicates, 182 NumberOfNonLiveVariables, 2972 ConjunctsInSsa, 553 ConjunctsInUnsatCore, 27 InterpolantComputations, 8 PerfectInterpolantSequences, 51/491 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...