/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/ps3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:51:39,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:51:39,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:51:39,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:51:39,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:51:39,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:51:39,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:51:39,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:51:39,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:51:39,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:51:39,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:51:39,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:51:39,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:51:39,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:51:39,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:51:39,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:51:39,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:51:39,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:51:39,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:51:39,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:51:39,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:51:39,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:51:39,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:51:39,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:51:39,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:51:39,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:51:39,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:51:39,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:51:39,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 23:51:39,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:51:39,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:51:39,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:51:39,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:51:39,769 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:51:39,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:51:39,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:51:39,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:51:39,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:51:39,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:51:39,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:51:39,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:51:39,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:51:39,771 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:51:39,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:51:39,771 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:51:39,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:51:39,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:51:39,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:51:39,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:51:39,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:51:39,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:51:39,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:51:39,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:51:39,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:51:39,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:51:39,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:51:39,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:51:39,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:51:39,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:51:40,075 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:51:40,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:51:40,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:51:40,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:51:40,098 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:51:40,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps3.c [2020-07-19 23:51:40,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e407ac00a/d5d74112bbac4abc8931cf28fd3e9261/FLAGd9cd569a8 [2020-07-19 23:51:40,706 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:51:40,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps3.c [2020-07-19 23:51:40,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e407ac00a/d5d74112bbac4abc8931cf28fd3e9261/FLAGd9cd569a8 [2020-07-19 23:51:41,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e407ac00a/d5d74112bbac4abc8931cf28fd3e9261 [2020-07-19 23:51:41,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:51:41,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:51:41,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:51:41,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:51:41,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:51:41,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:51:41" (1/1) ... [2020-07-19 23:51:41,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dbef47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:41, skipping insertion in model container [2020-07-19 23:51:41,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:51:41" (1/1) ... [2020-07-19 23:51:41,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:51:41,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:51:41,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:51:41,319 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:51:41,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:51:41,359 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:51:41,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:41 WrapperNode [2020-07-19 23:51:41,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:51:41,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:51:41,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:51:41,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:51:41,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:41" (1/1) ... [2020-07-19 23:51:41,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:41" (1/1) ... [2020-07-19 23:51:41,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:41" (1/1) ... [2020-07-19 23:51:41,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:41" (1/1) ... [2020-07-19 23:51:41,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:41" (1/1) ... [2020-07-19 23:51:41,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:41" (1/1) ... [2020-07-19 23:51:41,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:41" (1/1) ... [2020-07-19 23:51:41,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:51:41,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:51:41,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:51:41,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:51:41,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:41" (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 [2020-07-19 23:51:41,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:51:41,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:51:41,540 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 23:51:41,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:51:41,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:51:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:51:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:51:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:51:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 23:51:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:51:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:51:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:51:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:51:41,746 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:51:41,746 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 23:51:41,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:51:41 BoogieIcfgContainer [2020-07-19 23:51:41,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:51:41,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:51:41,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:51:41,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:51:41,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:51:41" (1/3) ... [2020-07-19 23:51:41,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adfd4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:51:41, skipping insertion in model container [2020-07-19 23:51:41,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:41" (2/3) ... [2020-07-19 23:51:41,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adfd4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:51:41, skipping insertion in model container [2020-07-19 23:51:41,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:51:41" (3/3) ... [2020-07-19 23:51:41,757 INFO L109 eAbstractionObserver]: Analyzing ICFG ps3.c [2020-07-19 23:51:41,766 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:51:41,775 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:51:41,790 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:51:41,816 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:51:41,816 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:51:41,816 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:51:41,817 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:51:41,817 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:51:41,817 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:51:41,817 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:51:41,817 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:51:41,835 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-19 23:51:41,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 23:51:41,842 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:41,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:41,844 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:41,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:41,850 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-07-19 23:51:41,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:41,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858295236] [2020-07-19 23:51:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52488b06 [2020-07-19 23:51:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:51:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:51:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:51:41,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858295236] [2020-07-19 23:51:41,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:51:41,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-19 23:51:41,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443655527] [2020-07-19 23:51:41,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-19 23:51:41,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:41,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-19 23:51:41,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 23:51:42,000 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-19 23:51:42,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:42,028 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-07-19 23:51:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-19 23:51:42,030 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-19 23:51:42,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:42,040 INFO L225 Difference]: With dead ends: 35 [2020-07-19 23:51:42,041 INFO L226 Difference]: Without dead ends: 15 [2020-07-19 23:51:42,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 23:51:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-19 23:51:42,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-19 23:51:42,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-19 23:51:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-19 23:51:42,092 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-07-19 23:51:42,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:42,092 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-19 23:51:42,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-19 23:51:42,094 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-19 23:51:42,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 23:51:42,095 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:42,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:42,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:51:42,096 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:42,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:42,096 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-07-19 23:51:42,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:42,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548782946] [2020-07-19 23:51:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52488b06 [2020-07-19 23:51:42,106 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:42,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115774445] [2020-07-19 23:51:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1287c62 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:42,162 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1287c62 issued 3 check-sat command(s) [2020-07-19 23:51:42,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:42,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-19 23:51:42,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:51:42,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548782946] [2020-07-19 23:51:42,312 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:42,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115774445] [2020-07-19 23:51:42,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:51:42,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:51:42,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726943743] [2020-07-19 23:51:42,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:51:42,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:42,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:51:42,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:51:42,326 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-19 23:51:42,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:42,405 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-07-19 23:51:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:51:42,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-19 23:51:42,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:42,406 INFO L225 Difference]: With dead ends: 25 [2020-07-19 23:51:42,407 INFO L226 Difference]: Without dead ends: 22 [2020-07-19 23:51:42,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:51:42,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-19 23:51:42,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-19 23:51:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-19 23:51:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-19 23:51:42,417 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-19 23:51:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:42,418 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-19 23:51:42,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:51:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-19 23:51:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 23:51:42,419 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:42,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:42,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-19 23:51:42,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:42,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:42,636 INFO L82 PathProgramCache]: Analyzing trace with hash 50868238, now seen corresponding path program 1 times [2020-07-19 23:51:42,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:42,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436521988] [2020-07-19 23:51:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52488b06 [2020-07-19 23:51:42,644 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:42,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160574920] [2020-07-19 23:51:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c7c9cb0 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 [2020-07-19 23:51:42,706 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c7c9cb0 issued 4 check-sat command(s) [2020-07-19 23:51:42,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:42,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-19 23:51:42,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:51:42,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436521988] [2020-07-19 23:51:42,775 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:42,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160574920] [2020-07-19 23:51:42,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:51:42,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-19 23:51:42,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399119074] [2020-07-19 23:51:42,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:51:42,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:42,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:51:42,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:51:42,778 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-07-19 23:51:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:42,841 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-07-19 23:51:42,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:51:42,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-19 23:51:42,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:42,843 INFO L225 Difference]: With dead ends: 32 [2020-07-19 23:51:42,843 INFO L226 Difference]: Without dead ends: 29 [2020-07-19 23:51:42,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-19 23:51:42,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-19 23:51:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-19 23:51:42,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-19 23:51:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-19 23:51:42,852 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-07-19 23:51:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:42,853 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-19 23:51:42,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:51:42,853 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-19 23:51:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 23:51:42,854 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:42,854 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:43,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:43,061 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:43,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1538749201, now seen corresponding path program 2 times [2020-07-19 23:51:43,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:43,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106272445] [2020-07-19 23:51:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52488b06 [2020-07-19 23:51:43,068 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:43,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145284633] [2020-07-19 23:51:43,069 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@fd5602 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:43,146 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@fd5602 issued 4 check-sat command(s) [2020-07-19 23:51:43,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:43,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-19 23:51:43,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-19 23:51:43,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106272445] [2020-07-19 23:51:43,297 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:43,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145284633] [2020-07-19 23:51:43,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:51:43,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-19 23:51:43,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18217643] [2020-07-19 23:51:43,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 23:51:43,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:43,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 23:51:43,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:51:43,300 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 9 states. [2020-07-19 23:51:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:43,491 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-07-19 23:51:43,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 23:51:43,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-07-19 23:51:43,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:43,494 INFO L225 Difference]: With dead ends: 39 [2020-07-19 23:51:43,494 INFO L226 Difference]: Without dead ends: 36 [2020-07-19 23:51:43,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-07-19 23:51:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-19 23:51:43,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-19 23:51:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-19 23:51:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-07-19 23:51:43,513 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2020-07-19 23:51:43,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:43,514 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-07-19 23:51:43,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 23:51:43,515 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-07-19 23:51:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-19 23:51:43,517 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:43,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:43,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:43,733 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:43,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:43,734 INFO L82 PathProgramCache]: Analyzing trace with hash -695576914, now seen corresponding path program 3 times [2020-07-19 23:51:43,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:43,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39629724] [2020-07-19 23:51:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52488b06 [2020-07-19 23:51:43,742 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:43,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927596909] [2020-07-19 23:51:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2bfac54a 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 [2020-07-19 23:51:43,850 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2bfac54a issued 4 check-sat command(s) [2020-07-19 23:51:43,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:43,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-19 23:51:43,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-19 23:51:43,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39629724] [2020-07-19 23:51:43,983 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:43,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927596909] [2020-07-19 23:51:43,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:51:43,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-19 23:51:43,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353821379] [2020-07-19 23:51:43,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-19 23:51:43,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:43,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-19 23:51:43,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-07-19 23:51:43,986 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 10 states. [2020-07-19 23:51:44,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:44,222 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-07-19 23:51:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 23:51:44,223 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-07-19 23:51:44,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:44,225 INFO L225 Difference]: With dead ends: 46 [2020-07-19 23:51:44,225 INFO L226 Difference]: Without dead ends: 43 [2020-07-19 23:51:44,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-19 23:51:44,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-19 23:51:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-19 23:51:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-19 23:51:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-07-19 23:51:44,236 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 31 [2020-07-19 23:51:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:44,236 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-07-19 23:51:44,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-19 23:51:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-07-19 23:51:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-19 23:51:44,238 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:44,238 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:44,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:44,447 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:44,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1264228465, now seen corresponding path program 4 times [2020-07-19 23:51:44,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:44,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686282350] [2020-07-19 23:51:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52488b06 [2020-07-19 23:51:44,456 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:44,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198931745] [2020-07-19 23:51:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7fe2725f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:44,641 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7fe2725f issued 4 check-sat command(s) [2020-07-19 23:51:44,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:44,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-19 23:51:44,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-19 23:51:44,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686282350] [2020-07-19 23:51:44,870 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:44,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198931745] [2020-07-19 23:51:44,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:51:44,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-07-19 23:51:44,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849851916] [2020-07-19 23:51:44,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-19 23:51:44,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:44,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-19 23:51:44,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-07-19 23:51:44,872 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 12 states. [2020-07-19 23:51:45,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:45,140 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-07-19 23:51:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 23:51:45,147 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-07-19 23:51:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:45,148 INFO L225 Difference]: With dead ends: 53 [2020-07-19 23:51:45,148 INFO L226 Difference]: Without dead ends: 50 [2020-07-19 23:51:45,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-07-19 23:51:45,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-19 23:51:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-19 23:51:45,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-19 23:51:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-07-19 23:51:45,174 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 38 [2020-07-19 23:51:45,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:45,174 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-07-19 23:51:45,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-19 23:51:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-07-19 23:51:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-19 23:51:45,178 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:45,179 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:45,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-19 23:51:45,380 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:45,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:45,381 INFO L82 PathProgramCache]: Analyzing trace with hash 427058510, now seen corresponding path program 5 times [2020-07-19 23:51:45,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:45,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248261704] [2020-07-19 23:51:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52488b06 [2020-07-19 23:51:45,390 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:45,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111250920] [2020-07-19 23:51:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1f6f2e77 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 [2020-07-19 23:51:45,612 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1f6f2e77 issued 4 check-sat command(s) [2020-07-19 23:51:45,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:45,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-19 23:51:45,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 42 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-07-19 23:51:45,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248261704] [2020-07-19 23:51:45,876 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:45,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111250920] [2020-07-19 23:51:45,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:51:45,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-07-19 23:51:45,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777654974] [2020-07-19 23:51:45,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-19 23:51:45,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:45,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-19 23:51:45,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-07-19 23:51:45,878 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 14 states. [2020-07-19 23:51:48,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:48,408 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-07-19 23:51:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-19 23:51:48,408 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-07-19 23:51:48,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:48,412 INFO L225 Difference]: With dead ends: 60 [2020-07-19 23:51:48,413 INFO L226 Difference]: Without dead ends: 57 [2020-07-19 23:51:48,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-07-19 23:51:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-19 23:51:48,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-19 23:51:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-19 23:51:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-07-19 23:51:48,430 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 45 [2020-07-19 23:51:48,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:48,431 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-07-19 23:51:48,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-19 23:51:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-07-19 23:51:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-19 23:51:48,432 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:48,433 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:48,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:48,635 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:48,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:48,636 INFO L82 PathProgramCache]: Analyzing trace with hash 174118353, now seen corresponding path program 6 times [2020-07-19 23:51:48,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:48,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230612632] [2020-07-19 23:51:48,637 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52488b06 [2020-07-19 23:51:48,642 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:48,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570829059] [2020-07-19 23:51:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40e0f589 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