/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/egcd-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:11:54,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:11:54,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:11:54,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:11:54,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:11:54,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:11:54,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:11:54,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:11:54,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:11:54,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:11:54,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:11:54,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:11:54,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:11:54,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:11:54,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:11:54,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:11:54,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:11:54,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:11:54,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:11:54,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:11:54,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:11:54,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:11:54,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:11:54,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:11:54,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:11:54,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:11:54,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:11:54,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:11:54,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:11:54,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:11:54,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:11:54,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:11:54,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:11:54,994 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:11:54,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:11:54,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:11:54,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:11:54,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:11:54,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:11:54,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:11:54,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:11:54,998 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:11:54,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:11:54,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:11:54,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:11:54,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:11:54,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:11:54,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:11:54,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:11:55,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:11:55,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:11:55,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:11:55,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:11:55,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:11:55,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:11:55,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:11:55,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:11:55,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:11:55,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:11:55,474 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:11:55,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c [2020-12-22 05:11:55,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4f12fd55/ed5bea0ec9c24356aa8bf0d492501286/FLAGe3f01c1c9 [2020-12-22 05:11:56,089 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:11:56,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c [2020-12-22 05:11:56,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4f12fd55/ed5bea0ec9c24356aa8bf0d492501286/FLAGe3f01c1c9 [2020-12-22 05:11:56,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4f12fd55/ed5bea0ec9c24356aa8bf0d492501286 [2020-12-22 05:11:56,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:11:56,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:11:56,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:11:56,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:11:56,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:11:56,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:11:56" (1/1) ... [2020-12-22 05:11:56,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2a86fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56, skipping insertion in model container [2020-12-22 05:11:56,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:11:56" (1/1) ... [2020-12-22 05:11:56,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:11:56,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:11:56,716 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/egcd-ll_valuebound100.c[489,502] [2020-12-22 05:11:56,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:11:56,751 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:11:56,763 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/egcd-ll_valuebound100.c[489,502] [2020-12-22 05:11:56,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:11:56,789 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:11:56,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56 WrapperNode [2020-12-22 05:11:56,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:11:56,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:11:56,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:11:56,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:11:56,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56" (1/1) ... [2020-12-22 05:11:56,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56" (1/1) ... [2020-12-22 05:11:56,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:11:56,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:11:56,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:11:56,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:11:56,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56" (1/1) ... [2020-12-22 05:11:56,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56" (1/1) ... [2020-12-22 05:11:56,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56" (1/1) ... [2020-12-22 05:11:56,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56" (1/1) ... [2020-12-22 05:11:56,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56" (1/1) ... [2020-12-22 05:11:56,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56" (1/1) ... [2020-12-22 05:11:56,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56" (1/1) ... [2020-12-22 05:11:56,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:11:56,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:11:56,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:11:56,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:11:56,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56" (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 05:11:56,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:11:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:11:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:11:56,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:11:57,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:11:57,529 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-22 05:11:57,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:11:57 BoogieIcfgContainer [2020-12-22 05:11:57,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:11:57,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:11:57,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:11:57,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:11:57,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:11:56" (1/3) ... [2020-12-22 05:11:57,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516020f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:11:57, skipping insertion in model container [2020-12-22 05:11:57,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:11:56" (2/3) ... [2020-12-22 05:11:57,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516020f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:11:57, skipping insertion in model container [2020-12-22 05:11:57,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:11:57" (3/3) ... [2020-12-22 05:11:57,545 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound100.c [2020-12-22 05:11:57,553 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:11:57,558 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:11:57,577 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:11:57,621 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:11:57,621 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:11:57,621 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:11:57,621 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:11:57,621 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:11:57,622 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:11:57,622 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:11:57,622 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:11:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-12-22 05:11:57,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:11:57,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:11:57,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:11:57,649 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 05:11:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:11:57,655 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-12-22 05:11:57,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:11:57,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072174084] [2020-12-22 05:11:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:11:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:11:57,868 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 05:11:57,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072174084] [2020-12-22 05:11:57,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:11:57,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:11:57,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535734135] [2020-12-22 05:11:57,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:11:57,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:11:57,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:11:57,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:11:57,897 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-12-22 05:11:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:11:57,926 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2020-12-22 05:11:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:11:57,928 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-22 05:11:57,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:11:57,936 INFO L225 Difference]: With dead ends: 85 [2020-12-22 05:11:57,936 INFO L226 Difference]: Without dead ends: 40 [2020-12-22 05:11:57,940 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 05:11:57,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-22 05:11:57,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-12-22 05:11:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-22 05:11:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-12-22 05:11:57,978 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2020-12-22 05:11:57,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:11:57,979 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-12-22 05:11:57,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:11:57,979 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-12-22 05:11:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:11:57,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:11:57,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:11:57,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:11:57,980 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 05:11:57,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:11:57,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-12-22 05:11:57,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:11:57,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086113407] [2020-12-22 05:11:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:11:58,006 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:11:58,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981799165] [2020-12-22 05:11:58,007 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 05:11:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:11:58,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:11:58,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:11:58,180 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 05:11:58,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086113407] [2020-12-22 05:11:58,181 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:11:58,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981799165] [2020-12-22 05:11:58,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:11:58,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:11:58,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127971977] [2020-12-22 05:11:58,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:11:58,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:11:58,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:11:58,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:11:58,186 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 5 states. [2020-12-22 05:11:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:11:58,360 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-12-22 05:11:58,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:11:58,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 05:11:58,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:11:58,366 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:11:58,367 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:11:58,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:11:58,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:11:58,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-12-22 05:11:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 05:11:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-12-22 05:11:58,406 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2020-12-22 05:11:58,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:11:58,407 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-12-22 05:11:58,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:11:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-12-22 05:11:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:11:58,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:11:58,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:11:58,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:11:58,622 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 05:11:58,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:11:58,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2020-12-22 05:11:58,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:11:58,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394568918] [2020-12-22 05:11:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:11:58,656 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:11:58,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267092423] [2020-12-22 05:11:58,658 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 05:11:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:11:58,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:11:58,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:11:58,992 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 05:11:58,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394568918] [2020-12-22 05:11:58,993 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:11:58,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267092423] [2020-12-22 05:11:58,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:11:58,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 05:11:58,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027943288] [2020-12-22 05:11:58,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:11:58,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:11:58,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:11:58,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:11:58,996 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 12 states. [2020-12-22 05:11:59,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:11:59,591 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2020-12-22 05:11:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:11:59,592 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-12-22 05:11:59,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:11:59,596 INFO L225 Difference]: With dead ends: 98 [2020-12-22 05:11:59,597 INFO L226 Difference]: Without dead ends: 96 [2020-12-22 05:11:59,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:11:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-22 05:11:59,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2020-12-22 05:11:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-22 05:11:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2020-12-22 05:11:59,633 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 15 [2020-12-22 05:11:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:11:59,634 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2020-12-22 05:11:59,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:11:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2020-12-22 05:11:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:11:59,635 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:11:59,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:11:59,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:11:59,851 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 05:11:59,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:11:59,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2020-12-22 05:11:59,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:11:59,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339948429] [2020-12-22 05:11:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:11:59,871 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:11:59,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269243423] [2020-12-22 05:11:59,872 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 05:11:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:11:59,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:11:59,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:00,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339948429] [2020-12-22 05:12:00,102 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:00,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269243423] [2020-12-22 05:12:00,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:00,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:12:00,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539262166] [2020-12-22 05:12:00,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:00,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:00,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:00,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:00,105 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 8 states. [2020-12-22 05:12:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:00,343 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-12-22 05:12:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:00,344 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-22 05:12:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:00,347 INFO L225 Difference]: With dead ends: 84 [2020-12-22 05:12:00,347 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 05:12:00,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:12:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 05:12:00,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-12-22 05:12:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-22 05:12:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-12-22 05:12:00,370 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 17 [2020-12-22 05:12:00,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:00,370 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-12-22 05:12:00,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:00,371 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-12-22 05:12:00,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:12:00,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:00,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:00,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:00,588 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 05:12:00,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:00,589 INFO L82 PathProgramCache]: Analyzing trace with hash 850548497, now seen corresponding path program 1 times [2020-12-22 05:12:00,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:00,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141088549] [2020-12-22 05:12:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:00,626 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:00,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244125880] [2020-12-22 05:12:00,626 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 05:12:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:00,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 05:12:00,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:00,726 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 05:12:00,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141088549] [2020-12-22 05:12:00,727 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:00,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244125880] [2020-12-22 05:12:00,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:00,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:12:00,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633287787] [2020-12-22 05:12:00,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:12:00,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:00,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:12:00,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:12:00,737 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 4 states. [2020-12-22 05:12:00,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:00,795 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-12-22 05:12:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:12:00,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-22 05:12:00,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:00,798 INFO L225 Difference]: With dead ends: 68 [2020-12-22 05:12:00,798 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:12:00,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 05:12:00,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:12:00,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-22 05:12:00,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 05:12:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2020-12-22 05:12:00,823 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 20 [2020-12-22 05:12:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:00,823 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2020-12-22 05:12:00,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:12:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2020-12-22 05:12:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:12:00,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:00,825 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:01,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:01,039 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 05:12:01,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:01,042 INFO L82 PathProgramCache]: Analyzing trace with hash 598848193, now seen corresponding path program 1 times [2020-12-22 05:12:01,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:01,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068217744] [2020-12-22 05:12:01,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:01,057 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:01,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471586658] [2020-12-22 05:12:01,058 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 05:12:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:01,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:12:01,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 05:12:01,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068217744] [2020-12-22 05:12:01,189 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:01,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471586658] [2020-12-22 05:12:01,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:01,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:12:01,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094801861] [2020-12-22 05:12:01,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:12:01,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:01,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:12:01,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:12:01,191 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 5 states. [2020-12-22 05:12:01,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:01,306 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-12-22 05:12:01,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:12:01,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-22 05:12:01,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:01,307 INFO L225 Difference]: With dead ends: 88 [2020-12-22 05:12:01,307 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 05:12:01,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:12:01,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 05:12:01,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2020-12-22 05:12:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 05:12:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-12-22 05:12:01,316 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2020-12-22 05:12:01,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:01,317 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-12-22 05:12:01,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:12:01,317 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-12-22 05:12:01,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:12:01,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:01,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:01,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:12:01,532 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 05:12:01,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:01,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1333477300, now seen corresponding path program 1 times [2020-12-22 05:12:01,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:01,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116654802] [2020-12-22 05:12:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:01,548 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:01,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8509232] [2020-12-22 05:12:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:12:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:01,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 05:12:01,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:01,695 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 05:12:01,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116654802] [2020-12-22 05:12:01,696 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:01,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8509232] [2020-12-22 05:12:01,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:01,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:12:01,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454228579] [2020-12-22 05:12:01,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:01,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:01,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:01,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:01,698 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 8 states. [2020-12-22 05:12:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:01,861 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-12-22 05:12:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:12:01,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-12-22 05:12:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:01,863 INFO L225 Difference]: With dead ends: 80 [2020-12-22 05:12:01,863 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 05:12:01,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:12:01,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 05:12:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-12-22 05:12:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-22 05:12:01,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-12-22 05:12:01,883 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2020-12-22 05:12:01,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:01,883 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-12-22 05:12:01,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:01,883 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-12-22 05:12:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 05:12:01,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:01,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:02,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:02,100 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 05:12:02,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:02,101 INFO L82 PathProgramCache]: Analyzing trace with hash -89606074, now seen corresponding path program 1 times [2020-12-22 05:12:02,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:02,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211731938] [2020-12-22 05:12:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:02,116 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:02,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378779578] [2020-12-22 05:12:02,117 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 05:12:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:02,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 05:12:02,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:02,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211731938] [2020-12-22 05:12:02,369 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:02,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378779578] [2020-12-22 05:12:02,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:02,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:12:02,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305644895] [2020-12-22 05:12:02,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:12:02,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:02,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:12:02,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:12:02,372 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 9 states. [2020-12-22 05:12:02,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:02,853 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-12-22 05:12:02,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:12:02,853 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-22 05:12:02,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:02,854 INFO L225 Difference]: With dead ends: 105 [2020-12-22 05:12:02,854 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 05:12:02,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:12:02,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 05:12:02,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2020-12-22 05:12:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 05:12:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-12-22 05:12:02,866 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 23 [2020-12-22 05:12:02,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:02,866 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-12-22 05:12:02,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:12:02,866 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-12-22 05:12:02,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:12:02,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:02,867 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:03,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:03,082 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 05:12:03,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:03,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1021281049, now seen corresponding path program 1 times [2020-12-22 05:12:03,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:03,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401545053] [2020-12-22 05:12:03,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:03,104 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:03,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260828157] [2020-12-22 05:12:03,106 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 05:12:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:03,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-22 05:12:03,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:03,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401545053] [2020-12-22 05:12:03,413 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:03,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260828157] [2020-12-22 05:12:03,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:03,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:12:03,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002831993] [2020-12-22 05:12:03,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:12:03,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:03,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:12:03,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:12:03,420 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 11 states. [2020-12-22 05:12:03,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:03,821 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-12-22 05:12:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:12:03,822 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-12-22 05:12:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:03,823 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:12:03,823 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 05:12:03,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:12:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 05:12:03,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-12-22 05:12:03,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 05:12:03,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2020-12-22 05:12:03,837 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 25 [2020-12-22 05:12:03,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:03,837 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2020-12-22 05:12:03,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:12:03,837 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2020-12-22 05:12:03,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:12:03,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:03,839 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:04,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 05:12:04,052 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 05:12:04,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:04,053 INFO L82 PathProgramCache]: Analyzing trace with hash 477321350, now seen corresponding path program 1 times [2020-12-22 05:12:04,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:04,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600220815] [2020-12-22 05:12:04,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:04,079 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:04,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157750118] [2020-12-22 05:12:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:12:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:04,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:12:04,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:04,266 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 05:12:04,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600220815] [2020-12-22 05:12:04,267 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:04,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157750118] [2020-12-22 05:12:04,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:04,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:12:04,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723345819] [2020-12-22 05:12:04,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:04,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:04,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:04,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:04,269 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 8 states. [2020-12-22 05:12:04,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:04,547 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-12-22 05:12:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:04,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-22 05:12:04,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:04,548 INFO L225 Difference]: With dead ends: 116 [2020-12-22 05:12:04,548 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 05:12:04,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:12:04,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 05:12:04,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2020-12-22 05:12:04,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 05:12:04,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2020-12-22 05:12:04,561 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 29 [2020-12-22 05:12:04,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:04,561 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2020-12-22 05:12:04,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:04,562 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2020-12-22 05:12:04,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:12:04,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:04,563 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:04,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:04,777 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 05:12:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:04,777 INFO L82 PathProgramCache]: Analyzing trace with hash 219215494, now seen corresponding path program 2 times [2020-12-22 05:12:04,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:04,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497242202] [2020-12-22 05:12:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:04,808 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:04,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [902490591] [2020-12-22 05:12:04,808 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 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 05:12:04,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:12:04,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:04,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:12:04,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:04,996 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 05:12:04,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497242202] [2020-12-22 05:12:04,996 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:04,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902490591] [2020-12-22 05:12:04,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:04,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:12:04,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836910849] [2020-12-22 05:12:04,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:04,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:04,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:04,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:04,998 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 8 states. [2020-12-22 05:12:05,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:05,461 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2020-12-22 05:12:05,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:12:05,462 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-22 05:12:05,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:05,463 INFO L225 Difference]: With dead ends: 131 [2020-12-22 05:12:05,463 INFO L226 Difference]: Without dead ends: 127 [2020-12-22 05:12:05,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:12:05,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-22 05:12:05,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2020-12-22 05:12:05,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-22 05:12:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-12-22 05:12:05,479 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 29 [2020-12-22 05:12:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:05,479 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-12-22 05:12:05,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:05,479 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-12-22 05:12:05,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:12:05,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:05,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:05,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:05,695 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 05:12:05,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:05,697 INFO L82 PathProgramCache]: Analyzing trace with hash -855526903, now seen corresponding path program 1 times [2020-12-22 05:12:05,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:05,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985420438] [2020-12-22 05:12:05,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:05,712 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:05,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651740747] [2020-12-22 05:12:05,713 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 05:12:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:05,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:12:05,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:05,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985420438] [2020-12-22 05:12:05,968 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:05,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651740747] [2020-12-22 05:12:05,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:05,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:12:05,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248623479] [2020-12-22 05:12:05,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:05,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:05,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:05,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:05,973 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 8 states. [2020-12-22 05:12:06,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:06,289 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2020-12-22 05:12:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:06,290 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 05:12:06,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:06,292 INFO L225 Difference]: With dead ends: 142 [2020-12-22 05:12:06,293 INFO L226 Difference]: Without dead ends: 140 [2020-12-22 05:12:06,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:12:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-22 05:12:06,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2020-12-22 05:12:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-22 05:12:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-12-22 05:12:06,310 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 31 [2020-12-22 05:12:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:06,310 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-12-22 05:12:06,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-12-22 05:12:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:12:06,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:06,316 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:06,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:12:06,531 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 05:12:06,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:06,532 INFO L82 PathProgramCache]: Analyzing trace with hash 155590347, now seen corresponding path program 2 times [2020-12-22 05:12:06,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:06,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386216530] [2020-12-22 05:12:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:06,544 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:06,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551006216] [2020-12-22 05:12:06,545 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 05:12:06,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:12:06,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:06,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-22 05:12:06,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:06,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386216530] [2020-12-22 05:12:06,903 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:06,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551006216] [2020-12-22 05:12:06,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:06,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:12:06,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676585857] [2020-12-22 05:12:06,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:12:06,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:06,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:12:06,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:12:06,905 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 11 states. [2020-12-22 05:12:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:07,467 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2020-12-22 05:12:07,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:12:07,467 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-12-22 05:12:07,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:07,469 INFO L225 Difference]: With dead ends: 148 [2020-12-22 05:12:07,469 INFO L226 Difference]: Without dead ends: 146 [2020-12-22 05:12:07,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:12:07,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-22 05:12:07,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2020-12-22 05:12:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-22 05:12:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2020-12-22 05:12:07,484 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 31 [2020-12-22 05:12:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:07,484 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2020-12-22 05:12:07,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:12:07,485 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2020-12-22 05:12:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:12:07,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:07,485 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:07,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:12:07,699 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 05:12:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:07,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1663177194, now seen corresponding path program 2 times [2020-12-22 05:12:07,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:07,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329760419] [2020-12-22 05:12:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:07,711 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:07,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304542889] [2020-12-22 05:12:07,711 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 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 05:12:07,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:12:07,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:07,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-22 05:12:07,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:07,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329760419] [2020-12-22 05:12:07,999 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:07,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304542889] [2020-12-22 05:12:07,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:07,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:12:07,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951778007] [2020-12-22 05:12:08,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:12:08,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:08,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:12:08,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:12:08,001 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand 9 states. [2020-12-22 05:12:08,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:08,265 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2020-12-22 05:12:08,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:08,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-22 05:12:08,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:08,266 INFO L225 Difference]: With dead ends: 160 [2020-12-22 05:12:08,267 INFO L226 Difference]: Without dead ends: 148 [2020-12-22 05:12:08,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:12:08,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-22 05:12:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2020-12-22 05:12:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-22 05:12:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2020-12-22 05:12:08,282 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 33 [2020-12-22 05:12:08,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:08,283 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2020-12-22 05:12:08,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:12:08,283 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2020-12-22 05:12:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:12:08,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:08,284 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:08,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:12:08,497 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 05:12:08,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:08,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1610721748, now seen corresponding path program 1 times [2020-12-22 05:12:08,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:08,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072484233] [2020-12-22 05:12:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:08,508 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:08,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708565438] [2020-12-22 05:12:08,509 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 05:12:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:08,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:12:08,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:08,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072484233] [2020-12-22 05:12:08,718 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:08,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708565438] [2020-12-22 05:12:08,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:08,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:12:08,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065961548] [2020-12-22 05:12:08,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:08,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:08,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:08,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:08,720 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 8 states. [2020-12-22 05:12:09,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:09,057 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2020-12-22 05:12:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:09,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 05:12:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:09,064 INFO L225 Difference]: With dead ends: 159 [2020-12-22 05:12:09,064 INFO L226 Difference]: Without dead ends: 147 [2020-12-22 05:12:09,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:12:09,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-22 05:12:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2020-12-22 05:12:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-22 05:12:09,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2020-12-22 05:12:09,080 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 33 [2020-12-22 05:12:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:09,081 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2020-12-22 05:12:09,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2020-12-22 05:12:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:12:09,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:09,082 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:09,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:09,295 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 05:12:09,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:09,296 INFO L82 PathProgramCache]: Analyzing trace with hash 130855945, now seen corresponding path program 3 times [2020-12-22 05:12:09,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:09,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602275354] [2020-12-22 05:12:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:09,310 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:09,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338331441] [2020-12-22 05:12:09,312 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 05:12:09,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:12:09,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:09,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-22 05:12:09,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:09,719 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:12:09,725 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:12:09,729 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:12:13,976 WARN L197 SmtUtils]: Spent 3.21 s on a formula simplification that was a NOOP. DAG size: 29 [2020-12-22 05:12:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 05:12:14,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602275354] [2020-12-22 05:12:14,032 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:14,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338331441] [2020-12-22 05:12:14,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:14,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:12:14,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497682610] [2020-12-22 05:12:14,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:12:14,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:14,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:12:14,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2020-12-22 05:12:14,034 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand 17 states. [2020-12-22 05:12:14,446 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-12-22 05:12:16,560 WARN L197 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-22 05:12:16,781 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2020-12-22 05:12:20,930 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 28 [2020-12-22 05:12:26,158 WARN L197 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-12-22 05:12:34,846 WARN L197 SmtUtils]: Spent 8.58 s on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-12-22 05:12:35,633 WARN L197 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-22 05:12:36,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:36,893 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-12-22 05:12:36,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:12:36,895 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-12-22 05:12:36,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:36,896 INFO L225 Difference]: With dead ends: 172 [2020-12-22 05:12:36,896 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 05:12:36,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=191, Invalid=510, Unknown=1, NotChecked=0, Total=702 [2020-12-22 05:12:36,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 05:12:36,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2020-12-22 05:12:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-22 05:12:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-12-22 05:12:36,920 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 37 [2020-12-22 05:12:36,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:36,920 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-12-22 05:12:36,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:12:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-12-22 05:12:36,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:12:36,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:36,921 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:37,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 05:12:37,136 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 05:12:37,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:37,137 INFO L82 PathProgramCache]: Analyzing trace with hash -127249911, now seen corresponding path program 4 times [2020-12-22 05:12:37,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:37,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069925539] [2020-12-22 05:12:37,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:37,147 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:37,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496865032] [2020-12-22 05:12:37,148 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 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 05:12:37,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:12:37,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:37,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:12:37,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:37,413 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 05:12:37,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069925539] [2020-12-22 05:12:37,413 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:37,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496865032] [2020-12-22 05:12:37,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:37,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:12:37,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943673832] [2020-12-22 05:12:37,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:12:37,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:37,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:12:37,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:12:37,415 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-12-22 05:12:37,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:37,955 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2020-12-22 05:12:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:12:37,955 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 05:12:37,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:37,957 INFO L225 Difference]: With dead ends: 162 [2020-12-22 05:12:37,957 INFO L226 Difference]: Without dead ends: 158 [2020-12-22 05:12:37,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:12:37,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-22 05:12:37,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2020-12-22 05:12:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 05:12:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2020-12-22 05:12:37,981 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2020-12-22 05:12:37,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:37,981 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2020-12-22 05:12:37,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:12:37,982 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2020-12-22 05:12:37,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:12:37,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:37,982 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:38,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:12:38,196 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 05:12:38,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:38,197 INFO L82 PathProgramCache]: Analyzing trace with hash -127309493, now seen corresponding path program 5 times [2020-12-22 05:12:38,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:38,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488531811] [2020-12-22 05:12:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:38,206 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:38,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593716790] [2020-12-22 05:12:38,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_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 05:12:39,201 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-22 05:12:39,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:39,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:12:39,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:39,349 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 05:12:39,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488531811] [2020-12-22 05:12:39,350 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:39,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593716790] [2020-12-22 05:12:39,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:39,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:12:39,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764019360] [2020-12-22 05:12:39,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:12:39,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:39,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:12:39,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:12:39,352 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 7 states. [2020-12-22 05:12:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:39,693 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2020-12-22 05:12:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:12:39,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-22 05:12:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:39,695 INFO L225 Difference]: With dead ends: 162 [2020-12-22 05:12:39,695 INFO L226 Difference]: Without dead ends: 152 [2020-12-22 05:12:39,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:12:39,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-22 05:12:39,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2020-12-22 05:12:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 05:12:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2020-12-22 05:12:39,718 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2020-12-22 05:12:39,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:39,719 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2020-12-22 05:12:39,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:12:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2020-12-22 05:12:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:12:39,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:39,720 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:39,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 05:12:39,929 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 05:12:39,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:39,930 INFO L82 PathProgramCache]: Analyzing trace with hash 948563977, now seen corresponding path program 6 times [2020-12-22 05:12:39,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:39,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233241911] [2020-12-22 05:12:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:39,941 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:39,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210838412] [2020-12-22 05:12:39,944 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 05:12:40,009 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-22 05:12:40,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:40,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:12:40,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:40,211 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 05:12:40,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233241911] [2020-12-22 05:12:40,211 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:40,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210838412] [2020-12-22 05:12:40,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:40,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:12:40,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927032328] [2020-12-22 05:12:40,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:12:40,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:40,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:12:40,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:12:40,213 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 9 states. [2020-12-22 05:12:40,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:40,938 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2020-12-22 05:12:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:12:40,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 05:12:40,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:40,940 INFO L225 Difference]: With dead ends: 170 [2020-12-22 05:12:40,940 INFO L226 Difference]: Without dead ends: 166 [2020-12-22 05:12:40,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:12:40,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-22 05:12:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2020-12-22 05:12:40,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-22 05:12:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2020-12-22 05:12:40,994 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 37 [2020-12-22 05:12:40,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:40,994 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2020-12-22 05:12:40,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:12:40,994 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2020-12-22 05:12:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:12:40,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:40,997 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:41,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:41,212 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 05:12:41,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:41,213 INFO L82 PathProgramCache]: Analyzing trace with hash 948504395, now seen corresponding path program 7 times [2020-12-22 05:12:41,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:41,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825655455] [2020-12-22 05:12:41,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:41,221 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:41,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130400611] [2020-12-22 05:12:41,222 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 05:12:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:41,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 05:12:41,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:41,467 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 05:12:41,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825655455] [2020-12-22 05:12:41,468 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:41,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130400611] [2020-12-22 05:12:41,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:41,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:12:41,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241448553] [2020-12-22 05:12:41,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:12:41,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:41,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:12:41,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:12:41,469 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand 9 states. [2020-12-22 05:12:42,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:42,013 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2020-12-22 05:12:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:12:42,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 05:12:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:42,015 INFO L225 Difference]: With dead ends: 166 [2020-12-22 05:12:42,015 INFO L226 Difference]: Without dead ends: 156 [2020-12-22 05:12:42,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:12:42,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-22 05:12:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2020-12-22 05:12:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-12-22 05:12:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-12-22 05:12:42,038 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 37 [2020-12-22 05:12:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:42,038 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-12-22 05:12:42,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:12:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-12-22 05:12:42,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:12:42,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:42,039 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:42,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:42,253 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 05:12:42,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:42,254 INFO L82 PathProgramCache]: Analyzing trace with hash 690398539, now seen corresponding path program 8 times [2020-12-22 05:12:42,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:42,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666757524] [2020-12-22 05:12:42,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:42,263 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:42,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735297962] [2020-12-22 05:12:42,263 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 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 05:12:42,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:12:42,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:42,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 05:12:42,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:42,519 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 05:12:42,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666757524] [2020-12-22 05:12:42,519 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:42,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735297962] [2020-12-22 05:12:42,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:42,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:12:42,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266410096] [2020-12-22 05:12:42,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:12:42,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:42,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:12:42,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:12:42,522 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 9 states. [2020-12-22 05:12:43,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:43,277 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2020-12-22 05:12:43,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:12:43,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 05:12:43,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:43,279 INFO L225 Difference]: With dead ends: 166 [2020-12-22 05:12:43,279 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 05:12:43,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:12:43,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 05:12:43,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2020-12-22 05:12:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 05:12:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2020-12-22 05:12:43,302 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 37 [2020-12-22 05:12:43,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:43,303 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2020-12-22 05:12:43,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:12:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2020-12-22 05:12:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:12:43,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:43,304 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:43,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 05:12:43,511 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 05:12:43,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:43,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1198667980, now seen corresponding path program 2 times [2020-12-22 05:12:43,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:43,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249926462] [2020-12-22 05:12:43,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:43,521 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:43,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574922280] [2020-12-22 05:12:43,521 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 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 05:12:43,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:12:43,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:43,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-22 05:12:43,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:45,889 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~y~0))) (and (not (= c_ULTIMATE.start_main_~b~0 0)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= c_ULTIMATE.start_main_~r~0 0) (let ((.cse0 (= c_ULTIMATE.start_main_~b~0 (+ .cse1 (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~x~0))))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (<= 0 c_ULTIMATE.start_main_~b~0) (<= 1 c_ULTIMATE.start_main_~x~0) (= (+ .cse1 (* c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0)) (+ (* c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~x~0) c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~a~0)) (= c_ULTIMATE.start_main_~y~0 (+ (* 2 c_ULTIMATE.start_main_~a~0) c_ULTIMATE.start_main_~b~0)) (= (+ c_ULTIMATE.start_main_~q~0 (* 2 c_ULTIMATE.start_main_~p~0)) 0))) is different from false [2020-12-22 05:12:47,903 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~y~0))) (and (not (= c_ULTIMATE.start_main_~b~0 0)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= c_ULTIMATE.start_main_~r~0 0) (<= 0 c_ULTIMATE.start_main_~b~0) (<= 1 c_ULTIMATE.start_main_~x~0) (= (+ .cse0 (* c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0)) (+ (* c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~x~0) c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~a~0)) (= c_ULTIMATE.start_main_~b~0 (+ .cse0 (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~x~0))) (= c_ULTIMATE.start_main_~y~0 (+ (* 2 c_ULTIMATE.start_main_~a~0) c_ULTIMATE.start_main_~b~0)) (= (+ c_ULTIMATE.start_main_~q~0 (* 2 c_ULTIMATE.start_main_~p~0)) 0))) is different from false [2020-12-22 05:12:47,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249926462] [2020-12-22 05:12:47,916 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:47,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574922280] [2020-12-22 05:12:47,916 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:12:47,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:47,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:12:47,917 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:12:47,917 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:12:48,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 05:12:48,154 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:12:48,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:12:48 BoogieIcfgContainer [2020-12-22 05:12:48,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:12:48,155 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:12:48,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:12:48,156 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:12:48,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:11:57" (3/4) ... [2020-12-22 05:12:48,159 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:12:48,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:12:48,160 INFO L168 Benchmark]: Toolchain (without parser) took 51676.59 ms. Allocated memory was 161.5 MB in the beginning and 298.8 MB in the end (delta: 137.4 MB). Free memory was 135.6 MB in the beginning and 147.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 126.9 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:48,161 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 161.5 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:12:48,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.27 ms. Allocated memory is still 161.5 MB. Free memory was 135.3 MB in the beginning and 125.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:48,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.38 ms. Allocated memory is still 161.5 MB. Free memory was 125.3 MB in the beginning and 123.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:48,162 INFO L168 Benchmark]: Boogie Preprocessor took 46.18 ms. Allocated memory is still 161.5 MB. Free memory was 123.5 MB in the beginning and 122.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:48,162 INFO L168 Benchmark]: RCFGBuilder took 648.34 ms. Allocated memory is still 161.5 MB. Free memory was 122.2 MB in the beginning and 104.1 MB in the end (delta: 18.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:48,162 INFO L168 Benchmark]: TraceAbstraction took 50621.36 ms. Allocated memory was 161.5 MB in the beginning and 298.8 MB in the end (delta: 137.4 MB). Free memory was 103.9 MB in the beginning and 147.1 MB in the end (delta: -43.2 MB). Peak memory consumption was 95.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:48,163 INFO L168 Benchmark]: Witness Printer took 3.83 ms. Allocated memory is still 298.8 MB. Free memory is still 147.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:12:48,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 161.5 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 302.27 ms. Allocated memory is still 161.5 MB. Free memory was 135.3 MB in the beginning and 125.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.38 ms. Allocated memory is still 161.5 MB. Free memory was 125.3 MB in the beginning and 123.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.18 ms. Allocated memory is still 161.5 MB. Free memory was 123.5 MB in the beginning and 122.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 648.34 ms. Allocated memory is still 161.5 MB. Free memory was 122.2 MB in the beginning and 104.1 MB in the end (delta: 18.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 50621.36 ms. Allocated memory was 161.5 MB in the beginning and 298.8 MB in the end (delta: 137.4 MB). Free memory was 103.9 MB in the beginning and 147.1 MB in the end (delta: -43.2 MB). Peak memory consumption was 95.4 MB. Max. memory is 8.0 GB. * Witness Printer took 3.83 ms. Allocated memory is still 298.8 MB. Free memory is still 147.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: 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: [L19] long long a, b, p, q, r, s; [L20] int x, y; [L21] x = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND FALSE !(a > b) [L48] b = b - a [L49] q = q - p [L50] s = s - r [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND FALSE !(a > b) [L48] b = b - a [L49] q = q - p [L50] s = s - r [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND TRUE a > b [L44] a = a - b [L45] p = p - q [L46] r = r - s [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 50.5s, OverallIterations: 22, TraceHistogramMax: 4, AutomataDifference: 30.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 701 SDtfs, 1993 SDslu, 2167 SDs, 0 SdLazy, 3248 SolverSat, 400 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 8.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 26.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 21 MinimizatonAttempts, 333 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 577 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 556 ConstructedInterpolants, 4 QuantifiedInterpolants, 232045 SizeOfPredicates, 218 NumberOfNonLiveVariables, 2350 ConjunctsInSsa, 655 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 19/288 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...