/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 21:42:57,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 21:42:57,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 21:42:57,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 21:42:57,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 21:42:57,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 21:42:57,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 21:42:57,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 21:42:57,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 21:42:57,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 21:42:57,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 21:42:57,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 21:42:57,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 21:42:57,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 21:42:57,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 21:42:57,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 21:42:57,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 21:42:57,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 21:42:57,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 21:42:57,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 21:42:57,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 21:42:57,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 21:42:57,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 21:42:57,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 21:42:57,460 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 21:42:57,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 21:42:57,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 21:42:57,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 21:42:57,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 21:42:57,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 21:42:57,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 21:42:57,461 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 21:42:57,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 21:42:57,462 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 21:42:57,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 21:42:57,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 21:42:57,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 21:42:57,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 21:42:57,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 21:42:57,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 21:42:57,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 21:42:57,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 21:42:57,465 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 21:42:57,465 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 21:42:57,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 21:42:57,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 21:42:57,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 21:42:57,827 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 21:42:57,832 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 21:42:57,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound5.c [2021-05-02 21:42:57,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1a8aa92/460a0120c4b84207981963d16e56d63f/FLAGfdf291514 [2021-05-02 21:42:58,307 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 21:42:58,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound5.c [2021-05-02 21:42:58,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1a8aa92/460a0120c4b84207981963d16e56d63f/FLAGfdf291514 [2021-05-02 21:42:58,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1a8aa92/460a0120c4b84207981963d16e56d63f [2021-05-02 21:42:58,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 21:42:58,736 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 21:42:58,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 21:42:58,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 21:42:58,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 21:42:58,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 09:42:58" (1/1) ... [2021-05-02 21:42:58,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20841ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:58, skipping insertion in model container [2021-05-02 21:42:58,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 09:42:58" (1/1) ... [2021-05-02 21:42:58,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 21:42:58,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 21:42:58,867 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound5.c[524,537] [2021-05-02 21:42:58,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 21:42:58,889 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 21:42:58,899 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound5.c[524,537] [2021-05-02 21:42:58,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 21:42:58,918 INFO L208 MainTranslator]: Completed translation [2021-05-02 21:42:58,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:58 WrapperNode [2021-05-02 21:42:58,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 21:42:58,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 21:42:58,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 21:42:58,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 21:42:58,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:58" (1/1) ... [2021-05-02 21:42:58,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:58" (1/1) ... [2021-05-02 21:42:58,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:58" (1/1) ... [2021-05-02 21:42:58,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:58" (1/1) ... [2021-05-02 21:42:58,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:58" (1/1) ... [2021-05-02 21:42:58,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:58" (1/1) ... [2021-05-02 21:42:58,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:58" (1/1) ... [2021-05-02 21:42:58,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 21:42:58,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 21:42:58,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 21:42:58,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 21:42:58,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 21:42:59,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 21:42:59,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 21:42:59,088 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 21:42:59,088 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 21:42:59,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 21:42:59,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 21:42:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 21:42:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 21:42:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 21:42:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 21:42:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 21:42:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 21:42:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 21:42:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 21:42:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 21:42:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 21:42:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 21:42:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 21:42:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 21:42:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 21:42:59,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 21:42:59,370 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 21:42:59,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:42:59 BoogieIcfgContainer [2021-05-02 21:42:59,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 21:42:59,372 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 21:42:59,372 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 21:42:59,372 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 21:42:59,375 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:42:59" (1/1) ... [2021-05-02 21:42:59,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 09:42:59 BasicIcfg [2021-05-02 21:42:59,389 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 21:42:59,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 21:42:59,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 21:42:59,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 21:42:59,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 09:42:58" (1/4) ... [2021-05-02 21:42:59,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e34808b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 09:42:59, skipping insertion in model container [2021-05-02 21:42:59,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:58" (2/4) ... [2021-05-02 21:42:59,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e34808b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 09:42:59, skipping insertion in model container [2021-05-02 21:42:59,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:42:59" (3/4) ... [2021-05-02 21:42:59,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e34808b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 09:42:59, skipping insertion in model container [2021-05-02 21:42:59,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 09:42:59" (4/4) ... [2021-05-02 21:42:59,396 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound5.cJordan [2021-05-02 21:42:59,400 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 21:42:59,403 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 21:42:59,417 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 21:42:59,433 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 21:42:59,433 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 21:42:59,433 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 21:42:59,433 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 21:42:59,433 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 21:42:59,433 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 21:42:59,433 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 21:42:59,433 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 21:42:59,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:42:59,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 21:42:59,450 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:42:59,450 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:42:59,450 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:42:59,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:42:59,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1119019339, now seen corresponding path program 1 times [2021-05-02 21:42:59,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:42:59,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410290133] [2021-05-02 21:42:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:42:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:42:59,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 21:42:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:42:59,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 21:42:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:42:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:42:59,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:42:59,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410290133] [2021-05-02 21:42:59,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410290133] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:42:59,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:42:59,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 21:42:59,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609775962] [2021-05-02 21:42:59,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 21:42:59,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:42:59,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 21:42:59,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 21:42:59,725 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:42:59,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:42:59,833 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-05-02 21:42:59,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 21:42:59,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-02 21:42:59,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:42:59,844 INFO L225 Difference]: With dead ends: 33 [2021-05-02 21:42:59,844 INFO L226 Difference]: Without dead ends: 28 [2021-05-02 21:42:59,845 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 21:42:59,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-02 21:42:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-05-02 21:42:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:42:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-05-02 21:42:59,878 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2021-05-02 21:42:59,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:42:59,878 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-05-02 21:42:59,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:42:59,879 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-05-02 21:42:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 21:42:59,879 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:42:59,880 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:42:59,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 21:42:59,880 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:42:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:42:59,882 INFO L82 PathProgramCache]: Analyzing trace with hash -496973861, now seen corresponding path program 1 times [2021-05-02 21:42:59,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:42:59,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118016236] [2021-05-02 21:42:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:42:59,918 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:42:59,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841798715] [2021-05-02 21:42:59,919 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 [2021-05-02 21:43:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:00,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 21:43:00,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:00,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:00,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:00,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:00,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:00,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:00,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:00,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118016236] [2021-05-02 21:43:00,124 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:00,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841798715] [2021-05-02 21:43:00,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841798715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:43:00,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:43:00,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 21:43:00,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558352435] [2021-05-02 21:43:00,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 21:43:00,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:00,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 21:43:00,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 21:43:00,127 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 21:43:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:00,145 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-05-02 21:43:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 21:43:00,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-05-02 21:43:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:00,146 INFO L225 Difference]: With dead ends: 29 [2021-05-02 21:43:00,146 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 21:43:00,147 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 21:43:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 21:43:00,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 21:43:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:43:00,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-05-02 21:43:00,151 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2021-05-02 21:43:00,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:00,151 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-05-02 21:43:00,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 21:43:00,151 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-05-02 21:43:00,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 21:43:00,151 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:00,151 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:00,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 21:43:00,352 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:00,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:00,353 INFO L82 PathProgramCache]: Analyzing trace with hash -495871594, now seen corresponding path program 1 times [2021-05-02 21:43:00,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:00,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951759434] [2021-05-02 21:43:00,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:00,369 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:00,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339422628] [2021-05-02 21:43:00,370 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 [2021-05-02 21:43:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:00,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 21:43:00,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:00,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:00,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:00,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:00,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951759434] [2021-05-02 21:43:00,573 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:00,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339422628] [2021-05-02 21:43:00,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339422628] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:43:00,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:43:00,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 21:43:00,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614456114] [2021-05-02 21:43:00,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 21:43:00,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:00,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 21:43:00,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 21:43:00,578 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:43:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:00,703 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-05-02 21:43:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 21:43:00,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-02 21:43:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:00,707 INFO L225 Difference]: With dead ends: 40 [2021-05-02 21:43:00,707 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 21:43:00,708 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 21:43:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 21:43:00,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2021-05-02 21:43:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 21:43:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-05-02 21:43:00,723 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2021-05-02 21:43:00,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:00,723 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-05-02 21:43:00,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:43:00,723 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-05-02 21:43:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-02 21:43:00,724 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:00,725 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:00,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:00,933 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:00,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:00,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1025358414, now seen corresponding path program 1 times [2021-05-02 21:43:00,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:00,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771231956] [2021-05-02 21:43:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:00,947 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:00,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720766581] [2021-05-02 21:43:00,948 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 [2021-05-02 21:43:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:00,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 21:43:00,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:01,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:01,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:01,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771231956] [2021-05-02 21:43:01,374 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:01,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720766581] [2021-05-02 21:43:01,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720766581] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:01,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:01,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 21:43:01,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419502454] [2021-05-02 21:43:01,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 21:43:01,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:01,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 21:43:01,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-05-02 21:43:01,376 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:01,792 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2021-05-02 21:43:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 21:43:01,793 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-05-02 21:43:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:01,795 INFO L225 Difference]: With dead ends: 49 [2021-05-02 21:43:01,795 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 21:43:01,795 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 289.1ms TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-05-02 21:43:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 21:43:01,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-05-02 21:43:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 29 states have internal predecessors, (36), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:43:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2021-05-02 21:43:01,800 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 24 [2021-05-02 21:43:01,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:01,800 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2021-05-02 21:43:01,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:01,801 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2021-05-02 21:43:01,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 21:43:01,801 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:01,802 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:02,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:02,018 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:02,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:02,018 INFO L82 PathProgramCache]: Analyzing trace with hash -2117889998, now seen corresponding path program 1 times [2021-05-02 21:43:02,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:02,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969854422] [2021-05-02 21:43:02,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:02,040 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:02,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431910459] [2021-05-02 21:43:02,041 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 [2021-05-02 21:43:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:02,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 21:43:02,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:02,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:02,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:02,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969854422] [2021-05-02 21:43:02,214 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:02,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431910459] [2021-05-02 21:43:02,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431910459] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:02,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:02,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 21:43:02,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833019086] [2021-05-02 21:43:02,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 21:43:02,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:02,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 21:43:02,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 21:43:02,229 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 21:43:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:02,259 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-05-02 21:43:02,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 21:43:02,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2021-05-02 21:43:02,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:02,261 INFO L225 Difference]: With dead ends: 48 [2021-05-02 21:43:02,262 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 21:43:02,262 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 21:43:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 21:43:02,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 21:43:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:43:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2021-05-02 21:43:02,267 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 27 [2021-05-02 21:43:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:02,267 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2021-05-02 21:43:02,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 21:43:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2021-05-02 21:43:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 21:43:02,268 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:02,268 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:02,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:02,483 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:02,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:02,484 INFO L82 PathProgramCache]: Analyzing trace with hash -2116787731, now seen corresponding path program 1 times [2021-05-02 21:43:02,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:02,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260985202] [2021-05-02 21:43:02,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:02,497 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:02,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797430767] [2021-05-02 21:43:02,497 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 [2021-05-02 21:43:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:02,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 21:43:02,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:02,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:02,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:02,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260985202] [2021-05-02 21:43:02,858 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:02,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797430767] [2021-05-02 21:43:02,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797430767] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:02,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:02,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:43:02,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345477525] [2021-05-02 21:43:02,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:43:02,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:02,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:43:02,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:43:02,861 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:07,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:07,404 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2021-05-02 21:43:07,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:43:07,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2021-05-02 21:43:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:07,405 INFO L225 Difference]: With dead ends: 61 [2021-05-02 21:43:07,406 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 21:43:07,406 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:43:07,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 21:43:07,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2021-05-02 21:43:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 40 states have (on average 1.3) internal successors, (52), 42 states have internal predecessors, (52), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 21:43:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2021-05-02 21:43:07,411 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 27 [2021-05-02 21:43:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:07,411 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2021-05-02 21:43:07,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2021-05-02 21:43:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 21:43:07,412 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:07,412 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:07,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:07,629 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:07,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:07,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1857795251, now seen corresponding path program 1 times [2021-05-02 21:43:07,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:07,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976979458] [2021-05-02 21:43:07,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:07,651 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:07,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379051091] [2021-05-02 21:43:07,651 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 [2021-05-02 21:43:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:07,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 21:43:07,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:07,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:07,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:07,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:07,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:07,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:07,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976979458] [2021-05-02 21:43:07,939 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:07,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379051091] [2021-05-02 21:43:07,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379051091] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:07,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:07,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:43:07,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553477384] [2021-05-02 21:43:07,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:43:07,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:07,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:43:07,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:43:07,942 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:12,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:12,276 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2021-05-02 21:43:12,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:43:12,277 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-05-02 21:43:12,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:12,278 INFO L225 Difference]: With dead ends: 64 [2021-05-02 21:43:12,278 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 21:43:12,278 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 157.2ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:43:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 21:43:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 21:43:12,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.297872340425532) internal successors, (61), 49 states have internal predecessors, (61), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 21:43:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2021-05-02 21:43:12,284 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 28 [2021-05-02 21:43:12,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:12,284 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2021-05-02 21:43:12,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2021-05-02 21:43:12,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 21:43:12,285 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:12,285 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:12,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:12,486 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:12,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2004143825, now seen corresponding path program 1 times [2021-05-02 21:43:12,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:12,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844526765] [2021-05-02 21:43:12,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:12,494 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:12,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725741345] [2021-05-02 21:43:12,495 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 [2021-05-02 21:43:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:12,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 21:43:12,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:12,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:12,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:12,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:12,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:12,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:12,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844526765] [2021-05-02 21:43:12,757 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:12,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725741345] [2021-05-02 21:43:12,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725741345] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:12,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:12,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:43:12,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446421520] [2021-05-02 21:43:12,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:43:12,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:12,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:43:12,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:43:12,761 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:17,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:17,252 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2021-05-02 21:43:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:43:17,253 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-02 21:43:17,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:17,254 INFO L225 Difference]: With dead ends: 77 [2021-05-02 21:43:17,254 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 21:43:17,254 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 136.6ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:43:17,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 21:43:17,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2021-05-02 21:43:17,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.290909090909091) internal successors, (71), 57 states have internal predecessors, (71), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 21:43:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2021-05-02 21:43:17,260 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 29 [2021-05-02 21:43:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:17,260 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2021-05-02 21:43:17,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2021-05-02 21:43:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 21:43:17,261 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:17,261 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:17,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:17,465 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:17,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1116640144, now seen corresponding path program 1 times [2021-05-02 21:43:17,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:17,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988638880] [2021-05-02 21:43:17,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:17,473 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:17,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589693422] [2021-05-02 21:43:17,474 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 [2021-05-02 21:43:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:17,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 21:43:17,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:17,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:17,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:17,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:17,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:17,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:17,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988638880] [2021-05-02 21:43:17,716 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:17,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589693422] [2021-05-02 21:43:17,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589693422] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:17,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:17,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 21:43:17,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608381484] [2021-05-02 21:43:17,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 21:43:17,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:17,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 21:43:17,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 21:43:17,717 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:17,912 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2021-05-02 21:43:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 21:43:17,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-02 21:43:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:17,913 INFO L225 Difference]: With dead ends: 85 [2021-05-02 21:43:17,913 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 21:43:17,914 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 92.1ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:43:17,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 21:43:17,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2021-05-02 21:43:17,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 55 states have internal predecessors, (69), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 21:43:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2021-05-02 21:43:17,921 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 29 [2021-05-02 21:43:17,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:17,921 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2021-05-02 21:43:17,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:17,922 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2021-05-02 21:43:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 21:43:17,922 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:17,922 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:18,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 21:43:18,129 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:18,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:18,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1454559031, now seen corresponding path program 1 times [2021-05-02 21:43:18,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:18,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462714275] [2021-05-02 21:43:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:18,137 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:18,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234393316] [2021-05-02 21:43:18,137 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 [2021-05-02 21:43:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:18,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 21:43:18,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:18,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:43:18,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:18,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462714275] [2021-05-02 21:43:18,300 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:18,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234393316] [2021-05-02 21:43:18,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234393316] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:43:18,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:43:18,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 21:43:18,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025154063] [2021-05-02 21:43:18,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 21:43:18,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:18,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 21:43:18,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 21:43:18,302 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:43:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:18,414 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2021-05-02 21:43:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 21:43:18,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-05-02 21:43:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:18,415 INFO L225 Difference]: With dead ends: 90 [2021-05-02 21:43:18,415 INFO L226 Difference]: Without dead ends: 90 [2021-05-02 21:43:18,416 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-02 21:43:18,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-02 21:43:18,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2021-05-02 21:43:18,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 66 states have internal predecessors, (84), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 21:43:18,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2021-05-02 21:43:18,422 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 33 [2021-05-02 21:43:18,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:18,422 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2021-05-02 21:43:18,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:43:18,422 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2021-05-02 21:43:18,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 21:43:18,423 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:18,423 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:18,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:18,637 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:18,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:18,637 INFO L82 PathProgramCache]: Analyzing trace with hash 482870923, now seen corresponding path program 1 times [2021-05-02 21:43:18,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:18,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910384994] [2021-05-02 21:43:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:18,646 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:18,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528629544] [2021-05-02 21:43:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:18,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 21:43:18,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:18,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 21:43:19,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:19,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910384994] [2021-05-02 21:43:19,211 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:19,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528629544] [2021-05-02 21:43:19,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528629544] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:19,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:19,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 21:43:19,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595728806] [2021-05-02 21:43:19,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 21:43:19,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:19,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 21:43:19,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:43:19,213 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:43:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:21,580 INFO L93 Difference]: Finished difference Result 101 states and 135 transitions. [2021-05-02 21:43:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 21:43:21,580 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2021-05-02 21:43:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:21,581 INFO L225 Difference]: With dead ends: 101 [2021-05-02 21:43:21,581 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 21:43:21,581 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 352.3ms TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-05-02 21:43:21,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 21:43:21,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2021-05-02 21:43:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 73 states have internal predecessors, (92), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 21:43:21,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2021-05-02 21:43:21,587 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 35 [2021-05-02 21:43:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:21,587 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2021-05-02 21:43:21,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:43:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2021-05-02 21:43:21,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 21:43:21,588 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:21,588 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:21,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 21:43:21,797 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:21,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:21,797 INFO L82 PathProgramCache]: Analyzing trace with hash 189467916, now seen corresponding path program 1 times [2021-05-02 21:43:21,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:21,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634745851] [2021-05-02 21:43:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:21,803 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:21,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502166164] [2021-05-02 21:43:21,803 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 [2021-05-02 21:43:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:21,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 21:43:21,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:21,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:21,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:21,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:21,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:21,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:21,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:21,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:21,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:21,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:21,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:22,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:22,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:22,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:22,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:22,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:22,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:22,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 21:43:22,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:22,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634745851] [2021-05-02 21:43:22,206 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:22,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502166164] [2021-05-02 21:43:22,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502166164] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:22,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:22,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 21:43:22,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793126313] [2021-05-02 21:43:22,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 21:43:22,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:22,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 21:43:22,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-05-02 21:43:22,208 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:43:23,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:23,240 INFO L93 Difference]: Finished difference Result 121 states and 161 transitions. [2021-05-02 21:43:23,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 21:43:23,240 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2021-05-02 21:43:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:23,241 INFO L225 Difference]: With dead ends: 121 [2021-05-02 21:43:23,241 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 21:43:23,242 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 545.0ms TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-05-02 21:43:23,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 21:43:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 101. [2021-05-02 21:43:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 79 states have internal predecessors, (101), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 21:43:23,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2021-05-02 21:43:23,264 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 35 [2021-05-02 21:43:23,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:23,264 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2021-05-02 21:43:23,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:43:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2021-05-02 21:43:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 21:43:23,265 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:23,265 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:23,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 21:43:23,466 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:23,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:23,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1979136443, now seen corresponding path program 2 times [2021-05-02 21:43:23,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:23,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79039081] [2021-05-02 21:43:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:23,471 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:23,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075267786] [2021-05-02 21:43:23,471 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 [2021-05-02 21:43:23,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:43:23,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:43:23,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 21:43:23,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:23,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:23,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:23,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:23,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:23,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:23,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:23,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:23,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:23,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:23,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:23,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:23,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:23,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79039081] [2021-05-02 21:43:23,609 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:23,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075267786] [2021-05-02 21:43:23,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075267786] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:23,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:23,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 21:43:23,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338006028] [2021-05-02 21:43:23,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 21:43:23,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:23,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 21:43:23,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 21:43:23,611 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:43:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:23,659 INFO L93 Difference]: Finished difference Result 120 states and 157 transitions. [2021-05-02 21:43:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 21:43:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2021-05-02 21:43:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:23,661 INFO L225 Difference]: With dead ends: 120 [2021-05-02 21:43:23,661 INFO L226 Difference]: Without dead ends: 120 [2021-05-02 21:43:23,661 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 21:43:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-02 21:43:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-02 21:43:23,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.3297872340425532) internal successors, (125), 96 states have internal predecessors, (125), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 21:43:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-05-02 21:43:23,667 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 36 [2021-05-02 21:43:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:23,667 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-05-02 21:43:23,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:43:23,668 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-05-02 21:43:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 21:43:23,668 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:23,668 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:23,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:23,891 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:23,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:23,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1980238710, now seen corresponding path program 2 times [2021-05-02 21:43:23,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:23,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868754208] [2021-05-02 21:43:23,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:23,896 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:23,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138890572] [2021-05-02 21:43:23,896 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 [2021-05-02 21:43:23,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:43:23,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:43:23,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 21:43:23,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:23,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:23,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:24,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:24,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:24,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:24,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:38,711 WARN L205 SmtUtils]: Spent 12.52 s on a formula simplification that was a NOOP. DAG size: 26 [2021-05-02 21:43:52,875 WARN L205 SmtUtils]: Spent 14.12 s on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2021-05-02 21:43:52,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:52,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:52,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:52,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:52,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:52,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:53,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:54,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:54,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:54,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:54,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:54,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:54,839 WARN L159 QuantifierPusher]: Ignoring assumption.